diff options
Diffstat (limited to 'fs')
196 files changed, 9164 insertions, 3354 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 5594505..b401337 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -831,7 +831,6 @@ static const struct vm_operations_struct v9fs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = v9fs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static const struct vm_operations_struct v9fs_mmap_file_vm_ops = { @@ -839,7 +838,6 @@ static const struct vm_operations_struct v9fs_mmap_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = v9fs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; @@ -165,6 +165,7 @@ config HUGETLB_PAGE def_bool HUGETLBFS source "fs/configfs/Kconfig" +source "fs/efivarfs/Kconfig" endmenu @@ -209,7 +210,6 @@ source "fs/sysv/Kconfig" source "fs/ufs/Kconfig" source "fs/exofs/Kconfig" source "fs/f2fs/Kconfig" -source "fs/efivarfs/Kconfig" endif # MISC_FILESYSTEMS diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 06e14bf..dbc732e 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -306,8 +306,8 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg, _debug("- range %u-%u%s", offset, to, msg->msg_flags ? " [more]" : ""); - iov_iter_init(&msg->msg_iter, WRITE, - (struct iovec *) iov, 1, to - offset); + iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC, + iov, 1, to - offset); /* have to change the state *before* sending the last * packet as RxRPC might give us the reply before it @@ -384,7 +384,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, msg.msg_name = NULL; msg.msg_namelen = 0; - iov_iter_init(&msg.msg_iter, WRITE, (struct iovec *)iov, 1, + iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, iov, 1, call->request_size); msg.msg_control = NULL; msg.msg_controllen = 0; @@ -770,7 +770,7 @@ static int afs_deliver_cm_op_id(struct afs_call *call, struct sk_buff *skb, void afs_send_empty_reply(struct afs_call *call) { struct msghdr msg; - struct iovec iov[1]; + struct kvec iov[1]; _enter(""); @@ -778,7 +778,7 @@ void afs_send_empty_reply(struct afs_call *call) iov[0].iov_len = 0; msg.msg_name = NULL; msg.msg_namelen = 0; - iov_iter_init(&msg.msg_iter, WRITE, iov, 0, 0); /* WTF? */ + iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, iov, 0, 0); /* WTF? */ msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_flags = 0; @@ -805,7 +805,7 @@ void afs_send_empty_reply(struct afs_call *call) void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) { struct msghdr msg; - struct iovec iov[1]; + struct kvec iov[1]; int n; _enter(""); @@ -814,7 +814,7 @@ void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) iov[0].iov_len = len; msg.msg_name = NULL; msg.msg_namelen = 0; - iov_iter_init(&msg.msg_iter, WRITE, iov, 1, len); + iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, iov, 1, len); msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_flags = 0; @@ -1127,6 +1127,13 @@ static long aio_read_events_ring(struct kioctx *ctx, long ret = 0; int copy_ret; + /* + * The mutex can block and wake us up and that will cause + * wait_event_interruptible_hrtimeout() to schedule without sleeping + * and repeat. This should be rare enough that it doesn't cause + * peformance issues. See the comment in read_events() for more detail. + */ + sched_annotate_sleep(); mutex_lock(&ctx->ring_lock); /* Access to ->ring_pages here is protected by ctx->ring_lock. */ diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig index a66768e..80e9c18 100644 --- a/fs/btrfs/Kconfig +++ b/fs/btrfs/Kconfig @@ -8,6 +8,7 @@ config BTRFS_FS select LZO_DECOMPRESS select RAID6_PQ select XOR_BLOCKS + select SRCU help Btrfs is a general purpose copy-on-write filesystem with extents, diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 7e60741..0b18070 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1171,6 +1171,7 @@ struct btrfs_space_info { struct percpu_counter total_bytes_pinned; struct list_head list; + /* Protected by the spinlock 'lock'. */ struct list_head ro_bgs; struct rw_semaphore groups_sem; diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 1511658..a684086 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9422,7 +9422,6 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, * are still on the list after taking the semaphore */ list_del_init(&block_group->list); - list_del_init(&block_group->ro_list); if (list_empty(&block_group->space_info->block_groups[index])) { kobj = block_group->space_info->block_group_kobjs[index]; block_group->space_info->block_group_kobjs[index] = NULL; @@ -9464,6 +9463,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, btrfs_remove_free_space_cache(block_group); spin_lock(&block_group->space_info->lock); + list_del_init(&block_group->ro_list); block_group->space_info->total_bytes -= block_group->key.offset; block_group->space_info->bytes_readonly -= block_group->key.offset; block_group->space_info->disk_total -= block_group->key.offset * factor; diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4ebabd2..c73df6a 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1407,8 +1407,8 @@ int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end) while (index <= end_index) { page = find_get_page(inode->i_mapping, index); BUG_ON(!page); /* Pages should be in the extent_io_tree */ - account_page_redirty(page); __set_page_dirty_nobuffers(page); + account_page_redirty(page); page_cache_release(page); index++; } @@ -2190,7 +2190,7 @@ void btrfs_free_io_failure_record(struct inode *inode, u64 start, u64 end) next = next_state(state); - failrec = (struct io_failure_record *)state->private; + failrec = (struct io_failure_record *)(unsigned long)state->private; free_extent_state(state); kfree(failrec); diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 835c04a..b78bbba 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2081,7 +2081,6 @@ static const struct vm_operations_struct btrfs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = btrfs_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 9e1569f..e427cb7e 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -3053,7 +3053,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, ppath = btrfs_alloc_path(); if (!ppath) { - btrfs_free_path(ppath); + btrfs_free_path(path); return -ENOMEM; } @@ -3065,6 +3065,8 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, path->search_commit_root = 1; path->skip_locking = 1; + ppath->search_commit_root = 1; + ppath->skip_locking = 1; /* * trigger the readahead for extent tree csum tree and wait for * completion. During readahead, the scrub is officially paused diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 60f7cbe..6f49b28 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1000,10 +1000,20 @@ int btrfs_sync_fs(struct super_block *sb, int wait) */ if (fs_info->pending_changes == 0) return 0; + /* + * A non-blocking test if the fs is frozen. We must not + * start a new transaction here otherwise a deadlock + * happens. The pending operations are delayed to the + * next commit after thawing. + */ + if (__sb_start_write(sb, SB_FREEZE_WRITE, false)) + __sb_end_write(sb, SB_FREEZE_WRITE); + else + return 0; trans = btrfs_start_transaction(root, 0); - } else { - return PTR_ERR(trans); } + if (IS_ERR(trans)) + return PTR_ERR(trans); } return btrfs_commit_transaction(trans, root); } diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index a605d4e..e88b59d 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -2118,7 +2118,7 @@ void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info) unsigned long prev; unsigned long bit; - prev = cmpxchg(&fs_info->pending_changes, 0, 0); + prev = xchg(&fs_info->pending_changes, 0); if (!prev) return; diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 9a02da1..1a9585d 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2591,6 +2591,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans, } if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) { + blk_finish_plug(&plug); mutex_unlock(&log_root_tree->log_mutex); ret = root_log_ctx.log_ret; goto out; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index c81c0e00..24be059 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1569,7 +1569,6 @@ out: static struct vm_operations_struct ceph_vmops = { .fault = ceph_filemap_fault, .page_mkwrite = ceph_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; int ceph_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index c35c5c6..06ea5cd 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -239,23 +239,21 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl) return err; } -/** - * Must be called with lock_flocks() already held. Fills in the passed - * counter variables, so you can prepare pagelist metadata before calling - * ceph_encode_locks. +/* + * Fills in the passed counter variables, so you can prepare pagelist metadata + * before calling ceph_encode_locks. */ void ceph_count_locks(struct inode *inode, int *fcntl_count, int *flock_count) { - struct file_lock *lock; + struct file_lock_context *ctx; *fcntl_count = 0; *flock_count = 0; - for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { - if (lock->fl_flags & FL_POSIX) - ++(*fcntl_count); - else if (lock->fl_flags & FL_FLOCK) - ++(*flock_count); + ctx = inode->i_flctx; + if (ctx) { + *fcntl_count = ctx->flc_posix_cnt; + *flock_count = ctx->flc_flock_cnt; } dout("counted %d flock locks and %d fcntl locks", *flock_count, *fcntl_count); @@ -271,6 +269,7 @@ int ceph_encode_locks_to_buffer(struct inode *inode, int num_fcntl_locks, int num_flock_locks) { struct file_lock *lock; + struct file_lock_context *ctx = inode->i_flctx; int err = 0; int seen_fcntl = 0; int seen_flock = 0; @@ -279,33 +278,34 @@ int ceph_encode_locks_to_buffer(struct inode *inode, dout("encoding %d flock and %d fcntl locks", num_flock_locks, num_fcntl_locks); - for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { - if (lock->fl_flags & FL_POSIX) { - ++seen_fcntl; - if (seen_fcntl > num_fcntl_locks) { - err = -ENOSPC; - goto fail; - } - err = lock_to_ceph_filelock(lock, &flocks[l]); - if (err) - goto fail; - ++l; + if (!ctx) + return 0; + + spin_lock(&ctx->flc_lock); + list_for_each_entry(lock, &ctx->flc_flock, fl_list) { + ++seen_fcntl; + if (seen_fcntl > num_fcntl_locks) { + err = -ENOSPC; + goto fail; } + err = lock_to_ceph_filelock(lock, &flocks[l]); + if (err) + goto fail; + ++l; } - for (lock = inode->i_flock; lock != NULL; lock = lock->fl_next) { - if (lock->fl_flags & FL_FLOCK) { - ++seen_flock; - if (seen_flock > num_flock_locks) { - err = -ENOSPC; - goto fail; - } - err = lock_to_ceph_filelock(lock, &flocks[l]); - if (err) - goto fail; - ++l; + list_for_each_entry(lock, &ctx->flc_flock, fl_list) { + ++seen_flock; + if (seen_flock > num_flock_locks) { + err = -ENOSPC; + goto fail; } + err = lock_to_ceph_filelock(lock, &flocks[l]); + if (err) + goto fail; + ++l; } fail: + spin_unlock(&ctx->flc_lock); return err; } diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index d2171f4..5f62fb7 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2700,20 +2700,16 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap, struct ceph_filelock *flocks; encode_again: - spin_lock(&inode->i_lock); ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks); - spin_unlock(&inode->i_lock); flocks = kmalloc((num_fcntl_locks+num_flock_locks) * sizeof(struct ceph_filelock), GFP_NOFS); if (!flocks) { err = -ENOMEM; goto out_free; } - spin_lock(&inode->i_lock); err = ceph_encode_locks_to_buffer(inode, flocks, num_fcntl_locks, num_flock_locks); - spin_unlock(&inode->i_lock); if (err) { kfree(flocks); if (err == -ENOSPC) diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 9c56ef7..7febcf2 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -606,9 +606,11 @@ cifs_security_flags_handle_must_flags(unsigned int *flags) *flags = CIFSSEC_MUST_NTLMV2; else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM) *flags = CIFSSEC_MUST_NTLM; - else if ((*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) + else if (CIFSSEC_MUST_LANMAN && + (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) *flags = CIFSSEC_MUST_LANMAN; - else if ((*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) + else if (CIFSSEC_MUST_PLNTXT && + (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) *flags = CIFSSEC_MUST_PLNTXT; *flags |= signflags; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 96b7e9b..8fe1f7a 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -366,6 +366,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) struct cifsLockInfo *li, *tmp; struct cifs_fid fid; struct cifs_pending_open open; + bool oplock_break_cancelled; spin_lock(&cifs_file_list_lock); if (--cifs_file->count > 0) { @@ -397,7 +398,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) } spin_unlock(&cifs_file_list_lock); - cancel_work_sync(&cifs_file->oplock_break); + oplock_break_cancelled = cancel_work_sync(&cifs_file->oplock_break); if (!tcon->need_reconnect && !cifs_file->invalidHandle) { struct TCP_Server_Info *server = tcon->ses->server; @@ -409,6 +410,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) _free_xid(xid); } + if (oplock_break_cancelled) + cifs_done_oplock_break(cifsi); + cifs_del_pending_open(&open); /* @@ -1109,11 +1113,6 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile) return rc; } -/* copied from fs/locks.c with a name change */ -#define cifs_for_each_lock(inode, lockp) \ - for (lockp = &inode->i_flock; *lockp != NULL; \ - lockp = &(*lockp)->fl_next) - struct lock_to_push { struct list_head llist; __u64 offset; @@ -1128,8 +1127,9 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) { struct inode *inode = cfile->dentry->d_inode; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); - struct file_lock *flock, **before; - unsigned int count = 0, i = 0; + struct file_lock *flock; + struct file_lock_context *flctx = inode->i_flctx; + unsigned int i; int rc = 0, xid, type; struct list_head locks_to_send, *el; struct lock_to_push *lck, *tmp; @@ -1137,21 +1137,17 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) xid = get_xid(); - spin_lock(&inode->i_lock); - cifs_for_each_lock(inode, before) { - if ((*before)->fl_flags & FL_POSIX) - count++; - } - spin_unlock(&inode->i_lock); + if (!flctx) + goto out; INIT_LIST_HEAD(&locks_to_send); /* - * Allocating count locks is enough because no FL_POSIX locks can be - * added to the list while we are holding cinode->lock_sem that + * Allocating flc_posix_cnt locks is enough because no FL_POSIX locks + * can be added to the list while we are holding cinode->lock_sem that * protects locking operations of this inode. */ - for (; i < count; i++) { + for (i = 0; i < flctx->flc_posix_cnt; i++) { lck = kmalloc(sizeof(struct lock_to_push), GFP_KERNEL); if (!lck) { rc = -ENOMEM; @@ -1161,11 +1157,8 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) } el = locks_to_send.next; - spin_lock(&inode->i_lock); - cifs_for_each_lock(inode, before) { - flock = *before; - if ((flock->fl_flags & FL_POSIX) == 0) - continue; + spin_lock(&flctx->flc_lock); + list_for_each_entry(flock, &flctx->flc_posix, fl_list) { if (el == &locks_to_send) { /* * The list ended. We don't have enough allocated @@ -1185,9 +1178,8 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) lck->length = length; lck->type = type; lck->offset = flock->fl_start; - el = el->next; } - spin_unlock(&inode->i_lock); + spin_unlock(&flctx->flc_lock); list_for_each_entry_safe(lck, tmp, &locks_to_send, llist) { int stored_rc; @@ -3244,7 +3236,6 @@ static struct vm_operations_struct cifs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = cifs_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c index 45cb59b..8b7898b 100644 --- a/fs/cifs/ioctl.c +++ b/fs/cifs/ioctl.c @@ -86,21 +86,16 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, } src_inode = file_inode(src_file.file); + rc = -EINVAL; + if (S_ISDIR(src_inode->i_mode)) + goto out_fput; /* * Note: cifs case is easier than btrfs since server responsible for * checks for proper open modes and file type and if it wants * server could even support copy of range where source = target */ - - /* so we do not deadlock racing two ioctls on same files */ - if (target_inode < src_inode) { - mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_PARENT); - mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_CHILD); - } else { - mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_PARENT); - mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_CHILD); - } + lock_two_nondirectories(target_inode, src_inode); /* determine range to clone */ rc = -EINVAL; @@ -124,13 +119,7 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, out_unlock: /* although unlocking in the reverse order from locking is not strictly necessary here it is a little cleaner to be consistent */ - if (target_inode < src_inode) { - mutex_unlock(&src_inode->i_mutex); - mutex_unlock(&target_inode->i_mutex); - } else { - mutex_unlock(&target_inode->i_mutex); - mutex_unlock(&src_inode->i_mutex); - } + unlock_two_nondirectories(src_inode, target_inode); out_fput: fdput(src_file); out_drop_write: diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c index 6c15663..a4232ec 100644 --- a/fs/cifs/smbencrypt.c +++ b/fs/cifs/smbencrypt.c @@ -221,7 +221,7 @@ E_md4hash(const unsigned char *passwd, unsigned char *p16, } rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16)); - memset(wpwd, 0, 129 * sizeof(__le16)); + memzero_explicit(wpwd, sizeof(wpwd)); return rc; } diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c index e7cfbaf..1e6e227 100644 --- a/fs/dlm/netlink.c +++ b/fs/dlm/netlink.c @@ -56,13 +56,8 @@ static int send_data(struct sk_buff *skb) { struct genlmsghdr *genlhdr = nlmsg_data((struct nlmsghdr *)skb->data); void *data = genlmsg_data(genlhdr); - int rv; - rv = genlmsg_end(skb, data); - if (rv < 0) { - nlmsg_free(skb); - return rv; - } + genlmsg_end(skb, data); return genlmsg_unicast(&init_net, skb, listener_nlportid); } diff --git a/fs/efivarfs/Kconfig b/fs/efivarfs/Kconfig index 367bbb1..c2499ef 100644 --- a/fs/efivarfs/Kconfig +++ b/fs/efivarfs/Kconfig @@ -1,6 +1,7 @@ config EFIVAR_FS tristate "EFI Variable filesystem" depends on EFI + default m help efivarfs is a replacement filesystem for the old EFI variable support via sysfs, as it doesn't suffer from the diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index 6dad117..ddbce42 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -140,7 +140,7 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor, name[len] = '-'; - efi_guid_unparse(&entry->var.VendorGuid, name + len + 1); + efi_guid_to_str(&entry->var.VendorGuid, name + len + 1); name[len + EFI_VARIABLE_GUID_LEN+1] = '\0'; diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 9b4e7d7..d4dbf3c 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -466,6 +466,8 @@ static void ext3_put_super (struct super_block * sb) } sb->s_fs_info = NULL; kfree(sbi->s_blockgroup_lock); + mutex_destroy(&sbi->s_orphan_lock); + mutex_destroy(&sbi->s_resize_lock); kfree(sbi); } diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 8131be8..7cb5923 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -195,7 +195,6 @@ static const struct vm_operations_struct ext4_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = ext4_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ad88e60..64c39c7 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1046,10 +1046,7 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot); static int ext4_write_info(struct super_block *sb, int type); static int ext4_quota_on(struct super_block *sb, int type, int format_id, struct path *path); -static int ext4_quota_on_sysfile(struct super_block *sb, int type, - int format_id); static int ext4_quota_off(struct super_block *sb, int type); -static int ext4_quota_off_sysfile(struct super_block *sb, int type); static int ext4_quota_on_mount(struct super_block *sb, int type); static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data, size_t len, loff_t off); @@ -1084,16 +1081,6 @@ static const struct quotactl_ops ext4_qctl_operations = { .get_dqblk = dquot_get_dqblk, .set_dqblk = dquot_set_dqblk }; - -static const struct quotactl_ops ext4_qctl_sysfile_operations = { - .quota_on_meta = ext4_quota_on_sysfile, - .quota_off = ext4_quota_off_sysfile, - .quota_sync = dquot_quota_sync, - .get_info = dquot_get_dqinfo, - .set_info = dquot_set_dqinfo, - .get_dqblk = dquot_get_dqblk, - .set_dqblk = dquot_set_dqblk -}; #endif static const struct super_operations ext4_sops = { @@ -3935,7 +3922,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) #ifdef CONFIG_QUOTA sb->dq_op = &ext4_quota_operations; if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) - sb->s_qcop = &ext4_qctl_sysfile_operations; + sb->s_qcop = &dquot_quotactl_sysfile_ops; else sb->s_qcop = &ext4_qctl_operations; sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; @@ -5288,21 +5275,6 @@ static int ext4_enable_quotas(struct super_block *sb) return 0; } -/* - * quota_on function that is used when QUOTA feature is set. - */ -static int ext4_quota_on_sysfile(struct super_block *sb, int type, - int format_id) -{ - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) - return -EINVAL; - - /* - * USAGE was enabled at mount time. Only need to enable LIMITS now. - */ - return ext4_quota_enable(sb, type, format_id, DQUOT_LIMITS_ENABLED); -} - static int ext4_quota_off(struct super_block *sb, int type) { struct inode *inode = sb_dqopt(sb)->files[type]; @@ -5329,18 +5301,6 @@ out: return dquot_quota_off(sb, type); } -/* - * quota_off function that is used when QUOTA feature is set. - */ -static int ext4_quota_off_sysfile(struct super_block *sb, int type) -{ - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) - return -EINVAL; - - /* Disable only the limits. */ - return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); -} - /* Read data from quotafile - avoid pagecache and such because we cannot afford * acquiring the locks... As quota files are never truncated and quota code * itself serializes the operations (and no one else should touch the files) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 3c27e0e..5674ba1 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -92,7 +92,6 @@ static const struct vm_operations_struct f2fs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = f2fs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int get_parent_ino(struct inode *inode, nid_t *pino) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 19d80b8..c01ec3b 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2062,7 +2062,6 @@ static const struct vm_operations_struct fuse_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = fuse_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 3088e2a..7b31430 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -73,7 +73,7 @@ int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) BUG_ON(name == NULL); - if (acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode))) + if (acl && acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode))) return -E2BIG; if (type == ACL_TYPE_ACCESS) { diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index c5a34f0..6371192 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1896,7 +1896,8 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, ht = kzalloc(size, GFP_NOFS | __GFP_NOWARN); if (ht == NULL) - ht = vzalloc(size); + ht = __vmalloc(size, GFP_NOFS | __GFP_NOWARN | __GFP_ZERO, + PAGE_KERNEL); if (!ht) return -ENOMEM; diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 6e600ab..ec9c2d3 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -498,7 +498,6 @@ static const struct vm_operations_struct gfs2_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = gfs2_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; /** diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 08ea717..f42dffb 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -173,19 +173,14 @@ void gfs2_glock_add_to_lru(struct gfs2_glock *gl) spin_unlock(&lru_lock); } -static void __gfs2_glock_remove_from_lru(struct gfs2_glock *gl) +static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) { + spin_lock(&lru_lock); if (!list_empty(&gl->gl_lru)) { list_del_init(&gl->gl_lru); atomic_dec(&lru_count); clear_bit(GLF_LRU, &gl->gl_flags); } -} - -static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) -{ - spin_lock(&lru_lock); - __gfs2_glock_remove_from_lru(gl); spin_unlock(&lru_lock); } @@ -205,9 +200,7 @@ void gfs2_glock_put(struct gfs2_glock *gl) lockref_mark_dead(&gl->gl_lockref); - spin_lock(&lru_lock); - __gfs2_glock_remove_from_lru(gl); - spin_unlock(&lru_lock); + gfs2_glock_remove_from_lru(gl); spin_unlock(&gl->gl_lockref.lock); spin_lock_bucket(gl->gl_hash); hlist_bl_del_rcu(&gl->gl_list); diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 9054002..73c72253 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -543,10 +543,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, } error = gfs2_dir_add(&dip->i_inode, name, ip, da); - if (error) - goto fail_end_trans; -fail_end_trans: gfs2_trans_end(sdp); fail_ipreserv: gfs2_inplace_release(dip); diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index c8b148b..3e193cb 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -667,7 +667,7 @@ static void do_qc(struct gfs2_quota_data *qd, s64 change) static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, s64 change, struct gfs2_quota_data *qd, - struct fs_disk_quota *fdq) + struct qc_dqblk *fdq) { struct inode *inode = &ip->i_inode; struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -697,16 +697,16 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, be64_add_cpu(&q.qu_value, change); qd->qd_qb.qb_value = q.qu_value; if (fdq) { - if (fdq->d_fieldmask & FS_DQ_BSOFT) { - q.qu_warn = cpu_to_be64(fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift); + if (fdq->d_fieldmask & QC_SPC_SOFT) { + q.qu_warn = cpu_to_be64(fdq->d_spc_softlimit >> sdp->sd_sb.sb_bsize_shift); qd->qd_qb.qb_warn = q.qu_warn; } - if (fdq->d_fieldmask & FS_DQ_BHARD) { - q.qu_limit = cpu_to_be64(fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift); + if (fdq->d_fieldmask & QC_SPC_HARD) { + q.qu_limit = cpu_to_be64(fdq->d_spc_hardlimit >> sdp->sd_sb.sb_bsize_shift); qd->qd_qb.qb_limit = q.qu_limit; } - if (fdq->d_fieldmask & FS_DQ_BCOUNT) { - q.qu_value = cpu_to_be64(fdq->d_bcount >> sdp->sd_fsb2bb_shift); + if (fdq->d_fieldmask & QC_SPACE) { + q.qu_value = cpu_to_be64(fdq->d_space >> sdp->sd_sb.sb_bsize_shift); qd->qd_qb.qb_value = q.qu_value; } } @@ -1497,7 +1497,7 @@ static int gfs2_quota_get_xstate(struct super_block *sb, } static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid, - struct fs_disk_quota *fdq) + struct qc_dqblk *fdq) { struct gfs2_sbd *sdp = sb->s_fs_info; struct gfs2_quota_lvb *qlvb; @@ -1505,7 +1505,7 @@ static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid, struct gfs2_holder q_gh; int error; - memset(fdq, 0, sizeof(struct fs_disk_quota)); + memset(fdq, 0, sizeof(*fdq)); if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) return -ESRCH; /* Crazy XFS error code */ @@ -1522,12 +1522,9 @@ static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid, goto out; qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; - fdq->d_version = FS_DQUOT_VERSION; - fdq->d_flags = (qid.type == USRQUOTA) ? FS_USER_QUOTA : FS_GROUP_QUOTA; - fdq->d_id = from_kqid_munged(current_user_ns(), qid); - fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_fsb2bb_shift; - fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_fsb2bb_shift; - fdq->d_bcount = be64_to_cpu(qlvb->qb_value) << sdp->sd_fsb2bb_shift; + fdq->d_spc_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_sb.sb_bsize_shift; + fdq->d_spc_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_sb.sb_bsize_shift; + fdq->d_space = be64_to_cpu(qlvb->qb_value) << sdp->sd_sb.sb_bsize_shift; gfs2_glock_dq_uninit(&q_gh); out: @@ -1536,10 +1533,10 @@ out: } /* GFS2 only supports a subset of the XFS fields */ -#define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD|FS_DQ_BCOUNT) +#define GFS2_FIELDMASK (QC_SPC_SOFT|QC_SPC_HARD|QC_SPACE) static int gfs2_set_dqblk(struct super_block *sb, struct kqid qid, - struct fs_disk_quota *fdq) + struct qc_dqblk *fdq) { struct gfs2_sbd *sdp = sb->s_fs_info; struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); @@ -1583,17 +1580,17 @@ static int gfs2_set_dqblk(struct super_block *sb, struct kqid qid, goto out_i; /* If nothing has changed, this is a no-op */ - if ((fdq->d_fieldmask & FS_DQ_BSOFT) && - ((fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_warn))) - fdq->d_fieldmask ^= FS_DQ_BSOFT; + if ((fdq->d_fieldmask & QC_SPC_SOFT) && + ((fdq->d_spc_softlimit >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_warn))) + fdq->d_fieldmask ^= QC_SPC_SOFT; - if ((fdq->d_fieldmask & FS_DQ_BHARD) && - ((fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_limit))) - fdq->d_fieldmask ^= FS_DQ_BHARD; + if ((fdq->d_fieldmask & QC_SPC_HARD) && + ((fdq->d_spc_hardlimit >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_limit))) + fdq->d_fieldmask ^= QC_SPC_HARD; - if ((fdq->d_fieldmask & FS_DQ_BCOUNT) && - ((fdq->d_bcount >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_value))) - fdq->d_fieldmask ^= FS_DQ_BCOUNT; + if ((fdq->d_fieldmask & QC_SPACE) && + ((fdq->d_space >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_value))) + fdq->d_fieldmask ^= QC_SPACE; if (fdq->d_fieldmask == 0) goto out_i; diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 573bd3b..1b64577 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -439,7 +439,7 @@ static void gfs2_recovery_done(struct gfs2_sbd *sdp, unsigned int jid, ls->ls_recover_jid_done = jid; ls->ls_recover_jid_status = message; - sprintf(env_jid, "JID=%d", jid); + sprintf(env_jid, "JID=%u", jid); sprintf(env_status, "RECOVERY=%s", message == LM_RD_SUCCESS ? "Done" : "Failed"); kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 3ab566b..ae8e881 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -96,7 +96,7 @@ static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) struct super_block *sb = sdp->sd_vfs; int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1; - return snprintf(buf, PAGE_SIZE, "%u\n", frozen); + return snprintf(buf, PAGE_SIZE, "%d\n", frozen); } static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) @@ -181,7 +181,7 @@ int inode_init_always(struct super_block *sb, struct inode *inode) #ifdef CONFIG_FSNOTIFY inode->i_fsnotify_mask = 0; #endif - + inode->i_flctx = NULL; this_cpu_inc(nr_inodes); return 0; @@ -224,6 +224,7 @@ void __destroy_inode(struct inode *inode) BUG_ON(inode_has_buffers(inode)); security_inode_free(inode); fsnotify_inode_delete(inode); + locks_free_lock_context(inode->i_flctx); if (!inode->i_nlink) { WARN_ON(atomic_long_read(&inode->i_sb->s_remove_count) == 0); atomic_long_dec(&inode->i_sb->s_remove_count); @@ -342,7 +343,6 @@ void address_space_init_once(struct address_space *mapping) INIT_LIST_HEAD(&mapping->private_list); spin_lock_init(&mapping->private_lock); mapping->i_mmap = RB_ROOT; - INIT_LIST_HEAD(&mapping->i_mmap_nonlinear); } EXPORT_SYMBOL(address_space_init_once); @@ -379,6 +379,11 @@ int __generic_block_fiemap(struct inode *inode, past_eof = true; } cond_resched(); + if (fatal_signal_pending(current)) { + ret = -EINTR; + break; + } + } while (1); /* If ret is 1 then we just hit the end of the extent array */ diff --git a/fs/isofs/util.c b/fs/isofs/util.c index 01e1ee7..005a15c 100644 --- a/fs/isofs/util.c +++ b/fs/isofs/util.c @@ -2,6 +2,7 @@ * linux/fs/isofs/util.c */ +#include <linux/time.h> #include "isofs.h" /* @@ -17,9 +18,9 @@ int iso_date(char * p, int flag) { int year, month, day, hour, minute, second, tz; - int crtime, days, i; + int crtime; - year = p[0] - 70; + year = p[0]; month = p[1]; day = p[2]; hour = p[3]; @@ -31,18 +32,7 @@ int iso_date(char * p, int flag) if (year < 0) { crtime = 0; } else { - int monlen[12] = {31,28,31,30,31,30,31,31,30,31,30,31}; - - days = year * 365; - if (year > 2) - days += (year+1) / 4; - for (i = 1; i < month; i++) - days += monlen[i-1]; - if (((year+2) % 4) == 0 && month > 2) - days++; - days += day - 1; - crtime = ((((days * 24) + hour) * 60 + minute) * 60) - + second; + crtime = mktime64(year+1900, month, day, hour, minute, second); /* sign extend */ if (tz & 0x80) diff --git a/fs/jfs/endian24.h b/fs/jfs/endian24.h deleted file mode 100644 index fa92f7f1..0000000 --- a/fs/jfs/endian24.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * Copyright (C) International Business Machines Corp., 2001 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#ifndef _H_ENDIAN24 -#define _H_ENDIAN24 - -/* - * endian24.h: - * - * Endian conversion for 24-byte data - * - */ -#define __swab24(x) \ -({ \ - __u32 __x = (x); \ - ((__u32)( \ - ((__x & (__u32)0x000000ffUL) << 16) | \ - (__x & (__u32)0x0000ff00UL) | \ - ((__x & (__u32)0x00ff0000UL) >> 16) )); \ -}) - -#if (defined(__KERNEL__) && defined(__LITTLE_ENDIAN)) || (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN)) - #define __cpu_to_le24(x) ((__u32)(x)) - #define __le24_to_cpu(x) ((__u32)(x)) -#else - #define __cpu_to_le24(x) __swab24(x) - #define __le24_to_cpu(x) __swab24(x) -#endif - -#ifdef __KERNEL__ - #define cpu_to_le24 __cpu_to_le24 - #define le24_to_cpu __le24_to_cpu -#endif - -#endif /* !_H_ENDIAN24 */ diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index 984c2bb..d88576e 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -1040,8 +1040,8 @@ static int dtSplitUp(tid_t tid, pxdlist.maxnpxd = 1; pxdlist.npxd = 0; pxd = &pxdlist.pxd[0]; - PXDaddress(pxd, nxaddr) - PXDlength(pxd, xlen + n); + PXDaddress(pxd, nxaddr); + PXDlength(pxd, xlen + n); split->pxdlist = &pxdlist; if ((rc = dtExtendPage(tid, ip, split, btstack))) { nxaddr = addressPXD(pxd); diff --git a/fs/jfs/jfs_types.h b/fs/jfs/jfs_types.h index 43ea371..8f602dc 100644 --- a/fs/jfs/jfs_types.h +++ b/fs/jfs/jfs_types.h @@ -30,8 +30,6 @@ #include <linux/types.h> #include <linux/nls.h> -#include "endian24.h" - /* * transaction and lock id's * @@ -59,26 +57,42 @@ struct timestruc_t { /* * physical xd (pxd) + * + * The leftmost 24 bits of len_addr are the extent length. + * The rightmost 8 bits of len_addr are the most signficant bits of + * the extent address */ typedef struct { - unsigned len:24; - unsigned addr1:8; + __le32 len_addr; __le32 addr2; } pxd_t; /* xd_t field construction */ -#define PXDlength(pxd, length32) ((pxd)->len = __cpu_to_le24(length32)) -#define PXDaddress(pxd, address64)\ -{\ - (pxd)->addr1 = ((s64)address64) >> 32;\ - (pxd)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\ +static inline void PXDlength(pxd_t *pxd, __u32 len) +{ + pxd->len_addr = (pxd->len_addr & cpu_to_le32(~0xffffff)) | + cpu_to_le32(len & 0xffffff); +} + +static inline void PXDaddress(pxd_t *pxd, __u64 addr) +{ + pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) | + cpu_to_le32((addr >> 32)<<24); + pxd->addr2 = cpu_to_le32(addr & 0xffffffff); } /* xd_t field extraction */ -#define lengthPXD(pxd) __le24_to_cpu((pxd)->len) -#define addressPXD(pxd)\ - ( ((s64)((pxd)->addr1)) << 32 | __le32_to_cpu((pxd)->addr2)) +static inline __u32 lengthPXD(pxd_t *pxd) +{ + return le32_to_cpu((pxd)->len_addr) & 0xffffff; +} + +static inline __u64 addressPXD(pxd_t *pxd) +{ + __u64 n = le32_to_cpu(pxd->len_addr) & ~0xffffff; + return (n << 8) + le32_to_cpu(pxd->addr2); +} #define MAXTREEHEIGHT 8 /* pxd list */ @@ -93,12 +107,10 @@ struct pxdlist { * data extent descriptor (dxd) */ typedef struct { - unsigned flag:8; /* 1: flags */ - unsigned rsrvd:24; + __u8 flag; /* 1: flags */ + __u8 rsrvd[3]; __le32 size; /* 4: size in byte */ - unsigned len:24; /* 3: length in unit of fsblksize */ - unsigned addr1:8; /* 1: address in unit of fsblksize */ - __le32 addr2; /* 4: address in unit of fsblksize */ + pxd_t loc; /* 8: address and length in unit of fsblksize */ } dxd_t; /* - 16 - */ /* dxd_t flags */ @@ -109,12 +121,11 @@ typedef struct { #define DXD_CORRUPT 0x08 /* Inconsistency detected */ /* dxd_t field construction - * Conveniently, the PXD macros work for DXD */ -#define DXDlength PXDlength -#define DXDaddress PXDaddress -#define lengthDXD lengthPXD -#define addressDXD addressPXD +#define DXDlength(dxd, len) PXDlength(&(dxd)->loc, len) +#define DXDaddress(dxd, addr) PXDaddress(&(dxd)->loc, addr) +#define lengthDXD(dxd) lengthPXD(&(dxd)->loc) +#define addressDXD(dxd) addressPXD(&(dxd)->loc) #define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32)) #define sizeDXD(dxd) le32_to_cpu((dxd)->size) diff --git a/fs/jfs/jfs_xtree.h b/fs/jfs/jfs_xtree.h index 08c0c74..1e09879 100644 --- a/fs/jfs/jfs_xtree.h +++ b/fs/jfs/jfs_xtree.h @@ -29,13 +29,11 @@ * extent allocation descriptor (xad) */ typedef struct xad { - unsigned flag:8; /* 1: flag */ - unsigned rsvrd:16; /* 2: reserved */ - unsigned off1:8; /* 1: offset in unit of fsblksize */ - __le32 off2; /* 4: offset in unit of fsblksize */ - unsigned len:24; /* 3: length in unit of fsblksize */ - unsigned addr1:8; /* 1: address in unit of fsblksize */ - __le32 addr2; /* 4: address in unit of fsblksize */ + __u8 flag; /* 1: flag */ + __u8 rsvrd[2]; /* 2: reserved */ + __u8 off1; /* 1: offset in unit of fsblksize */ + __le32 off2; /* 4: offset in unit of fsblksize */ + pxd_t loc; /* 8: length and address in unit of fsblksize */ } xad_t; /* (16) */ #define MAXXLEN ((1 << 24) - 1) @@ -49,19 +47,14 @@ typedef struct xad { (xad)->off1 = ((u64)offset64) >> 32;\ (xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\ } -#define XADaddress(xad, address64)\ -{\ - (xad)->addr1 = ((u64)address64) >> 32;\ - (xad)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\ -} -#define XADlength(xad, length32) (xad)->len = __cpu_to_le24(length32) +#define XADaddress(xad, address64) PXDaddress(&(xad)->loc, address64) +#define XADlength(xad, length32) PXDlength(&(xad)->loc, length32) /* xad_t field extraction */ #define offsetXAD(xad)\ ( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2)) -#define addressXAD(xad)\ - ( ((s64)((xad)->addr1)) << 32 | __le32_to_cpu((xad)->addr2)) -#define lengthXAD(xad) __le24_to_cpu((xad)->len) +#define addressXAD(xad) addressPXD(&(xad)->loc) +#define lengthXAD(xad) lengthPXD(&(xad)->loc) /* xad list */ struct xadlist { diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 16c3a955..5d30c56 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -619,8 +619,7 @@ out_mount_failed: iput(sbi->direct_inode); sbi->direct_inode = NULL; out_unload: - if (sbi->nls_tab) - unload_nls(sbi->nls_tab); + unload_nls(sbi->nls_tab); out_kfree: kfree(sbi); return ret; diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index 1cc6ec5..47a32b6 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -65,7 +65,7 @@ static inline struct sockaddr *nsm_addr(const struct nsm_handle *nsm) return (struct sockaddr *)&nsm->sm_addr; } -static struct rpc_clnt *nsm_create(struct net *net) +static struct rpc_clnt *nsm_create(struct net *net, const char *nodename) { struct sockaddr_in sin = { .sin_family = AF_INET, @@ -77,6 +77,7 @@ static struct rpc_clnt *nsm_create(struct net *net) .address = (struct sockaddr *)&sin, .addrsize = sizeof(sin), .servername = "rpc.statd", + .nodename = nodename, .program = &nsm_program, .version = NSM_VERSION, .authflavor = RPC_AUTH_NULL, @@ -102,7 +103,7 @@ out: return clnt; } -static struct rpc_clnt *nsm_client_get(struct net *net) +static struct rpc_clnt *nsm_client_get(struct net *net, const char *nodename) { struct rpc_clnt *clnt, *new; struct lockd_net *ln = net_generic(net, lockd_net_id); @@ -111,7 +112,7 @@ static struct rpc_clnt *nsm_client_get(struct net *net) if (clnt != NULL) goto out; - clnt = new = nsm_create(net); + clnt = new = nsm_create(net, nodename); if (IS_ERR(clnt)) goto out; @@ -190,19 +191,23 @@ int nsm_monitor(const struct nlm_host *host) struct nsm_res res; int status; struct rpc_clnt *clnt; + const char *nodename = NULL; dprintk("lockd: nsm_monitor(%s)\n", nsm->sm_name); if (nsm->sm_monitored) return 0; + if (host->h_rpcclnt) + nodename = host->h_rpcclnt->cl_nodename; + /* * Choose whether to record the caller_name or IP address of * this peer in the local rpc.statd's database. */ nsm->sm_mon_name = nsm_use_hostnames ? nsm->sm_name : nsm->sm_addrbuf; - clnt = nsm_client_get(host->net); + clnt = nsm_client_get(host->net, nodename); if (IS_ERR(clnt)) { status = PTR_ERR(clnt); dprintk("lockd: failed to create NSM upcall transport, " diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index 5659874..5581e02 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -57,8 +57,8 @@ static DEFINE_SPINLOCK(nlm_blocked_lock); static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) { /* - * We can get away with a static buffer because we're only - * called with BKL held. + * We can get away with a static buffer because this is only called + * from lockd, which is single-threaded. */ static char buf[2*NLM_MAXCOOKIELEN+1]; unsigned int i, len = sizeof(buf); diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c index d12ff4e..665ef5a 100644 --- a/fs/lockd/svcsubs.c +++ b/fs/lockd/svcsubs.c @@ -164,12 +164,15 @@ nlm_traverse_locks(struct nlm_host *host, struct nlm_file *file, { struct inode *inode = nlmsvc_file_inode(file); struct file_lock *fl; + struct file_lock_context *flctx = inode->i_flctx; struct nlm_host *lockhost; + if (!flctx || list_empty_careful(&flctx->flc_posix)) + return 0; again: file->f_locks = 0; - spin_lock(&inode->i_lock); - for (fl = inode->i_flock; fl; fl = fl->fl_next) { + spin_lock(&flctx->flc_lock); + list_for_each_entry(fl, &flctx->flc_posix, fl_list) { if (fl->fl_lmops != &nlmsvc_lock_operations) continue; @@ -180,7 +183,7 @@ again: if (match(lockhost, host)) { struct file_lock lock = *fl; - spin_unlock(&inode->i_lock); + spin_unlock(&flctx->flc_lock); lock.fl_type = F_UNLCK; lock.fl_start = 0; lock.fl_end = OFFSET_MAX; @@ -192,7 +195,7 @@ again: goto again; } } - spin_unlock(&inode->i_lock); + spin_unlock(&flctx->flc_lock); return 0; } @@ -223,18 +226,21 @@ nlm_file_inuse(struct nlm_file *file) { struct inode *inode = nlmsvc_file_inode(file); struct file_lock *fl; + struct file_lock_context *flctx = inode->i_flctx; if (file->f_count || !list_empty(&file->f_blocks) || file->f_shares) return 1; - spin_lock(&inode->i_lock); - for (fl = inode->i_flock; fl; fl = fl->fl_next) { - if (fl->fl_lmops == &nlmsvc_lock_operations) { - spin_unlock(&inode->i_lock); - return 1; + if (flctx && !list_empty_careful(&flctx->flc_posix)) { + spin_lock(&flctx->flc_lock); + list_for_each_entry(fl, &flctx->flc_posix, fl_list) { + if (fl->fl_lmops == &nlmsvc_lock_operations) { + spin_unlock(&flctx->flc_lock); + return 1; + } } + spin_unlock(&flctx->flc_lock); } - spin_unlock(&inode->i_lock); file->f_locks = 0; return 0; } diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c index 9340e7e..5b651da 100644 --- a/fs/lockd/xdr.c +++ b/fs/lockd/xdr.c @@ -95,14 +95,6 @@ nlm_decode_fh(__be32 *p, struct nfs_fh *f) return p + XDR_QUADLEN(NFS2_FHSIZE); } -static inline __be32 * -nlm_encode_fh(__be32 *p, struct nfs_fh *f) -{ - *p++ = htonl(NFS2_FHSIZE); - memcpy(p, f->data, NFS2_FHSIZE); - return p + XDR_QUADLEN(NFS2_FHSIZE); -} - /* * Encode and decode owner handle */ @@ -137,7 +137,7 @@ #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) -#define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG)) +#define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG|FL_LAYOUT)) #define IS_OFDLCK(fl) (fl->fl_flags & FL_OFDLCK) static bool lease_breaking(struct file_lock *fl) @@ -157,14 +157,11 @@ static int target_leasetype(struct file_lock *fl) int leases_enable = 1; int lease_break_time = 45; -#define for_each_lock(inode, lockp) \ - for (lockp = &inode->i_flock; *lockp != NULL; lockp = &(*lockp)->fl_next) - /* * The global file_lock_list is only used for displaying /proc/locks, so we * keep a list on each CPU, with each list protected by its own spinlock via * the file_lock_lglock. Note that alterations to the list also require that - * the relevant i_lock is held. + * the relevant flc_lock is held. */ DEFINE_STATIC_LGLOCK(file_lock_lglock); static DEFINE_PER_CPU(struct hlist_head, file_lock_list); @@ -192,21 +189,68 @@ static DEFINE_HASHTABLE(blocked_hash, BLOCKED_HASH_BITS); * contrast to those that are acting as records of acquired locks). * * Note that when we acquire this lock in order to change the above fields, - * we often hold the i_lock as well. In certain cases, when reading the fields + * we often hold the flc_lock as well. In certain cases, when reading the fields * protected by this lock, we can skip acquiring it iff we already hold the - * i_lock. + * flc_lock. * * In particular, adding an entry to the fl_block list requires that you hold - * both the i_lock and the blocked_lock_lock (acquired in that order). Deleting - * an entry from the list however only requires the file_lock_lock. + * both the flc_lock and the blocked_lock_lock (acquired in that order). + * Deleting an entry from the list however only requires the file_lock_lock. */ static DEFINE_SPINLOCK(blocked_lock_lock); +static struct kmem_cache *flctx_cache __read_mostly; static struct kmem_cache *filelock_cache __read_mostly; +static struct file_lock_context * +locks_get_lock_context(struct inode *inode) +{ + struct file_lock_context *new; + + if (likely(inode->i_flctx)) + goto out; + + new = kmem_cache_alloc(flctx_cache, GFP_KERNEL); + if (!new) + goto out; + + spin_lock_init(&new->flc_lock); + INIT_LIST_HEAD(&new->flc_flock); + INIT_LIST_HEAD(&new->flc_posix); + INIT_LIST_HEAD(&new->flc_lease); + + /* + * Assign the pointer if it's not already assigned. If it is, then + * free the context we just allocated. + */ + spin_lock(&inode->i_lock); + if (likely(!inode->i_flctx)) { + inode->i_flctx = new; + new = NULL; + } + spin_unlock(&inode->i_lock); + + if (new) + kmem_cache_free(flctx_cache, new); +out: + return inode->i_flctx; +} + +void +locks_free_lock_context(struct file_lock_context *ctx) +{ + if (ctx) { + WARN_ON_ONCE(!list_empty(&ctx->flc_flock)); + WARN_ON_ONCE(!list_empty(&ctx->flc_posix)); + WARN_ON_ONCE(!list_empty(&ctx->flc_lease)); + kmem_cache_free(flctx_cache, ctx); + } +} + static void locks_init_lock_heads(struct file_lock *fl) { INIT_HLIST_NODE(&fl->fl_link); + INIT_LIST_HEAD(&fl->fl_list); INIT_LIST_HEAD(&fl->fl_block); init_waitqueue_head(&fl->fl_wait); } @@ -243,6 +287,7 @@ EXPORT_SYMBOL_GPL(locks_release_private); void locks_free_lock(struct file_lock *fl) { BUG_ON(waitqueue_active(&fl->fl_wait)); + BUG_ON(!list_empty(&fl->fl_list)); BUG_ON(!list_empty(&fl->fl_block)); BUG_ON(!hlist_unhashed(&fl->fl_link)); @@ -257,8 +302,8 @@ locks_dispose_list(struct list_head *dispose) struct file_lock *fl; while (!list_empty(dispose)) { - fl = list_first_entry(dispose, struct file_lock, fl_block); - list_del_init(&fl->fl_block); + fl = list_first_entry(dispose, struct file_lock, fl_list); + list_del_init(&fl->fl_list); locks_free_lock(fl); } } @@ -513,7 +558,7 @@ static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2) return fl1->fl_owner == fl2->fl_owner; } -/* Must be called with the i_lock held! */ +/* Must be called with the flc_lock held! */ static void locks_insert_global_locks(struct file_lock *fl) { lg_local_lock(&file_lock_lglock); @@ -522,12 +567,12 @@ static void locks_insert_global_locks(struct file_lock *fl) lg_local_unlock(&file_lock_lglock); } -/* Must be called with the i_lock held! */ +/* Must be called with the flc_lock held! */ static void locks_delete_global_locks(struct file_lock *fl) { /* * Avoid taking lock if already unhashed. This is safe since this check - * is done while holding the i_lock, and new insertions into the list + * is done while holding the flc_lock, and new insertions into the list * also require that it be held. */ if (hlist_unhashed(&fl->fl_link)) @@ -579,10 +624,10 @@ static void locks_delete_block(struct file_lock *waiter) * the order they blocked. The documentation doesn't require this but * it seems like the reasonable thing to do. * - * Must be called with both the i_lock and blocked_lock_lock held. The fl_block - * list itself is protected by the blocked_lock_lock, but by ensuring that the - * i_lock is also held on insertions we can avoid taking the blocked_lock_lock - * in some cases when we see that the fl_block list is empty. + * Must be called with both the flc_lock and blocked_lock_lock held. The + * fl_block list itself is protected by the blocked_lock_lock, but by ensuring + * that the flc_lock is also held on insertions we can avoid taking the + * blocked_lock_lock in some cases when we see that the fl_block list is empty. */ static void __locks_insert_block(struct file_lock *blocker, struct file_lock *waiter) @@ -594,7 +639,7 @@ static void __locks_insert_block(struct file_lock *blocker, locks_insert_global_blocked(waiter); } -/* Must be called with i_lock held. */ +/* Must be called with flc_lock held. */ static void locks_insert_block(struct file_lock *blocker, struct file_lock *waiter) { @@ -606,15 +651,15 @@ static void locks_insert_block(struct file_lock *blocker, /* * Wake up processes blocked waiting for blocker. * - * Must be called with the inode->i_lock held! + * Must be called with the inode->flc_lock held! */ static void locks_wake_up_blocks(struct file_lock *blocker) { /* * Avoid taking global lock if list is empty. This is safe since new - * blocked requests are only added to the list under the i_lock, and - * the i_lock is always held here. Note that removal from the fl_block - * list does not require the i_lock, so we must recheck list_empty() + * blocked requests are only added to the list under the flc_lock, and + * the flc_lock is always held here. Note that removal from the fl_block + * list does not require the flc_lock, so we must recheck list_empty() * after acquiring the blocked_lock_lock. */ if (list_empty(&blocker->fl_block)) @@ -635,63 +680,36 @@ static void locks_wake_up_blocks(struct file_lock *blocker) spin_unlock(&blocked_lock_lock); } -/* Insert file lock fl into an inode's lock list at the position indicated - * by pos. At the same time add the lock to the global file lock list. - * - * Must be called with the i_lock held! - */ -static void locks_insert_lock(struct file_lock **pos, struct file_lock *fl) +static void +locks_insert_lock_ctx(struct file_lock *fl, int *counter, + struct list_head *before) { fl->fl_nspid = get_pid(task_tgid(current)); - - /* insert into file's list */ - fl->fl_next = *pos; - *pos = fl; - + list_add_tail(&fl->fl_list, before); + ++*counter; locks_insert_global_locks(fl); } -/** - * locks_delete_lock - Delete a lock and then free it. - * @thisfl_p: pointer that points to the fl_next field of the previous - * inode->i_flock list entry - * - * Unlink a lock from all lists and free the namespace reference, but don't - * free it yet. Wake up processes that are blocked waiting for this lock and - * notify the FS that the lock has been cleared. - * - * Must be called with the i_lock held! - */ -static void locks_unlink_lock(struct file_lock **thisfl_p) +static void +locks_unlink_lock_ctx(struct file_lock *fl, int *counter) { - struct file_lock *fl = *thisfl_p; - locks_delete_global_locks(fl); - - *thisfl_p = fl->fl_next; - fl->fl_next = NULL; - + list_del_init(&fl->fl_list); + --*counter; if (fl->fl_nspid) { put_pid(fl->fl_nspid); fl->fl_nspid = NULL; } - locks_wake_up_blocks(fl); } -/* - * Unlink a lock from all lists and free it. - * - * Must be called with i_lock held! - */ -static void locks_delete_lock(struct file_lock **thisfl_p, - struct list_head *dispose) +static void +locks_delete_lock_ctx(struct file_lock *fl, int *counter, + struct list_head *dispose) { - struct file_lock *fl = *thisfl_p; - - locks_unlink_lock(thisfl_p); + locks_unlink_lock_ctx(fl, counter); if (dispose) - list_add(&fl->fl_block, dispose); + list_add(&fl->fl_list, dispose); else locks_free_lock(fl); } @@ -746,22 +764,27 @@ void posix_test_lock(struct file *filp, struct file_lock *fl) { struct file_lock *cfl; + struct file_lock_context *ctx; struct inode *inode = file_inode(filp); - spin_lock(&inode->i_lock); - for (cfl = file_inode(filp)->i_flock; cfl; cfl = cfl->fl_next) { - if (!IS_POSIX(cfl)) - continue; - if (posix_locks_conflict(fl, cfl)) - break; - } - if (cfl) { - locks_copy_conflock(fl, cfl); - if (cfl->fl_nspid) - fl->fl_pid = pid_vnr(cfl->fl_nspid); - } else + ctx = inode->i_flctx; + if (!ctx || list_empty_careful(&ctx->flc_posix)) { fl->fl_type = F_UNLCK; - spin_unlock(&inode->i_lock); + return; + } + + spin_lock(&ctx->flc_lock); + list_for_each_entry(cfl, &ctx->flc_posix, fl_list) { + if (posix_locks_conflict(fl, cfl)) { + locks_copy_conflock(fl, cfl); + if (cfl->fl_nspid) + fl->fl_pid = pid_vnr(cfl->fl_nspid); + goto out; + } + } + fl->fl_type = F_UNLCK; +out: + spin_unlock(&ctx->flc_lock); return; } EXPORT_SYMBOL(posix_test_lock); @@ -845,34 +868,34 @@ static int posix_locks_deadlock(struct file_lock *caller_fl, static int flock_lock_file(struct file *filp, struct file_lock *request) { struct file_lock *new_fl = NULL; - struct file_lock **before; - struct inode * inode = file_inode(filp); + struct file_lock *fl; + struct file_lock_context *ctx; + struct inode *inode = file_inode(filp); int error = 0; - int found = 0; + bool found = false; LIST_HEAD(dispose); + ctx = locks_get_lock_context(inode); + if (!ctx) + return -ENOMEM; + if (!(request->fl_flags & FL_ACCESS) && (request->fl_type != F_UNLCK)) { new_fl = locks_alloc_lock(); if (!new_fl) return -ENOMEM; } - spin_lock(&inode->i_lock); + spin_lock(&ctx->flc_lock); if (request->fl_flags & FL_ACCESS) goto find_conflict; - for_each_lock(inode, before) { - struct file_lock *fl = *before; - if (IS_POSIX(fl)) - break; - if (IS_LEASE(fl)) - continue; + list_for_each_entry(fl, &ctx->flc_flock, fl_list) { if (filp != fl->fl_file) continue; if (request->fl_type == fl->fl_type) goto out; - found = 1; - locks_delete_lock(before, &dispose); + found = true; + locks_delete_lock_ctx(fl, &ctx->flc_flock_cnt, &dispose); break; } @@ -887,18 +910,13 @@ static int flock_lock_file(struct file *filp, struct file_lock *request) * give it the opportunity to lock the file. */ if (found) { - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); cond_resched(); - spin_lock(&inode->i_lock); + spin_lock(&ctx->flc_lock); } find_conflict: - for_each_lock(inode, before) { - struct file_lock *fl = *before; - if (IS_POSIX(fl)) - break; - if (IS_LEASE(fl)) - continue; + list_for_each_entry(fl, &ctx->flc_flock, fl_list) { if (!flock_locks_conflict(request, fl)) continue; error = -EAGAIN; @@ -911,12 +929,12 @@ find_conflict: if (request->fl_flags & FL_ACCESS) goto out; locks_copy_lock(new_fl, request); - locks_insert_lock(before, new_fl); + locks_insert_lock_ctx(new_fl, &ctx->flc_flock_cnt, &ctx->flc_flock); new_fl = NULL; error = 0; out: - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); if (new_fl) locks_free_lock(new_fl); locks_dispose_list(&dispose); @@ -925,16 +943,20 @@ out: static int __posix_lock_file(struct inode *inode, struct file_lock *request, struct file_lock *conflock) { - struct file_lock *fl; + struct file_lock *fl, *tmp; struct file_lock *new_fl = NULL; struct file_lock *new_fl2 = NULL; struct file_lock *left = NULL; struct file_lock *right = NULL; - struct file_lock **before; + struct file_lock_context *ctx; int error; bool added = false; LIST_HEAD(dispose); + ctx = locks_get_lock_context(inode); + if (!ctx) + return -ENOMEM; + /* * We may need two file_lock structures for this operation, * so we get them in advance to avoid races. @@ -948,15 +970,14 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str new_fl2 = locks_alloc_lock(); } - spin_lock(&inode->i_lock); + spin_lock(&ctx->flc_lock); /* * New lock request. Walk all POSIX locks and look for conflicts. If * there are any, either return error or put the request on the * blocker's list of waiters and the global blocked_hash. */ if (request->fl_type != F_UNLCK) { - for_each_lock(inode, before) { - fl = *before; + list_for_each_entry(fl, &ctx->flc_posix, fl_list) { if (!IS_POSIX(fl)) continue; if (!posix_locks_conflict(request, fl)) @@ -986,29 +1007,25 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str if (request->fl_flags & FL_ACCESS) goto out; - /* - * Find the first old lock with the same owner as the new lock. - */ - - before = &inode->i_flock; - - /* First skip locks owned by other processes. */ - while ((fl = *before) && (!IS_POSIX(fl) || - !posix_same_owner(request, fl))) { - before = &fl->fl_next; + /* Find the first old lock with the same owner as the new lock */ + list_for_each_entry(fl, &ctx->flc_posix, fl_list) { + if (posix_same_owner(request, fl)) + break; } /* Process locks with this owner. */ - while ((fl = *before) && posix_same_owner(request, fl)) { - /* Detect adjacent or overlapping regions (if same lock type) - */ + list_for_each_entry_safe_from(fl, tmp, &ctx->flc_posix, fl_list) { + if (!posix_same_owner(request, fl)) + break; + + /* Detect adjacent or overlapping regions (if same lock type) */ if (request->fl_type == fl->fl_type) { /* In all comparisons of start vs end, use * "start - 1" rather than "end + 1". If end * is OFFSET_MAX, end + 1 will become negative. */ if (fl->fl_end < request->fl_start - 1) - goto next_lock; + continue; /* If the next lock in the list has entirely bigger * addresses than the new one, insert the lock here. */ @@ -1029,18 +1046,18 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str else request->fl_end = fl->fl_end; if (added) { - locks_delete_lock(before, &dispose); + locks_delete_lock_ctx(fl, &ctx->flc_posix_cnt, + &dispose); continue; } request = fl; added = true; - } - else { + } else { /* Processing for different lock types is a bit * more complex. */ if (fl->fl_end < request->fl_start) - goto next_lock; + continue; if (fl->fl_start > request->fl_end) break; if (request->fl_type == F_UNLCK) @@ -1059,7 +1076,8 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str * one (This may happen several times). */ if (added) { - locks_delete_lock(before, &dispose); + locks_delete_lock_ctx(fl, + &ctx->flc_posix_cnt, &dispose); continue; } /* @@ -1075,15 +1093,13 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str locks_copy_lock(new_fl, request); request = new_fl; new_fl = NULL; - locks_delete_lock(before, &dispose); - locks_insert_lock(before, request); + locks_insert_lock_ctx(request, + &ctx->flc_posix_cnt, &fl->fl_list); + locks_delete_lock_ctx(fl, + &ctx->flc_posix_cnt, &dispose); added = true; } } - /* Go on to next lock. - */ - next_lock: - before = &fl->fl_next; } /* @@ -1108,7 +1124,8 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str goto out; } locks_copy_lock(new_fl, request); - locks_insert_lock(before, new_fl); + locks_insert_lock_ctx(new_fl, &ctx->flc_posix_cnt, + &fl->fl_list); new_fl = NULL; } if (right) { @@ -1119,7 +1136,8 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str left = new_fl2; new_fl2 = NULL; locks_copy_lock(left, right); - locks_insert_lock(before, left); + locks_insert_lock_ctx(left, &ctx->flc_posix_cnt, + &fl->fl_list); } right->fl_start = request->fl_end + 1; locks_wake_up_blocks(right); @@ -1129,7 +1147,7 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str locks_wake_up_blocks(left); } out: - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); /* * Free any unused locks. */ @@ -1199,22 +1217,29 @@ EXPORT_SYMBOL(posix_lock_file_wait); */ int locks_mandatory_locked(struct file *file) { + int ret; struct inode *inode = file_inode(file); + struct file_lock_context *ctx; struct file_lock *fl; + ctx = inode->i_flctx; + if (!ctx || list_empty_careful(&ctx->flc_posix)) + return 0; + /* * Search the lock list for this inode for any POSIX locks. */ - spin_lock(&inode->i_lock); - for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) { - if (!IS_POSIX(fl)) - continue; + spin_lock(&ctx->flc_lock); + ret = 0; + list_for_each_entry(fl, &ctx->flc_posix, fl_list) { if (fl->fl_owner != current->files && - fl->fl_owner != file) + fl->fl_owner != file) { + ret = -EAGAIN; break; + } } - spin_unlock(&inode->i_lock); - return fl ? -EAGAIN : 0; + spin_unlock(&ctx->flc_lock); + return ret; } /** @@ -1294,9 +1319,9 @@ static void lease_clear_pending(struct file_lock *fl, int arg) } /* We already had a lease on this file; just change its type */ -int lease_modify(struct file_lock **before, int arg, struct list_head *dispose) +int lease_modify(struct file_lock *fl, int arg, struct list_head *dispose) { - struct file_lock *fl = *before; + struct file_lock_context *flctx; int error = assign_type(fl, arg); if (error) @@ -1306,6 +1331,7 @@ int lease_modify(struct file_lock **before, int arg, struct list_head *dispose) if (arg == F_UNLCK) { struct file *filp = fl->fl_file; + flctx = file_inode(filp)->i_flctx; f_delown(filp); filp->f_owner.signum = 0; fasync_helper(0, fl->fl_file, 0, &fl->fl_fasync); @@ -1313,7 +1339,7 @@ int lease_modify(struct file_lock **before, int arg, struct list_head *dispose) printk(KERN_ERR "locks_delete_lock: fasync == %p\n", fl->fl_fasync); fl->fl_fasync = NULL; } - locks_delete_lock(before, dispose); + locks_delete_lock_ctx(fl, &flctx->flc_lease_cnt, dispose); } return 0; } @@ -1329,25 +1355,24 @@ static bool past_time(unsigned long then) static void time_out_leases(struct inode *inode, struct list_head *dispose) { - struct file_lock **before; - struct file_lock *fl; + struct file_lock_context *ctx = inode->i_flctx; + struct file_lock *fl, *tmp; - lockdep_assert_held(&inode->i_lock); + lockdep_assert_held(&ctx->flc_lock); - before = &inode->i_flock; - while ((fl = *before) && IS_LEASE(fl) && lease_breaking(fl)) { + list_for_each_entry_safe(fl, tmp, &ctx->flc_lease, fl_list) { trace_time_out_leases(inode, fl); if (past_time(fl->fl_downgrade_time)) - lease_modify(before, F_RDLCK, dispose); + lease_modify(fl, F_RDLCK, dispose); if (past_time(fl->fl_break_time)) - lease_modify(before, F_UNLCK, dispose); - if (fl == *before) /* lease_modify may have freed fl */ - before = &fl->fl_next; + lease_modify(fl, F_UNLCK, dispose); } } static bool leases_conflict(struct file_lock *lease, struct file_lock *breaker) { + if ((breaker->fl_flags & FL_LAYOUT) != (lease->fl_flags & FL_LAYOUT)) + return false; if ((breaker->fl_flags & FL_DELEG) && (lease->fl_flags & FL_LEASE)) return false; return locks_conflict(breaker, lease); @@ -1356,11 +1381,12 @@ static bool leases_conflict(struct file_lock *lease, struct file_lock *breaker) static bool any_leases_conflict(struct inode *inode, struct file_lock *breaker) { + struct file_lock_context *ctx = inode->i_flctx; struct file_lock *fl; - lockdep_assert_held(&inode->i_lock); + lockdep_assert_held(&ctx->flc_lock); - for (fl = inode->i_flock ; fl && IS_LEASE(fl); fl = fl->fl_next) { + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { if (leases_conflict(fl, breaker)) return true; } @@ -1384,7 +1410,8 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) { int error = 0; struct file_lock *new_fl; - struct file_lock *fl, **before; + struct file_lock_context *ctx = inode->i_flctx; + struct file_lock *fl; unsigned long break_time; int want_write = (mode & O_ACCMODE) != O_RDONLY; LIST_HEAD(dispose); @@ -1394,7 +1421,13 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) return PTR_ERR(new_fl); new_fl->fl_flags = type; - spin_lock(&inode->i_lock); + /* typically we will check that ctx is non-NULL before calling */ + if (!ctx) { + WARN_ON_ONCE(1); + return error; + } + + spin_lock(&ctx->flc_lock); time_out_leases(inode, &dispose); @@ -1408,9 +1441,7 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) break_time++; /* so that 0 means no break time */ } - for (before = &inode->i_flock; - ((fl = *before) != NULL) && IS_LEASE(fl); - before = &fl->fl_next) { + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { if (!leases_conflict(fl, new_fl)) continue; if (want_write) { @@ -1419,17 +1450,17 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) fl->fl_flags |= FL_UNLOCK_PENDING; fl->fl_break_time = break_time; } else { - if (lease_breaking(inode->i_flock)) + if (lease_breaking(fl)) continue; fl->fl_flags |= FL_DOWNGRADE_PENDING; fl->fl_downgrade_time = break_time; } if (fl->fl_lmops->lm_break(fl)) - locks_delete_lock(before, &dispose); + locks_delete_lock_ctx(fl, &ctx->flc_lease_cnt, + &dispose); } - fl = inode->i_flock; - if (!fl || !IS_LEASE(fl)) + if (list_empty(&ctx->flc_lease)) goto out; if (mode & O_NONBLOCK) { @@ -1439,18 +1470,19 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) } restart: - break_time = inode->i_flock->fl_break_time; + fl = list_first_entry(&ctx->flc_lease, struct file_lock, fl_list); + break_time = fl->fl_break_time; if (break_time != 0) break_time -= jiffies; if (break_time == 0) break_time++; - locks_insert_block(inode->i_flock, new_fl); + locks_insert_block(fl, new_fl); trace_break_lease_block(inode, new_fl); - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); locks_dispose_list(&dispose); error = wait_event_interruptible_timeout(new_fl->fl_wait, !new_fl->fl_next, break_time); - spin_lock(&inode->i_lock); + spin_lock(&ctx->flc_lock); trace_break_lease_unblock(inode, new_fl); locks_delete_block(new_fl); if (error >= 0) { @@ -1462,12 +1494,10 @@ restart: time_out_leases(inode, &dispose); if (any_leases_conflict(inode, new_fl)) goto restart; - error = 0; } - out: - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); locks_dispose_list(&dispose); locks_free_lock(new_fl); return error; @@ -1487,14 +1517,18 @@ EXPORT_SYMBOL(__break_lease); void lease_get_mtime(struct inode *inode, struct timespec *time) { bool has_lease = false; - struct file_lock *flock; + struct file_lock_context *ctx = inode->i_flctx; + struct file_lock *fl; - if (inode->i_flock) { - spin_lock(&inode->i_lock); - flock = inode->i_flock; - if (flock && IS_LEASE(flock) && (flock->fl_type == F_WRLCK)) - has_lease = true; - spin_unlock(&inode->i_lock); + if (ctx && !list_empty_careful(&ctx->flc_lease)) { + spin_lock(&ctx->flc_lock); + if (!list_empty(&ctx->flc_lease)) { + fl = list_first_entry(&ctx->flc_lease, + struct file_lock, fl_list); + if (fl->fl_type == F_WRLCK) + has_lease = true; + } + spin_unlock(&ctx->flc_lock); } if (has_lease) @@ -1532,20 +1566,22 @@ int fcntl_getlease(struct file *filp) { struct file_lock *fl; struct inode *inode = file_inode(filp); + struct file_lock_context *ctx = inode->i_flctx; int type = F_UNLCK; LIST_HEAD(dispose); - spin_lock(&inode->i_lock); - time_out_leases(file_inode(filp), &dispose); - for (fl = file_inode(filp)->i_flock; fl && IS_LEASE(fl); - fl = fl->fl_next) { - if (fl->fl_file == filp) { + if (ctx && !list_empty_careful(&ctx->flc_lease)) { + spin_lock(&ctx->flc_lock); + time_out_leases(file_inode(filp), &dispose); + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { + if (fl->fl_file != filp) + continue; type = target_leasetype(fl); break; } + spin_unlock(&ctx->flc_lock); + locks_dispose_list(&dispose); } - spin_unlock(&inode->i_lock); - locks_dispose_list(&dispose); return type; } @@ -1560,11 +1596,14 @@ int fcntl_getlease(struct file *filp) * conflict with the lease we're trying to set. */ static int -check_conflicting_open(const struct dentry *dentry, const long arg) +check_conflicting_open(const struct dentry *dentry, const long arg, int flags) { int ret = 0; struct inode *inode = dentry->d_inode; + if (flags & FL_LAYOUT) + return 0; + if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0)) return -EAGAIN; @@ -1578,9 +1617,10 @@ check_conflicting_open(const struct dentry *dentry, const long arg) static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **priv) { - struct file_lock *fl, **before, **my_before = NULL, *lease; + struct file_lock *fl, *my_fl = NULL, *lease; struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; + struct file_lock_context *ctx; bool is_deleg = (*flp)->fl_flags & FL_DELEG; int error; LIST_HEAD(dispose); @@ -1588,6 +1628,10 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr lease = *flp; trace_generic_add_lease(inode, lease); + ctx = locks_get_lock_context(inode); + if (!ctx) + return -ENOMEM; + /* * In the delegation case we need mutual exclusion with * a number of operations that take the i_mutex. We trylock @@ -1606,9 +1650,9 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr return -EINVAL; } - spin_lock(&inode->i_lock); + spin_lock(&ctx->flc_lock); time_out_leases(inode, &dispose); - error = check_conflicting_open(dentry, arg); + error = check_conflicting_open(dentry, arg, lease->fl_flags); if (error) goto out; @@ -1621,13 +1665,13 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr * except for this filp. */ error = -EAGAIN; - for (before = &inode->i_flock; - ((fl = *before) != NULL) && IS_LEASE(fl); - before = &fl->fl_next) { - if (fl->fl_file == filp) { - my_before = before; + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { + if (fl->fl_file == filp && + fl->fl_owner == lease->fl_owner) { + my_fl = fl; continue; } + /* * No exclusive leases if someone else has a lease on * this file: @@ -1642,9 +1686,8 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr goto out; } - if (my_before != NULL) { - lease = *my_before; - error = lease->fl_lmops->lm_change(my_before, arg, &dispose); + if (my_fl != NULL) { + error = lease->fl_lmops->lm_change(my_fl, arg, &dispose); if (error) goto out; goto out_setup; @@ -1654,7 +1697,7 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr if (!leases_enable) goto out; - locks_insert_lock(before, lease); + locks_insert_lock_ctx(lease, &ctx->flc_lease_cnt, &ctx->flc_lease); /* * The check in break_lease() is lockless. It's possible for another * open to race in after we did the earlier check for a conflicting @@ -1665,46 +1708,51 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr * precedes these checks. */ smp_mb(); - error = check_conflicting_open(dentry, arg); - if (error) - goto out_unlink; + error = check_conflicting_open(dentry, arg, lease->fl_flags); + if (error) { + locks_unlink_lock_ctx(lease, &ctx->flc_lease_cnt); + goto out; + } out_setup: if (lease->fl_lmops->lm_setup) lease->fl_lmops->lm_setup(lease, priv); out: - spin_unlock(&inode->i_lock); + spin_unlock(&ctx->flc_lock); locks_dispose_list(&dispose); if (is_deleg) mutex_unlock(&inode->i_mutex); - if (!error && !my_before) + if (!error && !my_fl) *flp = NULL; return error; -out_unlink: - locks_unlink_lock(before); - goto out; } -static int generic_delete_lease(struct file *filp) +static int generic_delete_lease(struct file *filp, void *owner) { int error = -EAGAIN; - struct file_lock *fl, **before; + struct file_lock *fl, *victim = NULL; struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; + struct file_lock_context *ctx = inode->i_flctx; LIST_HEAD(dispose); - spin_lock(&inode->i_lock); - time_out_leases(inode, &dispose); - for (before = &inode->i_flock; - ((fl = *before) != NULL) && IS_LEASE(fl); - before = &fl->fl_next) { - if (fl->fl_file == filp) + if (!ctx) { + trace_generic_delete_lease(inode, NULL); + return error; + } + + spin_lock(&ctx->flc_lock); + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { + if (fl->fl_file == filp && + fl->fl_owner == owner) { + victim = fl; break; + } } trace_generic_delete_lease(inode, fl); - if (fl && IS_LEASE(fl)) - error = fl->fl_lmops->lm_change(before, F_UNLCK, &dispose); - spin_unlock(&inode->i_lock); + if (victim) + error = fl->fl_lmops->lm_change(victim, F_UNLCK, &dispose); + spin_unlock(&ctx->flc_lock); locks_dispose_list(&dispose); return error; } @@ -1737,13 +1785,14 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp, switch (arg) { case F_UNLCK: - return generic_delete_lease(filp); + return generic_delete_lease(filp, *priv); case F_RDLCK: case F_WRLCK: if (!(*flp)->fl_lmops->lm_break) { WARN_ON_ONCE(1); return -ENOLCK; } + return generic_add_lease(filp, arg, flp, priv); default: return -EINVAL; @@ -1816,7 +1865,7 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) int fcntl_setlease(unsigned int fd, struct file *filp, long arg) { if (arg == F_UNLCK) - return vfs_setlease(filp, F_UNLCK, NULL, NULL); + return vfs_setlease(filp, F_UNLCK, NULL, (void **)&filp); return do_fcntl_add_lease(fd, filp, arg); } @@ -2171,7 +2220,7 @@ again: */ /* * we need that spin_lock here - it prevents reordering between - * update of inode->i_flock and check for it done in close(). + * update of i_flctx->flc_posix and check for it done in close(). * rcu_read_lock() wouldn't do. */ spin_lock(¤t->files->file_lock); @@ -2331,13 +2380,14 @@ out: void locks_remove_posix(struct file *filp, fl_owner_t owner) { struct file_lock lock; + struct file_lock_context *ctx = file_inode(filp)->i_flctx; /* * If there are no locks held on this file, we don't need to call * posix_lock_file(). Another process could be setting a lock on this * file at the same time, but we wouldn't remove that lock anyway. */ - if (!file_inode(filp)->i_flock) + if (!ctx || list_empty(&ctx->flc_posix)) return; lock.fl_type = F_UNLCK; @@ -2358,67 +2408,67 @@ void locks_remove_posix(struct file *filp, fl_owner_t owner) EXPORT_SYMBOL(locks_remove_posix); +/* The i_flctx must be valid when calling into here */ +static void +locks_remove_flock(struct file *filp) +{ + struct file_lock fl = { + .fl_owner = filp, + .fl_pid = current->tgid, + .fl_file = filp, + .fl_flags = FL_FLOCK, + .fl_type = F_UNLCK, + .fl_end = OFFSET_MAX, + }; + struct file_lock_context *flctx = file_inode(filp)->i_flctx; + + if (list_empty(&flctx->flc_flock)) + return; + + if (filp->f_op->flock) + filp->f_op->flock(filp, F_SETLKW, &fl); + else + flock_lock_file(filp, &fl); + + if (fl.fl_ops && fl.fl_ops->fl_release_private) + fl.fl_ops->fl_release_private(&fl); +} + +/* The i_flctx must be valid when calling into here */ +static void +locks_remove_lease(struct file *filp) +{ + struct inode *inode = file_inode(filp); + struct file_lock_context *ctx = inode->i_flctx; + struct file_lock *fl, *tmp; + LIST_HEAD(dispose); + + if (list_empty(&ctx->flc_lease)) + return; + + spin_lock(&ctx->flc_lock); + list_for_each_entry_safe(fl, tmp, &ctx->flc_lease, fl_list) + lease_modify(fl, F_UNLCK, &dispose); + spin_unlock(&ctx->flc_lock); + locks_dispose_list(&dispose); +} + /* * This function is called on the last close of an open file. */ void locks_remove_file(struct file *filp) { - struct inode * inode = file_inode(filp); - struct file_lock *fl; - struct file_lock **before; - LIST_HEAD(dispose); - - if (!inode->i_flock) + if (!file_inode(filp)->i_flctx) return; + /* remove any OFD locks */ locks_remove_posix(filp, filp); - if (filp->f_op->flock) { - struct file_lock fl = { - .fl_owner = filp, - .fl_pid = current->tgid, - .fl_file = filp, - .fl_flags = FL_FLOCK, - .fl_type = F_UNLCK, - .fl_end = OFFSET_MAX, - }; - filp->f_op->flock(filp, F_SETLKW, &fl); - if (fl.fl_ops && fl.fl_ops->fl_release_private) - fl.fl_ops->fl_release_private(&fl); - } - - spin_lock(&inode->i_lock); - before = &inode->i_flock; - - while ((fl = *before) != NULL) { - if (fl->fl_file == filp) { - if (IS_LEASE(fl)) { - lease_modify(before, F_UNLCK, &dispose); - continue; - } - - /* - * There's a leftover lock on the list of a type that - * we didn't expect to see. Most likely a classic - * POSIX lock that ended up not getting released - * properly, or that raced onto the list somehow. Log - * some info about it and then just remove it from - * the list. - */ - WARN(!IS_FLOCK(fl), - "leftover lock: dev=%u:%u ino=%lu type=%hhd flags=0x%x start=%lld end=%lld\n", - MAJOR(inode->i_sb->s_dev), - MINOR(inode->i_sb->s_dev), inode->i_ino, - fl->fl_type, fl->fl_flags, - fl->fl_start, fl->fl_end); + /* remove flock locks */ + locks_remove_flock(filp); - locks_delete_lock(before, &dispose); - continue; - } - before = &fl->fl_next; - } - spin_unlock(&inode->i_lock); - locks_dispose_list(&dispose); + /* remove any leases */ + locks_remove_lease(filp); } /** @@ -2621,6 +2671,9 @@ static int __init filelock_init(void) { int i; + flctx_cache = kmem_cache_create("file_lock_ctx", + sizeof(struct file_lock_context), 0, SLAB_PANIC, NULL); + filelock_cache = kmem_cache_create("file_lock_cache", sizeof(struct file_lock), 0, SLAB_PANIC, NULL); diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index 3dece03..c7abc10 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -128,6 +128,11 @@ config PNFS_OBJLAYOUT depends on NFS_V4_1 && SCSI_OSD_ULD default NFS_V4 +config PNFS_FLEXFILE_LAYOUT + tristate + depends on NFS_V4_1 && NFS_V3 + default m + config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN string "NFSv4.1 Implementation ID Domain" depends on NFS_V4_1 diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile index 04cb830..1e987ac 100644 --- a/fs/nfs/Makefile +++ b/fs/nfs/Makefile @@ -27,9 +27,10 @@ nfsv4-y := nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o nfs4super.o nfs4file.o dns_resolve.o nfs4trace.o nfsv4-$(CONFIG_NFS_USE_LEGACY_DNS) += cache_lib.o nfsv4-$(CONFIG_SYSCTL) += nfs4sysctl.o -nfsv4-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o +nfsv4-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o pnfs_nfs.o nfsv4-$(CONFIG_NFS_V4_2) += nfs42proc.o obj-$(CONFIG_PNFS_FILE_LAYOUT) += filelayout/ obj-$(CONFIG_PNFS_OBJLAYOUT) += objlayout/ obj-$(CONFIG_PNFS_BLOCK) += blocklayout/ +obj-$(CONFIG_PNFS_FLEXFILE_LAYOUT) += flexfilelayout/ diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 77fec6a..1cac3c1 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -860,12 +860,14 @@ static const struct nfs_pageio_ops bl_pg_read_ops = { .pg_init = bl_pg_init_read, .pg_test = bl_pg_test_read, .pg_doio = pnfs_generic_pg_readpages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static const struct nfs_pageio_ops bl_pg_write_ops = { .pg_init = bl_pg_init_write, .pg_test = bl_pg_test_write, .pg_doio = pnfs_generic_pg_writepages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static struct pnfs_layoutdriver_type blocklayout_type = { diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index b8fb3a4..351be920 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -128,22 +128,24 @@ nfs41_callback_svc(void *vrqstp) if (try_to_freeze()) continue; - prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE); + prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_UNINTERRUPTIBLE); spin_lock_bh(&serv->sv_cb_lock); if (!list_empty(&serv->sv_cb_list)) { req = list_first_entry(&serv->sv_cb_list, struct rpc_rqst, rq_bc_list); list_del(&req->rq_bc_list); spin_unlock_bh(&serv->sv_cb_lock); + finish_wait(&serv->sv_cb_waitq, &wq); dprintk("Invoking bc_svc_process()\n"); error = bc_svc_process(serv, req, rqstp); dprintk("bc_svc_process() returned w/ error code= %d\n", error); } else { spin_unlock_bh(&serv->sv_cb_lock); - schedule(); + /* schedule_timeout to game the hung task watchdog */ + schedule_timeout(60 * HZ); + finish_wait(&serv->sv_cb_waitq, &wq); } - finish_wait(&serv->sv_cb_waitq, &wq); } return 0; } diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 7f3f606..da54332 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -85,25 +85,30 @@ static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_ { struct inode *inode = state->inode; struct file_lock *fl; + struct file_lock_context *flctx = inode->i_flctx; + struct list_head *list; int status = 0; - if (inode->i_flock == NULL) + if (flctx == NULL) goto out; - /* Protect inode->i_flock using the i_lock */ - spin_lock(&inode->i_lock); - for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) { - if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK))) - continue; + list = &flctx->flc_posix; + spin_lock(&flctx->flc_lock); +restart: + list_for_each_entry(fl, list, fl_list) { if (nfs_file_open_context(fl->fl_file) != ctx) continue; - spin_unlock(&inode->i_lock); + spin_unlock(&flctx->flc_lock); status = nfs4_lock_delegation_recall(fl, state, stateid); if (status < 0) goto out; - spin_lock(&inode->i_lock); + spin_lock(&flctx->flc_lock); } - spin_unlock(&inode->i_lock); + if (list == &flctx->flc_posix) { + list = &flctx->flc_flock; + goto restart; + } + spin_unlock(&flctx->flc_lock); out: return status; } @@ -301,6 +306,17 @@ nfs_inode_detach_delegation(struct inode *inode) return nfs_detach_delegation(nfsi, delegation, server); } +static void +nfs_update_inplace_delegation(struct nfs_delegation *delegation, + const struct nfs_delegation *update) +{ + if (nfs4_stateid_is_newer(&update->stateid, &delegation->stateid)) { + delegation->stateid.seqid = update->stateid.seqid; + smp_wmb(); + delegation->type = update->type; + } +} + /** * nfs_inode_set_delegation - set up a delegation on an inode * @inode: inode to which delegation applies @@ -334,9 +350,12 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct old_delegation = rcu_dereference_protected(nfsi->delegation, lockdep_is_held(&clp->cl_lock)); if (old_delegation != NULL) { - if (nfs4_stateid_match(&delegation->stateid, - &old_delegation->stateid) && - delegation->type == old_delegation->type) { + /* Is this an update of the existing delegation? */ + if (nfs4_stateid_match_other(&old_delegation->stateid, + &delegation->stateid)) { + nfs_update_inplace_delegation(old_delegation, + delegation); + nfsi->delegation_state = old_delegation->type; goto out; } /* diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 10bf072..7077521 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -66,6 +66,10 @@ static struct kmem_cache *nfs_direct_cachep; /* * This represents a set of asynchronous requests that we're waiting on */ +struct nfs_direct_mirror { + ssize_t count; +}; + struct nfs_direct_req { struct kref kref; /* release manager */ @@ -78,8 +82,13 @@ struct nfs_direct_req { /* completion state */ atomic_t io_count; /* i/os we're waiting for */ spinlock_t lock; /* protect completion state */ + + struct nfs_direct_mirror mirrors[NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX]; + int mirror_count; + ssize_t count, /* bytes actually processed */ bytes_left, /* bytes left to be sent */ + io_start, /* start of IO */ error; /* any reported error */ struct completion completion; /* wait for i/o completion */ @@ -108,26 +117,56 @@ static inline int put_dreq(struct nfs_direct_req *dreq) return atomic_dec_and_test(&dreq->io_count); } +void nfs_direct_set_resched_writes(struct nfs_direct_req *dreq) +{ + dreq->flags = NFS_ODIRECT_RESCHED_WRITES; +} +EXPORT_SYMBOL_GPL(nfs_direct_set_resched_writes); + +static void +nfs_direct_good_bytes(struct nfs_direct_req *dreq, struct nfs_pgio_header *hdr) +{ + int i; + ssize_t count; + + WARN_ON_ONCE(hdr->pgio_mirror_idx >= dreq->mirror_count); + + count = dreq->mirrors[hdr->pgio_mirror_idx].count; + if (count + dreq->io_start < hdr->io_start + hdr->good_bytes) { + count = hdr->io_start + hdr->good_bytes - dreq->io_start; + dreq->mirrors[hdr->pgio_mirror_idx].count = count; + } + + /* update the dreq->count by finding the minimum agreed count from all + * mirrors */ + count = dreq->mirrors[0].count; + + for (i = 1; i < dreq->mirror_count; i++) + count = min(count, dreq->mirrors[i].count); + + dreq->count = count; +} + /* * nfs_direct_select_verf - select the right verifier * @dreq - direct request possibly spanning multiple servers * @ds_clp - nfs_client of data server or NULL if MDS / non-pnfs - * @ds_idx - index of data server in data server list, only valid if ds_clp set + * @commit_idx - commit bucket index for the DS * * returns the correct verifier to use given the role of the server */ static struct nfs_writeverf * nfs_direct_select_verf(struct nfs_direct_req *dreq, struct nfs_client *ds_clp, - int ds_idx) + int commit_idx) { struct nfs_writeverf *verfp = &dreq->verf; #ifdef CONFIG_NFS_V4_1 if (ds_clp) { /* pNFS is in use, use the DS verf */ - if (ds_idx >= 0 && ds_idx < dreq->ds_cinfo.nbuckets) - verfp = &dreq->ds_cinfo.buckets[ds_idx].direct_verf; + if (commit_idx >= 0 && commit_idx < dreq->ds_cinfo.nbuckets) + verfp = &dreq->ds_cinfo.buckets[commit_idx].direct_verf; else WARN_ON_ONCE(1); } @@ -148,8 +187,7 @@ static void nfs_direct_set_hdr_verf(struct nfs_direct_req *dreq, { struct nfs_writeverf *verfp; - verfp = nfs_direct_select_verf(dreq, hdr->ds_clp, - hdr->ds_idx); + verfp = nfs_direct_select_verf(dreq, hdr->ds_clp, hdr->ds_commit_idx); WARN_ON_ONCE(verfp->committed >= 0); memcpy(verfp, &hdr->verf, sizeof(struct nfs_writeverf)); WARN_ON_ONCE(verfp->committed < 0); @@ -169,8 +207,7 @@ static int nfs_direct_set_or_cmp_hdr_verf(struct nfs_direct_req *dreq, { struct nfs_writeverf *verfp; - verfp = nfs_direct_select_verf(dreq, hdr->ds_clp, - hdr->ds_idx); + verfp = nfs_direct_select_verf(dreq, hdr->ds_clp, hdr->ds_commit_idx); if (verfp->committed < 0) { nfs_direct_set_hdr_verf(dreq, hdr); return 0; @@ -193,7 +230,11 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, verfp = nfs_direct_select_verf(dreq, data->ds_clp, data->ds_commit_index); - WARN_ON_ONCE(verfp->committed < 0); + + /* verifier not set so always fail */ + if (verfp->committed < 0) + return 1; + return memcmp(verfp, &data->verf, sizeof(struct nfs_writeverf)); } @@ -212,6 +253,12 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, */ ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { + struct inode *inode = iocb->ki_filp->f_mapping->host; + + /* we only support swap file calling nfs_direct_IO */ + if (!IS_SWAPFILE(inode)) + return 0; + #ifndef CONFIG_NFS_SWAP dprintk("NFS: nfs_direct_IO (%pD) off/no(%Ld/%lu) EINVAL\n", iocb->ki_filp, (long long) pos, iter->nr_segs); @@ -243,6 +290,18 @@ void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, cinfo->completion_ops = &nfs_direct_commit_completion_ops; } +static inline void nfs_direct_setup_mirroring(struct nfs_direct_req *dreq, + struct nfs_pageio_descriptor *pgio, + struct nfs_page *req) +{ + int mirror_count = 1; + + if (pgio->pg_ops->pg_get_mirror_count) + mirror_count = pgio->pg_ops->pg_get_mirror_count(pgio, req); + + dreq->mirror_count = mirror_count; +} + static inline struct nfs_direct_req *nfs_direct_req_alloc(void) { struct nfs_direct_req *dreq; @@ -257,6 +316,7 @@ static inline struct nfs_direct_req *nfs_direct_req_alloc(void) INIT_LIST_HEAD(&dreq->mds_cinfo.list); dreq->verf.committed = NFS_INVALID_STABLE_HOW; /* not set yet */ INIT_WORK(&dreq->work, nfs_direct_write_schedule_work); + dreq->mirror_count = 1; spin_lock_init(&dreq->lock); return dreq; @@ -363,7 +423,8 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr) if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) && (hdr->good_bytes == 0)) dreq->error = hdr->error; else - dreq->count += hdr->good_bytes; + nfs_direct_good_bytes(dreq, hdr); + spin_unlock(&dreq->lock); while (!list_empty(&hdr->pages)) { @@ -541,6 +602,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter, dreq->inode = inode; dreq->bytes_left = count; + dreq->io_start = pos; dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); l_ctx = nfs_get_lock_context(dreq->ctx); if (IS_ERR(l_ctx)) { @@ -573,6 +635,20 @@ out: return result; } +static void +nfs_direct_write_scan_commit_list(struct inode *inode, + struct list_head *list, + struct nfs_commit_info *cinfo) +{ + spin_lock(cinfo->lock); +#ifdef CONFIG_NFS_V4_1 + if (cinfo->ds != NULL && cinfo->ds->nwritten != 0) + NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); +#endif + nfs_scan_commit_list(&cinfo->mds->list, list, cinfo, 0); + spin_unlock(cinfo->lock); +} + static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq) { struct nfs_pageio_descriptor desc; @@ -580,20 +656,23 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq) LIST_HEAD(reqs); struct nfs_commit_info cinfo; LIST_HEAD(failed); + int i; nfs_init_cinfo_from_dreq(&cinfo, dreq); - pnfs_recover_commit_reqs(dreq->inode, &reqs, &cinfo); - spin_lock(cinfo.lock); - nfs_scan_commit_list(&cinfo.mds->list, &reqs, &cinfo, 0); - spin_unlock(cinfo.lock); + nfs_direct_write_scan_commit_list(dreq->inode, &reqs, &cinfo); dreq->count = 0; + for (i = 0; i < dreq->mirror_count; i++) + dreq->mirrors[i].count = 0; get_dreq(dreq); nfs_pageio_init_write(&desc, dreq->inode, FLUSH_STABLE, false, &nfs_direct_write_completion_ops); desc.pg_dreq = dreq; + req = nfs_list_entry(reqs.next); + nfs_direct_setup_mirroring(dreq, &desc, req); + list_for_each_entry_safe(req, tmp, &reqs, wb_list) { if (!nfs_pageio_add_request(&desc, req)) { nfs_list_remove_request(req); @@ -640,7 +719,7 @@ static void nfs_direct_commit_complete(struct nfs_commit_data *data) nfs_list_remove_request(req); if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES) { /* Note the rewrite will go through mds */ - nfs_mark_request_commit(req, NULL, &cinfo); + nfs_mark_request_commit(req, NULL, &cinfo, 0); } else nfs_release_request(req); nfs_unlock_and_release_request(req); @@ -715,7 +794,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) dreq->error = hdr->error; } if (dreq->error == 0) { - dreq->count += hdr->good_bytes; + nfs_direct_good_bytes(dreq, hdr); if (nfs_write_need_commit(hdr)) { if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES) request_commit = true; @@ -739,7 +818,8 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) nfs_list_remove_request(req); if (request_commit) { kref_get(&req->wb_kref); - nfs_mark_request_commit(req, hdr->lseg, &cinfo); + nfs_mark_request_commit(req, hdr->lseg, &cinfo, + hdr->ds_commit_idx); } nfs_unlock_and_release_request(req); } @@ -820,6 +900,9 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, result = PTR_ERR(req); break; } + + nfs_direct_setup_mirroring(dreq, &desc, req); + nfs_lock_request(req); req->wb_index = pos >> PAGE_SHIFT; req->wb_offset = pos & ~PAGE_MASK; @@ -928,6 +1011,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, dreq->inode = inode; dreq->bytes_left = count; + dreq->io_start = pos; dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); l_ctx = nfs_get_lock_context(dreq->ctx); if (IS_ERR(l_ctx)) { diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 2ab6f00..94712fc 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -646,7 +646,6 @@ static const struct vm_operations_struct nfs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = nfs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int nfs_need_sync_write(struct file *filp, struct inode *inode) diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index 51aa889..7ae1c26 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -118,13 +118,6 @@ static void filelayout_reset_read(struct nfs_pgio_header *hdr) } } -static void filelayout_fenceme(struct inode *inode, struct pnfs_layout_hdr *lo) -{ - if (!test_and_clear_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) - return; - pnfs_return_layout(inode); -} - static int filelayout_async_handle_error(struct rpc_task *task, struct nfs4_state *state, struct nfs_client *clp, @@ -207,7 +200,7 @@ static int filelayout_async_handle_error(struct rpc_task *task, dprintk("%s DS connection error %d\n", __func__, task->tk_status); nfs4_mark_deviceid_unavailable(devid); - set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags); + pnfs_error_mark_layout_for_return(inode, lseg); rpc_wake_up(&tbl->slot_tbl_waitq); /* fall through */ default: @@ -339,16 +332,6 @@ static void filelayout_read_count_stats(struct rpc_task *task, void *data) rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics); } -static void filelayout_read_release(void *data) -{ - struct nfs_pgio_header *hdr = data; - struct pnfs_layout_hdr *lo = hdr->lseg->pls_layout; - - filelayout_fenceme(lo->plh_inode, lo); - nfs_put_client(hdr->ds_clp); - hdr->mds_ops->rpc_release(data); -} - static int filelayout_write_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) { @@ -371,17 +354,6 @@ static int filelayout_write_done_cb(struct rpc_task *task, return 0; } -/* Fake up some data that will cause nfs_commit_release to retry the writes. */ -static void prepare_to_resend_writes(struct nfs_commit_data *data) -{ - struct nfs_page *first = nfs_list_entry(data->pages.next); - - data->task.tk_status = 0; - memcpy(&data->verf.verifier, &first->wb_verf, - sizeof(data->verf.verifier)); - data->verf.verifier.data[0]++; /* ensure verifier mismatch */ -} - static int filelayout_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) { @@ -393,7 +365,7 @@ static int filelayout_commit_done_cb(struct rpc_task *task, switch (err) { case -NFS4ERR_RESET_TO_MDS: - prepare_to_resend_writes(data); + pnfs_generic_prepare_to_resend_writes(data); return -EAGAIN; case -EAGAIN: rpc_restart_call_prepare(task); @@ -451,16 +423,6 @@ static void filelayout_write_count_stats(struct rpc_task *task, void *data) rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics); } -static void filelayout_write_release(void *data) -{ - struct nfs_pgio_header *hdr = data; - struct pnfs_layout_hdr *lo = hdr->lseg->pls_layout; - - filelayout_fenceme(lo->plh_inode, lo); - nfs_put_client(hdr->ds_clp); - hdr->mds_ops->rpc_release(data); -} - static void filelayout_commit_prepare(struct rpc_task *task, void *data) { struct nfs_commit_data *wdata = data; @@ -471,14 +433,6 @@ static void filelayout_commit_prepare(struct rpc_task *task, void *data) task); } -static void filelayout_write_commit_done(struct rpc_task *task, void *data) -{ - struct nfs_commit_data *wdata = data; - - /* Note this may cause RPC to be resent */ - wdata->mds_ops->rpc_call_done(task, data); -} - static void filelayout_commit_count_stats(struct rpc_task *task, void *data) { struct nfs_commit_data *cdata = data; @@ -486,35 +440,25 @@ static void filelayout_commit_count_stats(struct rpc_task *task, void *data) rpc_count_iostats(task, NFS_SERVER(cdata->inode)->client->cl_metrics); } -static void filelayout_commit_release(void *calldata) -{ - struct nfs_commit_data *data = calldata; - - data->completion_ops->completion(data); - pnfs_put_lseg(data->lseg); - nfs_put_client(data->ds_clp); - nfs_commitdata_release(data); -} - static const struct rpc_call_ops filelayout_read_call_ops = { .rpc_call_prepare = filelayout_read_prepare, .rpc_call_done = filelayout_read_call_done, .rpc_count_stats = filelayout_read_count_stats, - .rpc_release = filelayout_read_release, + .rpc_release = pnfs_generic_rw_release, }; static const struct rpc_call_ops filelayout_write_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, .rpc_count_stats = filelayout_write_count_stats, - .rpc_release = filelayout_write_release, + .rpc_release = pnfs_generic_rw_release, }; static const struct rpc_call_ops filelayout_commit_call_ops = { .rpc_call_prepare = filelayout_commit_prepare, - .rpc_call_done = filelayout_write_commit_done, + .rpc_call_done = pnfs_generic_write_commit_done, .rpc_count_stats = filelayout_commit_count_stats, - .rpc_release = filelayout_commit_release, + .rpc_release = pnfs_generic_commit_release, }; static enum pnfs_try_status @@ -548,7 +492,7 @@ filelayout_read_pagelist(struct nfs_pgio_header *hdr) /* No multipath support. Use first DS */ atomic_inc(&ds->ds_clp->cl_count); hdr->ds_clp = ds->ds_clp; - hdr->ds_idx = idx; + hdr->ds_commit_idx = idx; fh = nfs4_fl_select_ds_fh(lseg, j); if (fh) hdr->args.fh = fh; @@ -557,8 +501,9 @@ filelayout_read_pagelist(struct nfs_pgio_header *hdr) hdr->mds_offset = offset; /* Perform an asynchronous read to ds */ - nfs_initiate_pgio(ds_clnt, hdr, - &filelayout_read_call_ops, 0, RPC_TASK_SOFTCONN); + nfs_initiate_pgio(ds_clnt, hdr, hdr->cred, + NFS_PROTO(hdr->inode), &filelayout_read_call_ops, + 0, RPC_TASK_SOFTCONN); return PNFS_ATTEMPTED; } @@ -591,16 +536,16 @@ filelayout_write_pagelist(struct nfs_pgio_header *hdr, int sync) hdr->pgio_done_cb = filelayout_write_done_cb; atomic_inc(&ds->ds_clp->cl_count); hdr->ds_clp = ds->ds_clp; - hdr->ds_idx = idx; + hdr->ds_commit_idx = idx; fh = nfs4_fl_select_ds_fh(lseg, j); if (fh) hdr->args.fh = fh; hdr->args.offset = filelayout_get_dserver_offset(lseg, offset); /* Perform an asynchronous write */ - nfs_initiate_pgio(ds_clnt, hdr, - &filelayout_write_call_ops, sync, - RPC_TASK_SOFTCONN); + nfs_initiate_pgio(ds_clnt, hdr, hdr->cred, + NFS_PROTO(hdr->inode), &filelayout_write_call_ops, + sync, RPC_TASK_SOFTCONN); return PNFS_ATTEMPTED; } @@ -988,12 +933,14 @@ static const struct nfs_pageio_ops filelayout_pg_read_ops = { .pg_init = filelayout_pg_init_read, .pg_test = filelayout_pg_test, .pg_doio = pnfs_generic_pg_readpages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static const struct nfs_pageio_ops filelayout_pg_write_ops = { .pg_init = filelayout_pg_init_write, .pg_test = filelayout_pg_test, .pg_doio = pnfs_generic_pg_writepages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) @@ -1004,37 +951,11 @@ static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) return j; } -/* The generic layer is about to remove the req from the commit list. - * If this will make the bucket empty, it will need to put the lseg reference. - * Note this is must be called holding the inode (/cinfo) lock - */ -static void -filelayout_clear_request_commit(struct nfs_page *req, - struct nfs_commit_info *cinfo) -{ - struct pnfs_layout_segment *freeme = NULL; - - if (!test_and_clear_bit(PG_COMMIT_TO_DS, &req->wb_flags)) - goto out; - cinfo->ds->nwritten--; - if (list_is_singular(&req->wb_list)) { - struct pnfs_commit_bucket *bucket; - - bucket = list_first_entry(&req->wb_list, - struct pnfs_commit_bucket, - written); - freeme = bucket->wlseg; - bucket->wlseg = NULL; - } -out: - nfs_request_remove_commit_list(req, cinfo); - pnfs_put_lseg_locked(freeme); -} - static void filelayout_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) + struct nfs_commit_info *cinfo, + u32 ds_commit_idx) { struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); @@ -1064,7 +985,7 @@ filelayout_mark_request_commit(struct nfs_page *req, * is normally transferred to the COMMIT call and released * there. It could also be released if the last req is pulled * off due to a rewrite, in which case it will be done in - * filelayout_clear_request_commit + * pnfs_generic_clear_request_commit */ buckets[i].wlseg = pnfs_get_lseg(lseg); } @@ -1138,101 +1059,15 @@ static int filelayout_initiate_commit(struct nfs_commit_data *data, int how) fh = select_ds_fh_from_commit(lseg, data->ds_commit_index); if (fh) data->args.fh = fh; - return nfs_initiate_commit(ds_clnt, data, + return nfs_initiate_commit(ds_clnt, data, NFS_PROTO(data->inode), &filelayout_commit_call_ops, how, RPC_TASK_SOFTCONN); out_err: - prepare_to_resend_writes(data); - filelayout_commit_release(data); + pnfs_generic_prepare_to_resend_writes(data); + pnfs_generic_commit_release(data); return -EAGAIN; } -static int -transfer_commit_list(struct list_head *src, struct list_head *dst, - struct nfs_commit_info *cinfo, int max) -{ - struct nfs_page *req, *tmp; - int ret = 0; - - list_for_each_entry_safe(req, tmp, src, wb_list) { - if (!nfs_lock_request(req)) - continue; - kref_get(&req->wb_kref); - if (cond_resched_lock(cinfo->lock)) - list_safe_reset_next(req, tmp, wb_list); - nfs_request_remove_commit_list(req, cinfo); - clear_bit(PG_COMMIT_TO_DS, &req->wb_flags); - nfs_list_add_request(req, dst); - ret++; - if ((ret == max) && !cinfo->dreq) - break; - } - return ret; -} - -/* Note called with cinfo->lock held. */ -static int -filelayout_scan_ds_commit_list(struct pnfs_commit_bucket *bucket, - struct nfs_commit_info *cinfo, - int max) -{ - struct list_head *src = &bucket->written; - struct list_head *dst = &bucket->committing; - int ret; - - ret = transfer_commit_list(src, dst, cinfo, max); - if (ret) { - cinfo->ds->nwritten -= ret; - cinfo->ds->ncommitting += ret; - bucket->clseg = bucket->wlseg; - if (list_empty(src)) - bucket->wlseg = NULL; - else - pnfs_get_lseg(bucket->clseg); - } - return ret; -} - -/* Move reqs from written to committing lists, returning count of number moved. - * Note called with cinfo->lock held. - */ -static int filelayout_scan_commit_lists(struct nfs_commit_info *cinfo, - int max) -{ - int i, rv = 0, cnt; - - for (i = 0; i < cinfo->ds->nbuckets && max != 0; i++) { - cnt = filelayout_scan_ds_commit_list(&cinfo->ds->buckets[i], - cinfo, max); - max -= cnt; - rv += cnt; - } - return rv; -} - -/* Pull everything off the committing lists and dump into @dst */ -static void filelayout_recover_commit_reqs(struct list_head *dst, - struct nfs_commit_info *cinfo) -{ - struct pnfs_commit_bucket *b; - struct pnfs_layout_segment *freeme; - int i; - -restart: - spin_lock(cinfo->lock); - for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { - if (transfer_commit_list(&b->written, dst, cinfo, 0)) { - freeme = b->wlseg; - b->wlseg = NULL; - spin_unlock(cinfo->lock); - pnfs_put_lseg(freeme); - goto restart; - } - } - cinfo->ds->nwritten = 0; - spin_unlock(cinfo->lock); -} - /* filelayout_search_commit_reqs - Search lists in @cinfo for the head reqest * for @page * @cinfo - commit info for current inode @@ -1263,108 +1098,14 @@ filelayout_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page) return NULL; } -static void filelayout_retry_commit(struct nfs_commit_info *cinfo, int idx) -{ - struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; - struct pnfs_commit_bucket *bucket; - struct pnfs_layout_segment *freeme; - int i; - - for (i = idx; i < fl_cinfo->nbuckets; i++) { - bucket = &fl_cinfo->buckets[i]; - if (list_empty(&bucket->committing)) - continue; - nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo); - spin_lock(cinfo->lock); - freeme = bucket->clseg; - bucket->clseg = NULL; - spin_unlock(cinfo->lock); - pnfs_put_lseg(freeme); - } -} - -static unsigned int -alloc_ds_commits(struct nfs_commit_info *cinfo, struct list_head *list) -{ - struct pnfs_ds_commit_info *fl_cinfo; - struct pnfs_commit_bucket *bucket; - struct nfs_commit_data *data; - int i; - unsigned int nreq = 0; - - fl_cinfo = cinfo->ds; - bucket = fl_cinfo->buckets; - for (i = 0; i < fl_cinfo->nbuckets; i++, bucket++) { - if (list_empty(&bucket->committing)) - continue; - data = nfs_commitdata_alloc(); - if (!data) - break; - data->ds_commit_index = i; - spin_lock(cinfo->lock); - data->lseg = bucket->clseg; - bucket->clseg = NULL; - spin_unlock(cinfo->lock); - list_add(&data->pages, list); - nreq++; - } - - /* Clean up on error */ - filelayout_retry_commit(cinfo, i); - /* Caller will clean up entries put on list */ - return nreq; -} - -/* This follows nfs_commit_list pretty closely */ static int filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, int how, struct nfs_commit_info *cinfo) { - struct nfs_commit_data *data, *tmp; - LIST_HEAD(list); - unsigned int nreq = 0; - - if (!list_empty(mds_pages)) { - data = nfs_commitdata_alloc(); - if (data != NULL) { - data->lseg = NULL; - list_add(&data->pages, &list); - nreq++; - } else { - nfs_retry_commit(mds_pages, NULL, cinfo); - filelayout_retry_commit(cinfo, 0); - cinfo->completion_ops->error_cleanup(NFS_I(inode)); - return -ENOMEM; - } - } - - nreq += alloc_ds_commits(cinfo, &list); - - if (nreq == 0) { - cinfo->completion_ops->error_cleanup(NFS_I(inode)); - goto out; - } - - atomic_add(nreq, &cinfo->mds->rpcs_out); - - list_for_each_entry_safe(data, tmp, &list, pages) { - list_del_init(&data->pages); - if (!data->lseg) { - nfs_init_commit(data, mds_pages, NULL, cinfo); - nfs_initiate_commit(NFS_CLIENT(inode), data, - data->mds_ops, how, 0); - } else { - struct pnfs_commit_bucket *buckets; - - buckets = cinfo->ds->buckets; - nfs_init_commit(data, &buckets[data->ds_commit_index].committing, data->lseg, cinfo); - filelayout_initiate_commit(data, how); - } - } -out: - cinfo->ds->ncommitting = 0; - return PNFS_ATTEMPTED; + return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo, + filelayout_initiate_commit); } + static struct nfs4_deviceid_node * filelayout_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, gfp_t gfp_flags) @@ -1421,9 +1162,9 @@ static struct pnfs_layoutdriver_type filelayout_type = { .pg_write_ops = &filelayout_pg_write_ops, .get_ds_info = &filelayout_get_ds_info, .mark_request_commit = filelayout_mark_request_commit, - .clear_request_commit = filelayout_clear_request_commit, - .scan_commit_lists = filelayout_scan_commit_lists, - .recover_commit_reqs = filelayout_recover_commit_reqs, + .clear_request_commit = pnfs_generic_clear_request_commit, + .scan_commit_lists = pnfs_generic_scan_commit_lists, + .recover_commit_reqs = pnfs_generic_recover_commit_reqs, .search_commit_reqs = filelayout_search_commit_reqs, .commit_pagelist = filelayout_commit_pagelist, .read_pagelist = filelayout_read_pagelist, diff --git a/fs/nfs/filelayout/filelayout.h b/fs/nfs/filelayout/filelayout.h index 7c9f800..2896cb8 100644 --- a/fs/nfs/filelayout/filelayout.h +++ b/fs/nfs/filelayout/filelayout.h @@ -33,13 +33,6 @@ #include "../pnfs.h" /* - * Default data server connection timeout and retrans vaules. - * Set by module paramters dataserver_timeo and dataserver_retrans. - */ -#define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ -#define NFS4_DEF_DS_RETRANS 5 - -/* * Field testing shows we need to support up to 4096 stripe indices. * We store each index as a u8 (u32 on the wire) to keep the memory footprint * reasonable. This in turn means we support a maximum of 256 @@ -48,32 +41,11 @@ #define NFS4_PNFS_MAX_STRIPE_CNT 4096 #define NFS4_PNFS_MAX_MULTI_CNT 256 /* 256 fit into a u8 stripe_index */ -/* error codes for internal use */ -#define NFS4ERR_RESET_TO_MDS 12001 - enum stripetype4 { STRIPE_SPARSE = 1, STRIPE_DENSE = 2 }; -/* Individual ip address */ -struct nfs4_pnfs_ds_addr { - struct sockaddr_storage da_addr; - size_t da_addrlen; - struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ - char *da_remotestr; /* human readable addr+port */ -}; - -struct nfs4_pnfs_ds { - struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ - char *ds_remotestr; /* comma sep list of addrs */ - struct list_head ds_addrs; - struct nfs_client *ds_clp; - atomic_t ds_count; - unsigned long ds_state; -#define NFS4DS_CONNECTING 0 /* ds is establishing connection */ -}; - struct nfs4_file_layout_dsaddr { struct nfs4_deviceid_node id_node; u32 stripe_count; @@ -119,17 +91,6 @@ FILELAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg) return &FILELAYOUT_LSEG(lseg)->dsaddr->id_node; } -static inline void -filelayout_mark_devid_invalid(struct nfs4_deviceid_node *node) -{ - u32 *p = (u32 *)&node->deviceid; - - printk(KERN_WARNING "NFS: Deviceid [%x%x%x%x] marked out of use.\n", - p[0], p[1], p[2], p[3]); - - set_bit(NFS_DEVICEID_INVALID, &node->flags); -} - static inline bool filelayout_test_devid_invalid(struct nfs4_deviceid_node *node) { @@ -142,7 +103,6 @@ filelayout_test_devid_unavailable(struct nfs4_deviceid_node *node); extern struct nfs_fh * nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j); -extern void print_ds(struct nfs4_pnfs_ds *ds); u32 nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset); u32 nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32 j); struct nfs4_pnfs_ds *nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, diff --git a/fs/nfs/filelayout/filelayoutdev.c b/fs/nfs/filelayout/filelayoutdev.c index bfecac7..4f372e2 100644 --- a/fs/nfs/filelayout/filelayoutdev.c +++ b/fs/nfs/filelayout/filelayoutdev.c @@ -31,7 +31,6 @@ #include <linux/nfs_fs.h> #include <linux/vmalloc.h> #include <linux/module.h> -#include <linux/sunrpc/addr.h> #include "../internal.h" #include "../nfs4session.h" @@ -42,183 +41,6 @@ static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO; static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS; -/* - * Data server cache - * - * Data servers can be mapped to different device ids. - * nfs4_pnfs_ds reference counting - * - set to 1 on allocation - * - incremented when a device id maps a data server already in the cache. - * - decremented when deviceid is removed from the cache. - */ -static DEFINE_SPINLOCK(nfs4_ds_cache_lock); -static LIST_HEAD(nfs4_data_server_cache); - -/* Debug routines */ -void -print_ds(struct nfs4_pnfs_ds *ds) -{ - if (ds == NULL) { - printk("%s NULL device\n", __func__); - return; - } - printk(" ds %s\n" - " ref count %d\n" - " client %p\n" - " cl_exchange_flags %x\n", - ds->ds_remotestr, - atomic_read(&ds->ds_count), ds->ds_clp, - ds->ds_clp ? ds->ds_clp->cl_exchange_flags : 0); -} - -static bool -same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) -{ - struct sockaddr_in *a, *b; - struct sockaddr_in6 *a6, *b6; - - if (addr1->sa_family != addr2->sa_family) - return false; - - switch (addr1->sa_family) { - case AF_INET: - a = (struct sockaddr_in *)addr1; - b = (struct sockaddr_in *)addr2; - - if (a->sin_addr.s_addr == b->sin_addr.s_addr && - a->sin_port == b->sin_port) - return true; - break; - - case AF_INET6: - a6 = (struct sockaddr_in6 *)addr1; - b6 = (struct sockaddr_in6 *)addr2; - - /* LINKLOCAL addresses must have matching scope_id */ - if (ipv6_addr_src_scope(&a6->sin6_addr) == - IPV6_ADDR_SCOPE_LINKLOCAL && - a6->sin6_scope_id != b6->sin6_scope_id) - return false; - - if (ipv6_addr_equal(&a6->sin6_addr, &b6->sin6_addr) && - a6->sin6_port == b6->sin6_port) - return true; - break; - - default: - dprintk("%s: unhandled address family: %u\n", - __func__, addr1->sa_family); - return false; - } - - return false; -} - -static bool -_same_data_server_addrs_locked(const struct list_head *dsaddrs1, - const struct list_head *dsaddrs2) -{ - struct nfs4_pnfs_ds_addr *da1, *da2; - - /* step through both lists, comparing as we go */ - for (da1 = list_first_entry(dsaddrs1, typeof(*da1), da_node), - da2 = list_first_entry(dsaddrs2, typeof(*da2), da_node); - da1 != NULL && da2 != NULL; - da1 = list_entry(da1->da_node.next, typeof(*da1), da_node), - da2 = list_entry(da2->da_node.next, typeof(*da2), da_node)) { - if (!same_sockaddr((struct sockaddr *)&da1->da_addr, - (struct sockaddr *)&da2->da_addr)) - return false; - } - if (da1 == NULL && da2 == NULL) - return true; - - return false; -} - -/* - * Lookup DS by addresses. nfs4_ds_cache_lock is held - */ -static struct nfs4_pnfs_ds * -_data_server_lookup_locked(const struct list_head *dsaddrs) -{ - struct nfs4_pnfs_ds *ds; - - list_for_each_entry(ds, &nfs4_data_server_cache, ds_node) - if (_same_data_server_addrs_locked(&ds->ds_addrs, dsaddrs)) - return ds; - return NULL; -} - -/* - * Create an rpc connection to the nfs4_pnfs_ds data server - * Currently only supports IPv4 and IPv6 addresses - */ -static int -nfs4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds) -{ - struct nfs_client *clp = ERR_PTR(-EIO); - struct nfs4_pnfs_ds_addr *da; - int status = 0; - - dprintk("--> %s DS %s au_flavor %d\n", __func__, ds->ds_remotestr, - mds_srv->nfs_client->cl_rpcclient->cl_auth->au_flavor); - - list_for_each_entry(da, &ds->ds_addrs, da_node) { - dprintk("%s: DS %s: trying address %s\n", - __func__, ds->ds_remotestr, da->da_remotestr); - - clp = nfs4_set_ds_client(mds_srv->nfs_client, - (struct sockaddr *)&da->da_addr, - da->da_addrlen, IPPROTO_TCP, - dataserver_timeo, dataserver_retrans); - if (!IS_ERR(clp)) - break; - } - - if (IS_ERR(clp)) { - status = PTR_ERR(clp); - goto out; - } - - status = nfs4_init_ds_session(clp, mds_srv->nfs_client->cl_lease_time); - if (status) - goto out_put; - - smp_wmb(); - ds->ds_clp = clp; - dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); -out: - return status; -out_put: - nfs_put_client(clp); - goto out; -} - -static void -destroy_ds(struct nfs4_pnfs_ds *ds) -{ - struct nfs4_pnfs_ds_addr *da; - - dprintk("--> %s\n", __func__); - ifdebug(FACILITY) - print_ds(ds); - - nfs_put_client(ds->ds_clp); - - while (!list_empty(&ds->ds_addrs)) { - da = list_first_entry(&ds->ds_addrs, - struct nfs4_pnfs_ds_addr, - da_node); - list_del_init(&da->da_node); - kfree(da->da_remotestr); - kfree(da); - } - - kfree(ds->ds_remotestr); - kfree(ds); -} - void nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr) { @@ -229,259 +51,13 @@ nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr) for (i = 0; i < dsaddr->ds_num; i++) { ds = dsaddr->ds_list[i]; - if (ds != NULL) { - if (atomic_dec_and_lock(&ds->ds_count, - &nfs4_ds_cache_lock)) { - list_del_init(&ds->ds_node); - spin_unlock(&nfs4_ds_cache_lock); - destroy_ds(ds); - } - } + if (ds != NULL) + nfs4_pnfs_ds_put(ds); } kfree(dsaddr->stripe_indices); kfree(dsaddr); } -/* - * Create a string with a human readable address and port to avoid - * complicated setup around many dprinks. - */ -static char * -nfs4_pnfs_remotestr(struct list_head *dsaddrs, gfp_t gfp_flags) -{ - struct nfs4_pnfs_ds_addr *da; - char *remotestr; - size_t len; - char *p; - - len = 3; /* '{', '}' and eol */ - list_for_each_entry(da, dsaddrs, da_node) { - len += strlen(da->da_remotestr) + 1; /* string plus comma */ - } - - remotestr = kzalloc(len, gfp_flags); - if (!remotestr) - return NULL; - - p = remotestr; - *(p++) = '{'; - len--; - list_for_each_entry(da, dsaddrs, da_node) { - size_t ll = strlen(da->da_remotestr); - - if (ll > len) - goto out_err; - - memcpy(p, da->da_remotestr, ll); - p += ll; - len -= ll; - - if (len < 1) - goto out_err; - (*p++) = ','; - len--; - } - if (len < 2) - goto out_err; - *(p++) = '}'; - *p = '\0'; - return remotestr; -out_err: - kfree(remotestr); - return NULL; -} - -static struct nfs4_pnfs_ds * -nfs4_pnfs_ds_add(struct list_head *dsaddrs, gfp_t gfp_flags) -{ - struct nfs4_pnfs_ds *tmp_ds, *ds = NULL; - char *remotestr; - - if (list_empty(dsaddrs)) { - dprintk("%s: no addresses defined\n", __func__); - goto out; - } - - ds = kzalloc(sizeof(*ds), gfp_flags); - if (!ds) - goto out; - - /* this is only used for debugging, so it's ok if its NULL */ - remotestr = nfs4_pnfs_remotestr(dsaddrs, gfp_flags); - - spin_lock(&nfs4_ds_cache_lock); - tmp_ds = _data_server_lookup_locked(dsaddrs); - if (tmp_ds == NULL) { - INIT_LIST_HEAD(&ds->ds_addrs); - list_splice_init(dsaddrs, &ds->ds_addrs); - ds->ds_remotestr = remotestr; - atomic_set(&ds->ds_count, 1); - INIT_LIST_HEAD(&ds->ds_node); - ds->ds_clp = NULL; - list_add(&ds->ds_node, &nfs4_data_server_cache); - dprintk("%s add new data server %s\n", __func__, - ds->ds_remotestr); - } else { - kfree(remotestr); - kfree(ds); - atomic_inc(&tmp_ds->ds_count); - dprintk("%s data server %s found, inc'ed ds_count to %d\n", - __func__, tmp_ds->ds_remotestr, - atomic_read(&tmp_ds->ds_count)); - ds = tmp_ds; - } - spin_unlock(&nfs4_ds_cache_lock); -out: - return ds; -} - -/* - * Currently only supports ipv4, ipv6 and one multi-path address. - */ -static struct nfs4_pnfs_ds_addr * -decode_ds_addr(struct net *net, struct xdr_stream *streamp, gfp_t gfp_flags) -{ - struct nfs4_pnfs_ds_addr *da = NULL; - char *buf, *portstr; - __be16 port; - int nlen, rlen; - int tmp[2]; - __be32 *p; - char *netid, *match_netid; - size_t len, match_netid_len; - char *startsep = ""; - char *endsep = ""; - - - /* r_netid */ - p = xdr_inline_decode(streamp, 4); - if (unlikely(!p)) - goto out_err; - nlen = be32_to_cpup(p++); - - p = xdr_inline_decode(streamp, nlen); - if (unlikely(!p)) - goto out_err; - - netid = kmalloc(nlen+1, gfp_flags); - if (unlikely(!netid)) - goto out_err; - - netid[nlen] = '\0'; - memcpy(netid, p, nlen); - - /* r_addr: ip/ip6addr with port in dec octets - see RFC 5665 */ - p = xdr_inline_decode(streamp, 4); - if (unlikely(!p)) - goto out_free_netid; - rlen = be32_to_cpup(p); - - p = xdr_inline_decode(streamp, rlen); - if (unlikely(!p)) - goto out_free_netid; - - /* port is ".ABC.DEF", 8 chars max */ - if (rlen > INET6_ADDRSTRLEN + IPV6_SCOPE_ID_LEN + 8) { - dprintk("%s: Invalid address, length %d\n", __func__, - rlen); - goto out_free_netid; - } - buf = kmalloc(rlen + 1, gfp_flags); - if (!buf) { - dprintk("%s: Not enough memory\n", __func__); - goto out_free_netid; - } - buf[rlen] = '\0'; - memcpy(buf, p, rlen); - - /* replace port '.' with '-' */ - portstr = strrchr(buf, '.'); - if (!portstr) { - dprintk("%s: Failed finding expected dot in port\n", - __func__); - goto out_free_buf; - } - *portstr = '-'; - - /* find '.' between address and port */ - portstr = strrchr(buf, '.'); - if (!portstr) { - dprintk("%s: Failed finding expected dot between address and " - "port\n", __func__); - goto out_free_buf; - } - *portstr = '\0'; - - da = kzalloc(sizeof(*da), gfp_flags); - if (unlikely(!da)) - goto out_free_buf; - - INIT_LIST_HEAD(&da->da_node); - - if (!rpc_pton(net, buf, portstr-buf, (struct sockaddr *)&da->da_addr, - sizeof(da->da_addr))) { - dprintk("%s: error parsing address %s\n", __func__, buf); - goto out_free_da; - } - - portstr++; - sscanf(portstr, "%d-%d", &tmp[0], &tmp[1]); - port = htons((tmp[0] << 8) | (tmp[1])); - - switch (da->da_addr.ss_family) { - case AF_INET: - ((struct sockaddr_in *)&da->da_addr)->sin_port = port; - da->da_addrlen = sizeof(struct sockaddr_in); - match_netid = "tcp"; - match_netid_len = 3; - break; - - case AF_INET6: - ((struct sockaddr_in6 *)&da->da_addr)->sin6_port = port; - da->da_addrlen = sizeof(struct sockaddr_in6); - match_netid = "tcp6"; - match_netid_len = 4; - startsep = "["; - endsep = "]"; - break; - - default: - dprintk("%s: unsupported address family: %u\n", - __func__, da->da_addr.ss_family); - goto out_free_da; - } - - if (nlen != match_netid_len || strncmp(netid, match_netid, nlen)) { - dprintk("%s: ERROR: r_netid \"%s\" != \"%s\"\n", - __func__, netid, match_netid); - goto out_free_da; - } - - /* save human readable address */ - len = strlen(startsep) + strlen(buf) + strlen(endsep) + 7; - da->da_remotestr = kzalloc(len, gfp_flags); - - /* NULL is ok, only used for dprintk */ - if (da->da_remotestr) - snprintf(da->da_remotestr, len, "%s%s%s:%u", startsep, - buf, endsep, ntohs(port)); - - dprintk("%s: Parsed DS addr %s\n", __func__, da->da_remotestr); - kfree(buf); - kfree(netid); - return da; - -out_free_da: - kfree(da); -out_free_buf: - dprintk("%s: Error parsing DS addr: %s\n", __func__, buf); - kfree(buf); -out_free_netid: - kfree(netid); -out_err: - return NULL; -} - /* Decode opaque device data and return the result */ struct nfs4_file_layout_dsaddr * nfs4_fl_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, @@ -584,8 +160,8 @@ nfs4_fl_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, mp_count = be32_to_cpup(p); /* multipath count */ for (j = 0; j < mp_count; j++) { - da = decode_ds_addr(server->nfs_client->cl_net, - &stream, gfp_flags); + da = nfs4_decode_mp_ds_addr(server->nfs_client->cl_net, + &stream, gfp_flags); if (da) list_add_tail(&da->da_node, &dsaddrs); } @@ -681,22 +257,7 @@ nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j) return flseg->fh_array[i]; } -static void nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds) -{ - might_sleep(); - wait_on_bit_action(&ds->ds_state, NFS4DS_CONNECTING, - nfs_wait_bit_killable, TASK_KILLABLE); -} - -static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds) -{ - smp_mb__before_atomic(); - clear_bit(NFS4DS_CONNECTING, &ds->ds_state); - smp_mb__after_atomic(); - wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING); -} - - +/* Upon return, either ds is connected, or ds is NULL */ struct nfs4_pnfs_ds * nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) { @@ -704,29 +265,23 @@ nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx]; struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg); struct nfs4_pnfs_ds *ret = ds; + struct nfs_server *s = NFS_SERVER(lseg->pls_layout->plh_inode); if (ds == NULL) { printk(KERN_ERR "NFS: %s: No data server for offset index %d\n", __func__, ds_idx); - filelayout_mark_devid_invalid(devid); + pnfs_generic_mark_devid_invalid(devid); goto out; } smp_rmb(); if (ds->ds_clp) goto out_test_devid; - if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) { - struct nfs_server *s = NFS_SERVER(lseg->pls_layout->plh_inode); - int err; - - err = nfs4_ds_connect(s, ds); - if (err) - nfs4_mark_deviceid_unavailable(devid); - nfs4_clear_ds_conn_bit(ds); - } else { - /* Either ds is connected, or ds is NULL */ - nfs4_wait_ds_connect(ds); - } + nfs4_pnfs_ds_connect(s, ds, devid, dataserver_timeo, + dataserver_retrans, 4, + s->nfs_client->cl_minorversion, + s->nfs_client->cl_rpcclient->cl_auth->au_flavor); + out_test_devid: if (filelayout_test_devid_unavailable(devid)) ret = NULL; diff --git a/fs/nfs/flexfilelayout/Makefile b/fs/nfs/flexfilelayout/Makefile new file mode 100644 index 0000000..1d2c9f6 --- /dev/null +++ b/fs/nfs/flexfilelayout/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the pNFS Flexfile Layout Driver kernel module +# +obj-$(CONFIG_PNFS_FLEXFILE_LAYOUT) += nfs_layout_flexfiles.o +nfs_layout_flexfiles-y := flexfilelayout.o flexfilelayoutdev.o diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c new file mode 100644 index 0000000..c22ecaa --- /dev/null +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -0,0 +1,1574 @@ +/* + * Module for pnfs flexfile layout driver. + * + * Copyright (c) 2014, Primary Data, Inc. All rights reserved. + * + * Tao Peng <bergwolf@primarydata.com> + */ + +#include <linux/nfs_fs.h> +#include <linux/nfs_page.h> +#include <linux/module.h> + +#include <linux/sunrpc/metrics.h> +#include <linux/nfs_idmap.h> + +#include "flexfilelayout.h" +#include "../nfs4session.h" +#include "../internal.h" +#include "../delegation.h" +#include "../nfs4trace.h" +#include "../iostat.h" +#include "../nfs.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +#define FF_LAYOUT_POLL_RETRY_MAX (15*HZ) + +static struct pnfs_layout_hdr * +ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) +{ + struct nfs4_flexfile_layout *ffl; + + ffl = kzalloc(sizeof(*ffl), gfp_flags); + if (ffl) { + INIT_LIST_HEAD(&ffl->error_list); + return &ffl->generic_hdr; + } else + return NULL; +} + +static void +ff_layout_free_layout_hdr(struct pnfs_layout_hdr *lo) +{ + struct nfs4_ff_layout_ds_err *err, *n; + + list_for_each_entry_safe(err, n, &FF_LAYOUT_FROM_HDR(lo)->error_list, + list) { + list_del(&err->list); + kfree(err); + } + kfree(FF_LAYOUT_FROM_HDR(lo)); +} + +static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE); + if (unlikely(p == NULL)) + return -ENOBUFS; + memcpy(stateid, p, NFS4_STATEID_SIZE); + dprintk("%s: stateid id= [%x%x%x%x]\n", __func__, + p[0], p[1], p[2], p[3]); + return 0; +} + +static int decode_deviceid(struct xdr_stream *xdr, struct nfs4_deviceid *devid) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS4_DEVICEID4_SIZE); + if (unlikely(!p)) + return -ENOBUFS; + memcpy(devid, p, NFS4_DEVICEID4_SIZE); + nfs4_print_deviceid(devid); + return 0; +} + +static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + return -ENOBUFS; + fh->size = be32_to_cpup(p++); + if (fh->size > sizeof(struct nfs_fh)) { + printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n", + fh->size); + return -EOVERFLOW; + } + /* fh.data */ + p = xdr_inline_decode(xdr, fh->size); + if (unlikely(!p)) + return -ENOBUFS; + memcpy(&fh->data, p, fh->size); + dprintk("%s: fh len %d\n", __func__, fh->size); + + return 0; +} + +/* + * Currently only stringified uids and gids are accepted. + * I.e., kerberos is not supported to the DSes, so no pricipals. + * + * That means that one common function will suffice, but when + * principals are added, this should be split to accomodate + * calls to both nfs_map_name_to_uid() and nfs_map_group_to_gid(). + */ +static int +decode_name(struct xdr_stream *xdr, u32 *id) +{ + __be32 *p; + int len; + + /* opaque_length(4)*/ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + return -ENOBUFS; + len = be32_to_cpup(p++); + if (len < 0) + return -EINVAL; + + dprintk("%s: len %u\n", __func__, len); + + /* opaque body */ + p = xdr_inline_decode(xdr, len); + if (unlikely(!p)) + return -ENOBUFS; + + if (!nfs_map_string_to_numeric((char *)p, len, id)) + return -EINVAL; + + return 0; +} + +static void ff_layout_free_mirror_array(struct nfs4_ff_layout_segment *fls) +{ + int i; + + if (fls->mirror_array) { + for (i = 0; i < fls->mirror_array_cnt; i++) { + /* normally mirror_ds is freed in + * .free_deviceid_node but we still do it here + * for .alloc_lseg error path */ + if (fls->mirror_array[i]) { + kfree(fls->mirror_array[i]->fh_versions); + nfs4_ff_layout_put_deviceid(fls->mirror_array[i]->mirror_ds); + kfree(fls->mirror_array[i]); + } + } + kfree(fls->mirror_array); + fls->mirror_array = NULL; + } +} + +static int ff_layout_check_layout(struct nfs4_layoutget_res *lgr) +{ + int ret = 0; + + dprintk("--> %s\n", __func__); + + /* FIXME: remove this check when layout segment support is added */ + if (lgr->range.offset != 0 || + lgr->range.length != NFS4_MAX_UINT64) { + dprintk("%s Only whole file layouts supported. Use MDS i/o\n", + __func__); + ret = -EINVAL; + } + + dprintk("--> %s returns %d\n", __func__, ret); + return ret; +} + +static void _ff_layout_free_lseg(struct nfs4_ff_layout_segment *fls) +{ + if (fls) { + ff_layout_free_mirror_array(fls); + kfree(fls); + } +} + +static void ff_layout_sort_mirrors(struct nfs4_ff_layout_segment *fls) +{ + struct nfs4_ff_layout_mirror *tmp; + int i, j; + + for (i = 0; i < fls->mirror_array_cnt - 1; i++) { + for (j = i + 1; j < fls->mirror_array_cnt; j++) + if (fls->mirror_array[i]->efficiency < + fls->mirror_array[j]->efficiency) { + tmp = fls->mirror_array[i]; + fls->mirror_array[i] = fls->mirror_array[j]; + fls->mirror_array[j] = tmp; + } + } +} + +static struct pnfs_layout_segment * +ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, + struct nfs4_layoutget_res *lgr, + gfp_t gfp_flags) +{ + struct pnfs_layout_segment *ret; + struct nfs4_ff_layout_segment *fls = NULL; + struct xdr_stream stream; + struct xdr_buf buf; + struct page *scratch; + u64 stripe_unit; + u32 mirror_array_cnt; + __be32 *p; + int i, rc; + + dprintk("--> %s\n", __func__); + scratch = alloc_page(gfp_flags); + if (!scratch) + return ERR_PTR(-ENOMEM); + + xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, + lgr->layoutp->len); + xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); + + /* stripe unit and mirror_array_cnt */ + rc = -EIO; + p = xdr_inline_decode(&stream, 8 + 4); + if (!p) + goto out_err_free; + + p = xdr_decode_hyper(p, &stripe_unit); + mirror_array_cnt = be32_to_cpup(p++); + dprintk("%s: stripe_unit=%llu mirror_array_cnt=%u\n", __func__, + stripe_unit, mirror_array_cnt); + + if (mirror_array_cnt > NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT || + mirror_array_cnt == 0) + goto out_err_free; + + rc = -ENOMEM; + fls = kzalloc(sizeof(*fls), gfp_flags); + if (!fls) + goto out_err_free; + + fls->mirror_array_cnt = mirror_array_cnt; + fls->stripe_unit = stripe_unit; + fls->mirror_array = kcalloc(fls->mirror_array_cnt, + sizeof(fls->mirror_array[0]), gfp_flags); + if (fls->mirror_array == NULL) + goto out_err_free; + + for (i = 0; i < fls->mirror_array_cnt; i++) { + struct nfs4_deviceid devid; + struct nfs4_deviceid_node *idnode; + u32 ds_count; + u32 fh_count; + int j; + + rc = -EIO; + p = xdr_inline_decode(&stream, 4); + if (!p) + goto out_err_free; + ds_count = be32_to_cpup(p); + + /* FIXME: allow for striping? */ + if (ds_count != 1) + goto out_err_free; + + fls->mirror_array[i] = + kzalloc(sizeof(struct nfs4_ff_layout_mirror), + gfp_flags); + if (fls->mirror_array[i] == NULL) { + rc = -ENOMEM; + goto out_err_free; + } + + spin_lock_init(&fls->mirror_array[i]->lock); + fls->mirror_array[i]->ds_count = ds_count; + + /* deviceid */ + rc = decode_deviceid(&stream, &devid); + if (rc) + goto out_err_free; + + idnode = nfs4_find_get_deviceid(NFS_SERVER(lh->plh_inode), + &devid, lh->plh_lc_cred, + gfp_flags); + /* + * upon success, mirror_ds is allocated by previous + * getdeviceinfo, or newly by .alloc_deviceid_node + * nfs4_find_get_deviceid failure is indeed getdeviceinfo falure + */ + if (idnode) + fls->mirror_array[i]->mirror_ds = + FF_LAYOUT_MIRROR_DS(idnode); + else + goto out_err_free; + + /* efficiency */ + rc = -EIO; + p = xdr_inline_decode(&stream, 4); + if (!p) + goto out_err_free; + fls->mirror_array[i]->efficiency = be32_to_cpup(p); + + /* stateid */ + rc = decode_stateid(&stream, &fls->mirror_array[i]->stateid); + if (rc) + goto out_err_free; + + /* fh */ + p = xdr_inline_decode(&stream, 4); + if (!p) + goto out_err_free; + fh_count = be32_to_cpup(p); + + fls->mirror_array[i]->fh_versions = + kzalloc(fh_count * sizeof(struct nfs_fh), + gfp_flags); + if (fls->mirror_array[i]->fh_versions == NULL) { + rc = -ENOMEM; + goto out_err_free; + } + + for (j = 0; j < fh_count; j++) { + rc = decode_nfs_fh(&stream, + &fls->mirror_array[i]->fh_versions[j]); + if (rc) + goto out_err_free; + } + + fls->mirror_array[i]->fh_versions_cnt = fh_count; + + /* user */ + rc = decode_name(&stream, &fls->mirror_array[i]->uid); + if (rc) + goto out_err_free; + + /* group */ + rc = decode_name(&stream, &fls->mirror_array[i]->gid); + if (rc) + goto out_err_free; + + dprintk("%s: uid %d gid %d\n", __func__, + fls->mirror_array[i]->uid, + fls->mirror_array[i]->gid); + } + + ff_layout_sort_mirrors(fls); + rc = ff_layout_check_layout(lgr); + if (rc) + goto out_err_free; + + ret = &fls->generic_hdr; + dprintk("<-- %s (success)\n", __func__); +out_free_page: + __free_page(scratch); + return ret; +out_err_free: + _ff_layout_free_lseg(fls); + ret = ERR_PTR(rc); + dprintk("<-- %s (%d)\n", __func__, rc); + goto out_free_page; +} + +static bool ff_layout_has_rw_segments(struct pnfs_layout_hdr *layout) +{ + struct pnfs_layout_segment *lseg; + + list_for_each_entry(lseg, &layout->plh_segs, pls_list) + if (lseg->pls_range.iomode == IOMODE_RW) + return true; + + return false; +} + +static void +ff_layout_free_lseg(struct pnfs_layout_segment *lseg) +{ + struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); + int i; + + dprintk("--> %s\n", __func__); + + for (i = 0; i < fls->mirror_array_cnt; i++) { + if (fls->mirror_array[i]) { + nfs4_ff_layout_put_deviceid(fls->mirror_array[i]->mirror_ds); + fls->mirror_array[i]->mirror_ds = NULL; + if (fls->mirror_array[i]->cred) { + put_rpccred(fls->mirror_array[i]->cred); + fls->mirror_array[i]->cred = NULL; + } + } + } + + if (lseg->pls_range.iomode == IOMODE_RW) { + struct nfs4_flexfile_layout *ffl; + struct inode *inode; + + ffl = FF_LAYOUT_FROM_HDR(lseg->pls_layout); + inode = ffl->generic_hdr.plh_inode; + spin_lock(&inode->i_lock); + if (!ff_layout_has_rw_segments(lseg->pls_layout)) { + ffl->commit_info.nbuckets = 0; + kfree(ffl->commit_info.buckets); + ffl->commit_info.buckets = NULL; + } + spin_unlock(&inode->i_lock); + } + _ff_layout_free_lseg(fls); +} + +/* Return 1 until we have multiple lsegs support */ +static int +ff_layout_get_lseg_count(struct nfs4_ff_layout_segment *fls) +{ + return 1; +} + +static int +ff_layout_alloc_commit_info(struct pnfs_layout_segment *lseg, + struct nfs_commit_info *cinfo, + gfp_t gfp_flags) +{ + struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); + struct pnfs_commit_bucket *buckets; + int size; + + if (cinfo->ds->nbuckets != 0) { + /* This assumes there is only one RW lseg per file. + * To support multiple lseg per file, we need to + * change struct pnfs_commit_bucket to allow dynamic + * increasing nbuckets. + */ + return 0; + } + + size = ff_layout_get_lseg_count(fls) * FF_LAYOUT_MIRROR_COUNT(lseg); + + buckets = kcalloc(size, sizeof(struct pnfs_commit_bucket), + gfp_flags); + if (!buckets) + return -ENOMEM; + else { + int i; + + spin_lock(cinfo->lock); + if (cinfo->ds->nbuckets != 0) + kfree(buckets); + else { + cinfo->ds->buckets = buckets; + cinfo->ds->nbuckets = size; + for (i = 0; i < size; i++) { + INIT_LIST_HEAD(&buckets[i].written); + INIT_LIST_HEAD(&buckets[i].committing); + /* mark direct verifier as unset */ + buckets[i].direct_verf.committed = + NFS_INVALID_STABLE_HOW; + } + } + spin_unlock(cinfo->lock); + return 0; + } +} + +static struct nfs4_pnfs_ds * +ff_layout_choose_best_ds_for_read(struct nfs_pageio_descriptor *pgio, + int *best_idx) +{ + struct nfs4_ff_layout_segment *fls; + struct nfs4_pnfs_ds *ds; + int idx; + + fls = FF_LAYOUT_LSEG(pgio->pg_lseg); + /* mirrors are sorted by efficiency */ + for (idx = 0; idx < fls->mirror_array_cnt; idx++) { + ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, idx, false); + if (ds) { + *best_idx = idx; + return ds; + } + } + + return NULL; +} + +static void +ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, + struct nfs_page *req) +{ + struct nfs_pgio_mirror *pgm; + struct nfs4_ff_layout_mirror *mirror; + struct nfs4_pnfs_ds *ds; + int ds_idx; + + /* Use full layout for now */ + if (!pgio->pg_lseg) + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + 0, + NFS4_MAX_UINT64, + IOMODE_READ, + GFP_KERNEL); + /* If no lseg, fall back to read through mds */ + if (pgio->pg_lseg == NULL) + goto out_mds; + + ds = ff_layout_choose_best_ds_for_read(pgio, &ds_idx); + if (!ds) + goto out_mds; + mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx); + + pgio->pg_mirror_idx = ds_idx; + + /* read always uses only one mirror - idx 0 for pgio layer */ + pgm = &pgio->pg_mirrors[0]; + pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize; + + return; +out_mds: + pnfs_put_lseg(pgio->pg_lseg); + pgio->pg_lseg = NULL; + nfs_pageio_reset_read_mds(pgio); +} + +static void +ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio, + struct nfs_page *req) +{ + struct nfs4_ff_layout_mirror *mirror; + struct nfs_pgio_mirror *pgm; + struct nfs_commit_info cinfo; + struct nfs4_pnfs_ds *ds; + int i; + int status; + + if (!pgio->pg_lseg) + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + 0, + NFS4_MAX_UINT64, + IOMODE_RW, + GFP_NOFS); + /* If no lseg, fall back to write through mds */ + if (pgio->pg_lseg == NULL) + goto out_mds; + + nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq); + status = ff_layout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS); + if (status < 0) + goto out_mds; + + /* Use a direct mapping of ds_idx to pgio mirror_idx */ + if (WARN_ON_ONCE(pgio->pg_mirror_count != + FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg))) + goto out_mds; + + for (i = 0; i < pgio->pg_mirror_count; i++) { + ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true); + if (!ds) + goto out_mds; + pgm = &pgio->pg_mirrors[i]; + mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); + pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].wsize; + } + + return; + +out_mds: + pnfs_put_lseg(pgio->pg_lseg); + pgio->pg_lseg = NULL; + nfs_pageio_reset_write_mds(pgio); +} + +static unsigned int +ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio, + struct nfs_page *req) +{ + if (!pgio->pg_lseg) + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + 0, + NFS4_MAX_UINT64, + IOMODE_RW, + GFP_NOFS); + if (pgio->pg_lseg) + return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg); + + /* no lseg means that pnfs is not in use, so no mirroring here */ + pnfs_put_lseg(pgio->pg_lseg); + pgio->pg_lseg = NULL; + nfs_pageio_reset_write_mds(pgio); + return 1; +} + +static const struct nfs_pageio_ops ff_layout_pg_read_ops = { + .pg_init = ff_layout_pg_init_read, + .pg_test = pnfs_generic_pg_test, + .pg_doio = pnfs_generic_pg_readpages, + .pg_cleanup = pnfs_generic_pg_cleanup, +}; + +static const struct nfs_pageio_ops ff_layout_pg_write_ops = { + .pg_init = ff_layout_pg_init_write, + .pg_test = pnfs_generic_pg_test, + .pg_doio = pnfs_generic_pg_writepages, + .pg_get_mirror_count = ff_layout_pg_get_mirror_count_write, + .pg_cleanup = pnfs_generic_pg_cleanup, +}; + +static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs) +{ + struct rpc_task *task = &hdr->task; + + pnfs_layoutcommit_inode(hdr->inode, false); + + if (retry_pnfs) { + dprintk("%s Reset task %5u for i/o through pNFS " + "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, + hdr->task.tk_pid, + hdr->inode->i_sb->s_id, + (unsigned long long)NFS_FILEID(hdr->inode), + hdr->args.count, + (unsigned long long)hdr->args.offset); + + if (!hdr->dreq) { + struct nfs_open_context *ctx; + + ctx = nfs_list_entry(hdr->pages.next)->wb_context; + set_bit(NFS_CONTEXT_RESEND_WRITES, &ctx->flags); + hdr->completion_ops->error_cleanup(&hdr->pages); + } else { + nfs_direct_set_resched_writes(hdr->dreq); + /* fake unstable write to let common nfs resend pages */ + hdr->verf.committed = NFS_UNSTABLE; + hdr->good_bytes = 0; + } + return; + } + + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { + dprintk("%s Reset task %5u for i/o through MDS " + "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, + hdr->task.tk_pid, + hdr->inode->i_sb->s_id, + (unsigned long long)NFS_FILEID(hdr->inode), + hdr->args.count, + (unsigned long long)hdr->args.offset); + + task->tk_status = pnfs_write_done_resend_to_mds(hdr); + } +} + +static void ff_layout_reset_read(struct nfs_pgio_header *hdr) +{ + struct rpc_task *task = &hdr->task; + + pnfs_layoutcommit_inode(hdr->inode, false); + + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { + dprintk("%s Reset task %5u for i/o through MDS " + "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, + hdr->task.tk_pid, + hdr->inode->i_sb->s_id, + (unsigned long long)NFS_FILEID(hdr->inode), + hdr->args.count, + (unsigned long long)hdr->args.offset); + + task->tk_status = pnfs_read_done_resend_to_mds(hdr); + } +} + +static int ff_layout_async_handle_error_v4(struct rpc_task *task, + struct nfs4_state *state, + struct nfs_client *clp, + struct pnfs_layout_segment *lseg, + int idx) +{ + struct pnfs_layout_hdr *lo = lseg->pls_layout; + struct inode *inode = lo->plh_inode; + struct nfs_server *mds_server = NFS_SERVER(inode); + + struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); + struct nfs_client *mds_client = mds_server->nfs_client; + struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; + + if (task->tk_status >= 0) + return 0; + + switch (task->tk_status) { + /* MDS state errors */ + case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + if (state == NULL) + break; + nfs_remove_bad_delegation(state->inode); + case -NFS4ERR_OPENMODE: + if (state == NULL) + break; + if (nfs4_schedule_stateid_recovery(mds_server, state) < 0) + goto out_bad_stateid; + goto wait_on_recovery; + case -NFS4ERR_EXPIRED: + if (state != NULL) { + if (nfs4_schedule_stateid_recovery(mds_server, state) < 0) + goto out_bad_stateid; + } + nfs4_schedule_lease_recovery(mds_client); + goto wait_on_recovery; + /* DS session errors */ + case -NFS4ERR_BADSESSION: + case -NFS4ERR_BADSLOT: + case -NFS4ERR_BAD_HIGH_SLOT: + case -NFS4ERR_DEADSESSION: + case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: + case -NFS4ERR_SEQ_FALSE_RETRY: + case -NFS4ERR_SEQ_MISORDERED: + dprintk("%s ERROR %d, Reset session. Exchangeid " + "flags 0x%x\n", __func__, task->tk_status, + clp->cl_exchange_flags); + nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); + break; + case -NFS4ERR_DELAY: + case -NFS4ERR_GRACE: + rpc_delay(task, FF_LAYOUT_POLL_RETRY_MAX); + break; + case -NFS4ERR_RETRY_UNCACHED_REP: + break; + /* Invalidate Layout errors */ + case -NFS4ERR_PNFS_NO_LAYOUT: + case -ESTALE: /* mapped NFS4ERR_STALE */ + case -EBADHANDLE: /* mapped NFS4ERR_BADHANDLE */ + case -EISDIR: /* mapped NFS4ERR_ISDIR */ + case -NFS4ERR_FHEXPIRED: + case -NFS4ERR_WRONG_TYPE: + dprintk("%s Invalid layout error %d\n", __func__, + task->tk_status); + /* + * Destroy layout so new i/o will get a new layout. + * Layout will not be destroyed until all current lseg + * references are put. Mark layout as invalid to resend failed + * i/o and all i/o waiting on the slot table to the MDS until + * layout is destroyed and a new valid layout is obtained. + */ + pnfs_destroy_layout(NFS_I(inode)); + rpc_wake_up(&tbl->slot_tbl_waitq); + goto reset; + /* RPC connection errors */ + case -ECONNREFUSED: + case -EHOSTDOWN: + case -EHOSTUNREACH: + case -ENETUNREACH: + case -EIO: + case -ETIMEDOUT: + case -EPIPE: + dprintk("%s DS connection error %d\n", __func__, + task->tk_status); + nfs4_mark_deviceid_unavailable(devid); + rpc_wake_up(&tbl->slot_tbl_waitq); + /* fall through */ + default: + if (ff_layout_has_available_ds(lseg)) + return -NFS4ERR_RESET_TO_PNFS; +reset: + dprintk("%s Retry through MDS. Error %d\n", __func__, + task->tk_status); + return -NFS4ERR_RESET_TO_MDS; + } +out: + task->tk_status = 0; + return -EAGAIN; +out_bad_stateid: + task->tk_status = -EIO; + return 0; +wait_on_recovery: + rpc_sleep_on(&mds_client->cl_rpcwaitq, task, NULL); + if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0) + rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task); + goto out; +} + +/* Retry all errors through either pNFS or MDS except for -EJUKEBOX */ +static int ff_layout_async_handle_error_v3(struct rpc_task *task, + struct pnfs_layout_segment *lseg, + int idx) +{ + struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); + + if (task->tk_status >= 0) + return 0; + + if (task->tk_status != -EJUKEBOX) { + dprintk("%s DS connection error %d\n", __func__, + task->tk_status); + nfs4_mark_deviceid_unavailable(devid); + if (ff_layout_has_available_ds(lseg)) + return -NFS4ERR_RESET_TO_PNFS; + else + return -NFS4ERR_RESET_TO_MDS; + } + + if (task->tk_status == -EJUKEBOX) + nfs_inc_stats(lseg->pls_layout->plh_inode, NFSIOS_DELAY); + task->tk_status = 0; + rpc_restart_call(task); + rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); + return -EAGAIN; +} + +static int ff_layout_async_handle_error(struct rpc_task *task, + struct nfs4_state *state, + struct nfs_client *clp, + struct pnfs_layout_segment *lseg, + int idx) +{ + int vers = clp->cl_nfs_mod->rpc_vers->number; + + switch (vers) { + case 3: + return ff_layout_async_handle_error_v3(task, lseg, idx); + case 4: + return ff_layout_async_handle_error_v4(task, state, clp, + lseg, idx); + default: + /* should never happen */ + WARN_ON_ONCE(1); + return 0; + } +} + +static void ff_layout_io_track_ds_error(struct pnfs_layout_segment *lseg, + int idx, u64 offset, u64 length, + u32 status, int opnum) +{ + struct nfs4_ff_layout_mirror *mirror; + int err; + + mirror = FF_LAYOUT_COMP(lseg, idx); + err = ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), + mirror, offset, length, status, opnum, + GFP_NOIO); + dprintk("%s: err %d op %d status %u\n", __func__, err, opnum, status); +} + +/* NFS_PROTO call done callback routines */ + +static int ff_layout_read_done_cb(struct rpc_task *task, + struct nfs_pgio_header *hdr) +{ + struct inode *inode; + int err; + + trace_nfs4_pnfs_read(hdr, task->tk_status); + if (task->tk_status == -ETIMEDOUT && !hdr->res.op_status) + hdr->res.op_status = NFS4ERR_NXIO; + if (task->tk_status < 0 && hdr->res.op_status) + ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, + hdr->args.offset, hdr->args.count, + hdr->res.op_status, OP_READ); + err = ff_layout_async_handle_error(task, hdr->args.context->state, + hdr->ds_clp, hdr->lseg, + hdr->pgio_mirror_idx); + + switch (err) { + case -NFS4ERR_RESET_TO_PNFS: + set_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, + &hdr->lseg->pls_layout->plh_flags); + pnfs_read_resend_pnfs(hdr); + return task->tk_status; + case -NFS4ERR_RESET_TO_MDS: + inode = hdr->lseg->pls_layout->plh_inode; + pnfs_error_mark_layout_for_return(inode, hdr->lseg); + ff_layout_reset_read(hdr); + return task->tk_status; + case -EAGAIN: + rpc_restart_call_prepare(task); + return -EAGAIN; + } + + return 0; +} + +/* + * We reference the rpc_cred of the first WRITE that triggers the need for + * a LAYOUTCOMMIT, and use it to send the layoutcommit compound. + * rfc5661 is not clear about which credential should be used. + * + * Flexlayout client should treat DS replied FILE_SYNC as DATA_SYNC, so + * to follow http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751 + * we always send layoutcommit after DS writes. + */ +static void +ff_layout_set_layoutcommit(struct nfs_pgio_header *hdr) +{ + pnfs_set_layoutcommit(hdr); + dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino, + (unsigned long) NFS_I(hdr->inode)->layout->plh_lwb); +} + +static bool +ff_layout_reset_to_mds(struct pnfs_layout_segment *lseg, int idx) +{ + /* No mirroring for now */ + struct nfs4_deviceid_node *node = FF_LAYOUT_DEVID_NODE(lseg, idx); + + return ff_layout_test_devid_unavailable(node); +} + +static int ff_layout_read_prepare_common(struct rpc_task *task, + struct nfs_pgio_header *hdr) +{ + if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { + rpc_exit(task, -EIO); + return -EIO; + } + if (ff_layout_reset_to_mds(hdr->lseg, hdr->pgio_mirror_idx)) { + dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid); + if (ff_layout_has_available_ds(hdr->lseg)) + pnfs_read_resend_pnfs(hdr); + else + ff_layout_reset_read(hdr); + rpc_exit(task, 0); + return -EAGAIN; + } + hdr->pgio_done_cb = ff_layout_read_done_cb; + + return 0; +} + +/* + * Call ops for the async read/write cases + * In the case of dense layouts, the offset needs to be reset to its + * original value. + */ +static void ff_layout_read_prepare_v3(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (ff_layout_read_prepare_common(task, hdr)) + return; + + rpc_call_start(task); +} + +static int ff_layout_setup_sequence(struct nfs_client *ds_clp, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) +{ + if (ds_clp->cl_session) + return nfs41_setup_sequence(ds_clp->cl_session, + args, + res, + task); + return nfs40_setup_sequence(ds_clp->cl_slot_tbl, + args, + res, + task); +} + +static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (ff_layout_read_prepare_common(task, hdr)) + return; + + if (ff_layout_setup_sequence(hdr->ds_clp, + &hdr->args.seq_args, + &hdr->res.seq_res, + task)) + return; + + if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, + hdr->args.lock_context, FMODE_READ) == -EIO) + rpc_exit(task, -EIO); /* lost lock, terminate I/O */ +} + +static void ff_layout_read_call_done(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); + + if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && + task->tk_status == 0) { + nfs4_sequence_done(task, &hdr->res.seq_res); + return; + } + + /* Note this may cause RPC to be resent */ + hdr->mds_ops->rpc_call_done(task, hdr); +} + +static void ff_layout_read_count_stats(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + rpc_count_iostats_metrics(task, + &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_READ]); +} + +static int ff_layout_write_done_cb(struct rpc_task *task, + struct nfs_pgio_header *hdr) +{ + struct inode *inode; + int err; + + trace_nfs4_pnfs_write(hdr, task->tk_status); + if (task->tk_status == -ETIMEDOUT && !hdr->res.op_status) + hdr->res.op_status = NFS4ERR_NXIO; + if (task->tk_status < 0 && hdr->res.op_status) + ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, + hdr->args.offset, hdr->args.count, + hdr->res.op_status, OP_WRITE); + err = ff_layout_async_handle_error(task, hdr->args.context->state, + hdr->ds_clp, hdr->lseg, + hdr->pgio_mirror_idx); + + switch (err) { + case -NFS4ERR_RESET_TO_PNFS: + case -NFS4ERR_RESET_TO_MDS: + inode = hdr->lseg->pls_layout->plh_inode; + pnfs_error_mark_layout_for_return(inode, hdr->lseg); + if (err == -NFS4ERR_RESET_TO_PNFS) { + pnfs_set_retry_layoutget(hdr->lseg->pls_layout); + ff_layout_reset_write(hdr, true); + } else { + pnfs_clear_retry_layoutget(hdr->lseg->pls_layout); + ff_layout_reset_write(hdr, false); + } + return task->tk_status; + case -EAGAIN: + rpc_restart_call_prepare(task); + return -EAGAIN; + } + + if (hdr->res.verf->committed == NFS_FILE_SYNC || + hdr->res.verf->committed == NFS_DATA_SYNC) + ff_layout_set_layoutcommit(hdr); + + return 0; +} + +static int ff_layout_commit_done_cb(struct rpc_task *task, + struct nfs_commit_data *data) +{ + struct inode *inode; + int err; + + trace_nfs4_pnfs_commit_ds(data, task->tk_status); + if (task->tk_status == -ETIMEDOUT && !data->res.op_status) + data->res.op_status = NFS4ERR_NXIO; + if (task->tk_status < 0 && data->res.op_status) + ff_layout_io_track_ds_error(data->lseg, data->ds_commit_index, + data->args.offset, data->args.count, + data->res.op_status, OP_COMMIT); + err = ff_layout_async_handle_error(task, NULL, data->ds_clp, + data->lseg, data->ds_commit_index); + + switch (err) { + case -NFS4ERR_RESET_TO_PNFS: + case -NFS4ERR_RESET_TO_MDS: + inode = data->lseg->pls_layout->plh_inode; + pnfs_error_mark_layout_for_return(inode, data->lseg); + if (err == -NFS4ERR_RESET_TO_PNFS) + pnfs_set_retry_layoutget(data->lseg->pls_layout); + else + pnfs_clear_retry_layoutget(data->lseg->pls_layout); + pnfs_generic_prepare_to_resend_writes(data); + return -EAGAIN; + case -EAGAIN: + rpc_restart_call_prepare(task); + return -EAGAIN; + } + + if (data->verf.committed == NFS_UNSTABLE) + pnfs_commit_set_layoutcommit(data); + + return 0; +} + +static int ff_layout_write_prepare_common(struct rpc_task *task, + struct nfs_pgio_header *hdr) +{ + if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { + rpc_exit(task, -EIO); + return -EIO; + } + + if (ff_layout_reset_to_mds(hdr->lseg, hdr->pgio_mirror_idx)) { + bool retry_pnfs; + + retry_pnfs = ff_layout_has_available_ds(hdr->lseg); + dprintk("%s task %u reset io to %s\n", __func__, + task->tk_pid, retry_pnfs ? "pNFS" : "MDS"); + ff_layout_reset_write(hdr, retry_pnfs); + rpc_exit(task, 0); + return -EAGAIN; + } + + return 0; +} + +static void ff_layout_write_prepare_v3(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (ff_layout_write_prepare_common(task, hdr)) + return; + + rpc_call_start(task); +} + +static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (ff_layout_write_prepare_common(task, hdr)) + return; + + if (ff_layout_setup_sequence(hdr->ds_clp, + &hdr->args.seq_args, + &hdr->res.seq_res, + task)) + return; + + if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, + hdr->args.lock_context, FMODE_WRITE) == -EIO) + rpc_exit(task, -EIO); /* lost lock, terminate I/O */ +} + +static void ff_layout_write_call_done(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && + task->tk_status == 0) { + nfs4_sequence_done(task, &hdr->res.seq_res); + return; + } + + /* Note this may cause RPC to be resent */ + hdr->mds_ops->rpc_call_done(task, hdr); +} + +static void ff_layout_write_count_stats(struct rpc_task *task, void *data) +{ + struct nfs_pgio_header *hdr = data; + + rpc_count_iostats_metrics(task, + &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_WRITE]); +} + +static void ff_layout_commit_prepare_v3(struct rpc_task *task, void *data) +{ + rpc_call_start(task); +} + +static void ff_layout_commit_prepare_v4(struct rpc_task *task, void *data) +{ + struct nfs_commit_data *wdata = data; + + ff_layout_setup_sequence(wdata->ds_clp, + &wdata->args.seq_args, + &wdata->res.seq_res, + task); +} + +static void ff_layout_commit_count_stats(struct rpc_task *task, void *data) +{ + struct nfs_commit_data *cdata = data; + + rpc_count_iostats_metrics(task, + &NFS_CLIENT(cdata->inode)->cl_metrics[NFSPROC4_CLNT_COMMIT]); +} + +static const struct rpc_call_ops ff_layout_read_call_ops_v3 = { + .rpc_call_prepare = ff_layout_read_prepare_v3, + .rpc_call_done = ff_layout_read_call_done, + .rpc_count_stats = ff_layout_read_count_stats, + .rpc_release = pnfs_generic_rw_release, +}; + +static const struct rpc_call_ops ff_layout_read_call_ops_v4 = { + .rpc_call_prepare = ff_layout_read_prepare_v4, + .rpc_call_done = ff_layout_read_call_done, + .rpc_count_stats = ff_layout_read_count_stats, + .rpc_release = pnfs_generic_rw_release, +}; + +static const struct rpc_call_ops ff_layout_write_call_ops_v3 = { + .rpc_call_prepare = ff_layout_write_prepare_v3, + .rpc_call_done = ff_layout_write_call_done, + .rpc_count_stats = ff_layout_write_count_stats, + .rpc_release = pnfs_generic_rw_release, +}; + +static const struct rpc_call_ops ff_layout_write_call_ops_v4 = { + .rpc_call_prepare = ff_layout_write_prepare_v4, + .rpc_call_done = ff_layout_write_call_done, + .rpc_count_stats = ff_layout_write_count_stats, + .rpc_release = pnfs_generic_rw_release, +}; + +static const struct rpc_call_ops ff_layout_commit_call_ops_v3 = { + .rpc_call_prepare = ff_layout_commit_prepare_v3, + .rpc_call_done = pnfs_generic_write_commit_done, + .rpc_count_stats = ff_layout_commit_count_stats, + .rpc_release = pnfs_generic_commit_release, +}; + +static const struct rpc_call_ops ff_layout_commit_call_ops_v4 = { + .rpc_call_prepare = ff_layout_commit_prepare_v4, + .rpc_call_done = pnfs_generic_write_commit_done, + .rpc_count_stats = ff_layout_commit_count_stats, + .rpc_release = pnfs_generic_commit_release, +}; + +static enum pnfs_try_status +ff_layout_read_pagelist(struct nfs_pgio_header *hdr) +{ + struct pnfs_layout_segment *lseg = hdr->lseg; + struct nfs4_pnfs_ds *ds; + struct rpc_clnt *ds_clnt; + struct rpc_cred *ds_cred; + loff_t offset = hdr->args.offset; + u32 idx = hdr->pgio_mirror_idx; + int vers; + struct nfs_fh *fh; + + dprintk("--> %s ino %lu pgbase %u req %Zu@%llu\n", + __func__, hdr->inode->i_ino, + hdr->args.pgbase, (size_t)hdr->args.count, offset); + + ds = nfs4_ff_layout_prepare_ds(lseg, idx, false); + if (!ds) + goto out_failed; + + ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + hdr->inode); + if (IS_ERR(ds_clnt)) + goto out_failed; + + ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred); + if (IS_ERR(ds_cred)) + goto out_failed; + + vers = nfs4_ff_layout_ds_version(lseg, idx); + + dprintk("%s USE DS: %s cl_count %d vers %d\n", __func__, + ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count), vers); + + atomic_inc(&ds->ds_clp->cl_count); + hdr->ds_clp = ds->ds_clp; + fh = nfs4_ff_layout_select_ds_fh(lseg, idx); + if (fh) + hdr->args.fh = fh; + + /* + * Note that if we ever decide to split across DSes, + * then we may need to handle dense-like offsets. + */ + hdr->args.offset = offset; + hdr->mds_offset = offset; + + /* Perform an asynchronous read to ds */ + nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, + vers == 3 ? &ff_layout_read_call_ops_v3 : + &ff_layout_read_call_ops_v4, + 0, RPC_TASK_SOFTCONN); + + return PNFS_ATTEMPTED; + +out_failed: + if (ff_layout_has_available_ds(lseg)) + return PNFS_TRY_AGAIN; + return PNFS_NOT_ATTEMPTED; +} + +/* Perform async writes. */ +static enum pnfs_try_status +ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) +{ + struct pnfs_layout_segment *lseg = hdr->lseg; + struct nfs4_pnfs_ds *ds; + struct rpc_clnt *ds_clnt; + struct rpc_cred *ds_cred; + loff_t offset = hdr->args.offset; + int vers; + struct nfs_fh *fh; + int idx = hdr->pgio_mirror_idx; + + ds = nfs4_ff_layout_prepare_ds(lseg, idx, true); + if (!ds) + return PNFS_NOT_ATTEMPTED; + + ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + hdr->inode); + if (IS_ERR(ds_clnt)) + return PNFS_NOT_ATTEMPTED; + + ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred); + if (IS_ERR(ds_cred)) + return PNFS_NOT_ATTEMPTED; + + vers = nfs4_ff_layout_ds_version(lseg, idx); + + dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s cl_count %d vers %d\n", + __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count, + offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count), + vers); + + hdr->pgio_done_cb = ff_layout_write_done_cb; + atomic_inc(&ds->ds_clp->cl_count); + hdr->ds_clp = ds->ds_clp; + hdr->ds_commit_idx = idx; + fh = nfs4_ff_layout_select_ds_fh(lseg, idx); + if (fh) + hdr->args.fh = fh; + + /* + * Note that if we ever decide to split across DSes, + * then we may need to handle dense-like offsets. + */ + hdr->args.offset = offset; + + /* Perform an asynchronous write */ + nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, + vers == 3 ? &ff_layout_write_call_ops_v3 : + &ff_layout_write_call_ops_v4, + sync, RPC_TASK_SOFTCONN); + return PNFS_ATTEMPTED; +} + +static void +ff_layout_mark_request_commit(struct nfs_page *req, + struct pnfs_layout_segment *lseg, + struct nfs_commit_info *cinfo, + u32 ds_commit_idx) +{ + struct list_head *list; + struct pnfs_commit_bucket *buckets; + + spin_lock(cinfo->lock); + buckets = cinfo->ds->buckets; + list = &buckets[ds_commit_idx].written; + if (list_empty(list)) { + /* Non-empty buckets hold a reference on the lseg. That ref + * is normally transferred to the COMMIT call and released + * there. It could also be released if the last req is pulled + * off due to a rewrite, in which case it will be done in + * pnfs_common_clear_request_commit + */ + WARN_ON_ONCE(buckets[ds_commit_idx].wlseg != NULL); + buckets[ds_commit_idx].wlseg = pnfs_get_lseg(lseg); + } + set_bit(PG_COMMIT_TO_DS, &req->wb_flags); + cinfo->ds->nwritten++; + + /* nfs_request_add_commit_list(). We need to add req to list without + * dropping cinfo lock. + */ + set_bit(PG_CLEAN, &(req)->wb_flags); + nfs_list_add_request(req, list); + cinfo->mds->ncommit++; + spin_unlock(cinfo->lock); + if (!cinfo->dreq) { + inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); + inc_bdi_stat(inode_to_bdi(page_file_mapping(req->wb_page)->host), + BDI_RECLAIMABLE); + __mark_inode_dirty(req->wb_context->dentry->d_inode, + I_DIRTY_DATASYNC); + } +} + +static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i) +{ + return i; +} + +static struct nfs_fh * +select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i) +{ + struct nfs4_ff_layout_segment *flseg = FF_LAYOUT_LSEG(lseg); + + /* FIXME: Assume that there is only one NFS version available + * for the DS. + */ + return &flseg->mirror_array[i]->fh_versions[0]; +} + +static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) +{ + struct pnfs_layout_segment *lseg = data->lseg; + struct nfs4_pnfs_ds *ds; + struct rpc_clnt *ds_clnt; + struct rpc_cred *ds_cred; + u32 idx; + int vers; + struct nfs_fh *fh; + + idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); + ds = nfs4_ff_layout_prepare_ds(lseg, idx, true); + if (!ds) + goto out_err; + + ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp, + data->inode); + if (IS_ERR(ds_clnt)) + goto out_err; + + ds_cred = ff_layout_get_ds_cred(lseg, idx, data->cred); + if (IS_ERR(ds_cred)) + goto out_err; + + vers = nfs4_ff_layout_ds_version(lseg, idx); + + dprintk("%s ino %lu, how %d cl_count %d vers %d\n", __func__, + data->inode->i_ino, how, atomic_read(&ds->ds_clp->cl_count), + vers); + data->commit_done_cb = ff_layout_commit_done_cb; + data->cred = ds_cred; + atomic_inc(&ds->ds_clp->cl_count); + data->ds_clp = ds->ds_clp; + fh = select_ds_fh_from_commit(lseg, data->ds_commit_index); + if (fh) + data->args.fh = fh; + return nfs_initiate_commit(ds_clnt, data, ds->ds_clp->rpc_ops, + vers == 3 ? &ff_layout_commit_call_ops_v3 : + &ff_layout_commit_call_ops_v4, + how, RPC_TASK_SOFTCONN); +out_err: + pnfs_generic_prepare_to_resend_writes(data); + pnfs_generic_commit_release(data); + return -EAGAIN; +} + +static int +ff_layout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, + int how, struct nfs_commit_info *cinfo) +{ + return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo, + ff_layout_initiate_commit); +} + +static struct pnfs_ds_commit_info * +ff_layout_get_ds_info(struct inode *inode) +{ + struct pnfs_layout_hdr *layout = NFS_I(inode)->layout; + + if (layout == NULL) + return NULL; + + return &FF_LAYOUT_FROM_HDR(layout)->commit_info; +} + +static void +ff_layout_free_deveiceid_node(struct nfs4_deviceid_node *d) +{ + nfs4_ff_layout_free_deviceid(container_of(d, struct nfs4_ff_layout_ds, + id_node)); +} + +static int ff_layout_encode_ioerr(struct nfs4_flexfile_layout *flo, + struct xdr_stream *xdr, + const struct nfs4_layoutreturn_args *args) +{ + struct pnfs_layout_hdr *hdr = &flo->generic_hdr; + __be32 *start; + int count = 0, ret = 0; + + start = xdr_reserve_space(xdr, 4); + if (unlikely(!start)) + return -E2BIG; + + /* This assume we always return _ALL_ layouts */ + spin_lock(&hdr->plh_inode->i_lock); + ret = ff_layout_encode_ds_ioerr(flo, xdr, &count, &args->range); + spin_unlock(&hdr->plh_inode->i_lock); + + *start = cpu_to_be32(count); + + return ret; +} + +/* report nothing for now */ +static void ff_layout_encode_iostats(struct nfs4_flexfile_layout *flo, + struct xdr_stream *xdr, + const struct nfs4_layoutreturn_args *args) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + if (likely(p)) + *p = cpu_to_be32(0); +} + +static struct nfs4_deviceid_node * +ff_layout_alloc_deviceid_node(struct nfs_server *server, + struct pnfs_device *pdev, gfp_t gfp_flags) +{ + struct nfs4_ff_layout_ds *dsaddr; + + dsaddr = nfs4_ff_alloc_deviceid_node(server, pdev, gfp_flags); + if (!dsaddr) + return NULL; + return &dsaddr->id_node; +} + +static void +ff_layout_encode_layoutreturn(struct pnfs_layout_hdr *lo, + struct xdr_stream *xdr, + const struct nfs4_layoutreturn_args *args) +{ + struct nfs4_flexfile_layout *flo = FF_LAYOUT_FROM_HDR(lo); + __be32 *start; + + dprintk("%s: Begin\n", __func__); + start = xdr_reserve_space(xdr, 4); + BUG_ON(!start); + + if (ff_layout_encode_ioerr(flo, xdr, args)) + goto out; + + ff_layout_encode_iostats(flo, xdr, args); +out: + *start = cpu_to_be32((xdr->p - start - 1) * 4); + dprintk("%s: Return\n", __func__); +} + +static struct pnfs_layoutdriver_type flexfilelayout_type = { + .id = LAYOUT_FLEX_FILES, + .name = "LAYOUT_FLEX_FILES", + .owner = THIS_MODULE, + .alloc_layout_hdr = ff_layout_alloc_layout_hdr, + .free_layout_hdr = ff_layout_free_layout_hdr, + .alloc_lseg = ff_layout_alloc_lseg, + .free_lseg = ff_layout_free_lseg, + .pg_read_ops = &ff_layout_pg_read_ops, + .pg_write_ops = &ff_layout_pg_write_ops, + .get_ds_info = ff_layout_get_ds_info, + .free_deviceid_node = ff_layout_free_deveiceid_node, + .mark_request_commit = ff_layout_mark_request_commit, + .clear_request_commit = pnfs_generic_clear_request_commit, + .scan_commit_lists = pnfs_generic_scan_commit_lists, + .recover_commit_reqs = pnfs_generic_recover_commit_reqs, + .commit_pagelist = ff_layout_commit_pagelist, + .read_pagelist = ff_layout_read_pagelist, + .write_pagelist = ff_layout_write_pagelist, + .alloc_deviceid_node = ff_layout_alloc_deviceid_node, + .encode_layoutreturn = ff_layout_encode_layoutreturn, +}; + +static int __init nfs4flexfilelayout_init(void) +{ + printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Registering...\n", + __func__); + return pnfs_register_layoutdriver(&flexfilelayout_type); +} + +static void __exit nfs4flexfilelayout_exit(void) +{ + printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Unregistering...\n", + __func__); + pnfs_unregister_layoutdriver(&flexfilelayout_type); +} + +MODULE_ALIAS("nfs-layouttype4-4"); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("The NFSv4 flexfile layout driver"); + +module_init(nfs4flexfilelayout_init); +module_exit(nfs4flexfilelayout_exit); diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h new file mode 100644 index 0000000..070f204 --- /dev/null +++ b/fs/nfs/flexfilelayout/flexfilelayout.h @@ -0,0 +1,155 @@ +/* + * NFSv4 flexfile layout driver data structures. + * + * Copyright (c) 2014, Primary Data, Inc. All rights reserved. + * + * Tao Peng <bergwolf@primarydata.com> + */ + +#ifndef FS_NFS_NFS4FLEXFILELAYOUT_H +#define FS_NFS_NFS4FLEXFILELAYOUT_H + +#include "../pnfs.h" + +/* XXX: Let's filter out insanely large mirror count for now to avoid oom + * due to network error etc. */ +#define NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT 4096 + +struct nfs4_ff_ds_version { + u32 version; + u32 minor_version; + u32 rsize; + u32 wsize; + bool tightly_coupled; +}; + +/* chained in global deviceid hlist */ +struct nfs4_ff_layout_ds { + struct nfs4_deviceid_node id_node; + u32 ds_versions_cnt; + struct nfs4_ff_ds_version *ds_versions; + struct nfs4_pnfs_ds *ds; +}; + +struct nfs4_ff_layout_ds_err { + struct list_head list; /* linked in mirror error_list */ + u64 offset; + u64 length; + int status; + enum nfs_opnum4 opnum; + nfs4_stateid stateid; + struct nfs4_deviceid deviceid; +}; + +struct nfs4_ff_layout_mirror { + u32 ds_count; + u32 efficiency; + struct nfs4_ff_layout_ds *mirror_ds; + u32 fh_versions_cnt; + struct nfs_fh *fh_versions; + nfs4_stateid stateid; + struct nfs4_string user_name; + struct nfs4_string group_name; + u32 uid; + u32 gid; + struct rpc_cred *cred; + spinlock_t lock; +}; + +struct nfs4_ff_layout_segment { + struct pnfs_layout_segment generic_hdr; + u64 stripe_unit; + u32 mirror_array_cnt; + struct nfs4_ff_layout_mirror **mirror_array; +}; + +struct nfs4_flexfile_layout { + struct pnfs_layout_hdr generic_hdr; + struct pnfs_ds_commit_info commit_info; + struct list_head error_list; /* nfs4_ff_layout_ds_err */ +}; + +static inline struct nfs4_flexfile_layout * +FF_LAYOUT_FROM_HDR(struct pnfs_layout_hdr *lo) +{ + return container_of(lo, struct nfs4_flexfile_layout, generic_hdr); +} + +static inline struct nfs4_ff_layout_segment * +FF_LAYOUT_LSEG(struct pnfs_layout_segment *lseg) +{ + return container_of(lseg, + struct nfs4_ff_layout_segment, + generic_hdr); +} + +static inline struct nfs4_deviceid_node * +FF_LAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg, u32 idx) +{ + if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt || + FF_LAYOUT_LSEG(lseg)->mirror_array[idx] == NULL || + FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds == NULL) + return NULL; + return &FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds->id_node; +} + +static inline struct nfs4_ff_layout_ds * +FF_LAYOUT_MIRROR_DS(struct nfs4_deviceid_node *node) +{ + return container_of(node, struct nfs4_ff_layout_ds, id_node); +} + +static inline struct nfs4_ff_layout_mirror * +FF_LAYOUT_COMP(struct pnfs_layout_segment *lseg, u32 idx) +{ + if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt) + return NULL; + return FF_LAYOUT_LSEG(lseg)->mirror_array[idx]; +} + +static inline u32 +FF_LAYOUT_MIRROR_COUNT(struct pnfs_layout_segment *lseg) +{ + return FF_LAYOUT_LSEG(lseg)->mirror_array_cnt; +} + +static inline bool +ff_layout_test_devid_unavailable(struct nfs4_deviceid_node *node) +{ + return nfs4_test_deviceid_unavailable(node); +} + +static inline int +nfs4_ff_layout_ds_version(struct pnfs_layout_segment *lseg, u32 ds_idx) +{ + return FF_LAYOUT_COMP(lseg, ds_idx)->mirror_ds->ds_versions[0].version; +} + +struct nfs4_ff_layout_ds * +nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags); +void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds); +void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds); +int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo, + struct nfs4_ff_layout_mirror *mirror, u64 offset, + u64 length, int status, enum nfs_opnum4 opnum, + gfp_t gfp_flags); +int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo, + struct xdr_stream *xdr, int *count, + const struct pnfs_layout_range *range); +struct nfs_fh * +nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx); + +struct nfs4_pnfs_ds * +nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx, + bool fail_return); + +struct rpc_clnt * +nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg, + u32 ds_idx, + struct nfs_client *ds_clp, + struct inode *inode); +struct rpc_cred *ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, + u32 ds_idx, struct rpc_cred *mdscred); +bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg); +#endif /* FS_NFS_NFS4FLEXFILELAYOUT_H */ diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c new file mode 100644 index 0000000..e2c01f2 --- /dev/null +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -0,0 +1,552 @@ +/* + * Device operations for the pnfs nfs4 file layout driver. + * + * Copyright (c) 2014, Primary Data, Inc. All rights reserved. + * + * Tao Peng <bergwolf@primarydata.com> + */ + +#include <linux/nfs_fs.h> +#include <linux/vmalloc.h> +#include <linux/module.h> +#include <linux/sunrpc/addr.h> + +#include "../internal.h" +#include "../nfs4session.h" +#include "flexfilelayout.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO; +static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS; + +void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds) +{ + if (mirror_ds) + nfs4_put_deviceid_node(&mirror_ds->id_node); +} + +void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds) +{ + nfs4_print_deviceid(&mirror_ds->id_node.deviceid); + nfs4_pnfs_ds_put(mirror_ds->ds); + kfree(mirror_ds); +} + +/* Decode opaque device data and construct new_ds using it */ +struct nfs4_ff_layout_ds * +nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags) +{ + struct xdr_stream stream; + struct xdr_buf buf; + struct page *scratch; + struct list_head dsaddrs; + struct nfs4_pnfs_ds_addr *da; + struct nfs4_ff_layout_ds *new_ds = NULL; + struct nfs4_ff_ds_version *ds_versions = NULL; + u32 mp_count; + u32 version_count; + __be32 *p; + int i, ret = -ENOMEM; + + /* set up xdr stream */ + scratch = alloc_page(gfp_flags); + if (!scratch) + goto out_err; + + new_ds = kzalloc(sizeof(struct nfs4_ff_layout_ds), gfp_flags); + if (!new_ds) + goto out_scratch; + + nfs4_init_deviceid_node(&new_ds->id_node, + server, + &pdev->dev_id); + INIT_LIST_HEAD(&dsaddrs); + + xdr_init_decode_pages(&stream, &buf, pdev->pages, pdev->pglen); + xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); + + /* multipath count */ + p = xdr_inline_decode(&stream, 4); + if (unlikely(!p)) + goto out_err_drain_dsaddrs; + mp_count = be32_to_cpup(p); + dprintk("%s: multipath ds count %d\n", __func__, mp_count); + + for (i = 0; i < mp_count; i++) { + /* multipath ds */ + da = nfs4_decode_mp_ds_addr(server->nfs_client->cl_net, + &stream, gfp_flags); + if (da) + list_add_tail(&da->da_node, &dsaddrs); + } + if (list_empty(&dsaddrs)) { + dprintk("%s: no suitable DS addresses found\n", + __func__); + ret = -ENOMEDIUM; + goto out_err_drain_dsaddrs; + } + + /* version count */ + p = xdr_inline_decode(&stream, 4); + if (unlikely(!p)) + goto out_err_drain_dsaddrs; + version_count = be32_to_cpup(p); + dprintk("%s: version count %d\n", __func__, version_count); + + ds_versions = kzalloc(version_count * sizeof(struct nfs4_ff_ds_version), + gfp_flags); + if (!ds_versions) + goto out_scratch; + + for (i = 0; i < version_count; i++) { + /* 20 = version(4) + minor_version(4) + rsize(4) + wsize(4) + + * tightly_coupled(4) */ + p = xdr_inline_decode(&stream, 20); + if (unlikely(!p)) + goto out_err_drain_dsaddrs; + ds_versions[i].version = be32_to_cpup(p++); + ds_versions[i].minor_version = be32_to_cpup(p++); + ds_versions[i].rsize = nfs_block_size(be32_to_cpup(p++), NULL); + ds_versions[i].wsize = nfs_block_size(be32_to_cpup(p++), NULL); + ds_versions[i].tightly_coupled = be32_to_cpup(p); + + if (ds_versions[i].rsize > NFS_MAX_FILE_IO_SIZE) + ds_versions[i].rsize = NFS_MAX_FILE_IO_SIZE; + if (ds_versions[i].wsize > NFS_MAX_FILE_IO_SIZE) + ds_versions[i].wsize = NFS_MAX_FILE_IO_SIZE; + + if (ds_versions[i].version != 3 || ds_versions[i].minor_version != 0) { + dprintk("%s: [%d] unsupported ds version %d-%d\n", __func__, + i, ds_versions[i].version, + ds_versions[i].minor_version); + ret = -EPROTONOSUPPORT; + goto out_err_drain_dsaddrs; + } + + dprintk("%s: [%d] vers %u minor_ver %u rsize %u wsize %u coupled %d\n", + __func__, i, ds_versions[i].version, + ds_versions[i].minor_version, + ds_versions[i].rsize, + ds_versions[i].wsize, + ds_versions[i].tightly_coupled); + } + + new_ds->ds_versions = ds_versions; + new_ds->ds_versions_cnt = version_count; + + new_ds->ds = nfs4_pnfs_ds_add(&dsaddrs, gfp_flags); + if (!new_ds->ds) + goto out_err_drain_dsaddrs; + + /* If DS was already in cache, free ds addrs */ + while (!list_empty(&dsaddrs)) { + da = list_first_entry(&dsaddrs, + struct nfs4_pnfs_ds_addr, + da_node); + list_del_init(&da->da_node); + kfree(da->da_remotestr); + kfree(da); + } + + __free_page(scratch); + return new_ds; + +out_err_drain_dsaddrs: + while (!list_empty(&dsaddrs)) { + da = list_first_entry(&dsaddrs, struct nfs4_pnfs_ds_addr, + da_node); + list_del_init(&da->da_node); + kfree(da->da_remotestr); + kfree(da); + } + + kfree(ds_versions); +out_scratch: + __free_page(scratch); +out_err: + kfree(new_ds); + + dprintk("%s ERROR: returning %d\n", __func__, ret); + return NULL; +} + +static u64 +end_offset(u64 start, u64 len) +{ + u64 end; + + end = start + len; + return end >= start ? end : NFS4_MAX_UINT64; +} + +static void extend_ds_error(struct nfs4_ff_layout_ds_err *err, + u64 offset, u64 length) +{ + u64 end; + + end = max_t(u64, end_offset(err->offset, err->length), + end_offset(offset, length)); + err->offset = min_t(u64, err->offset, offset); + err->length = end - err->offset; +} + +static bool ds_error_can_merge(struct nfs4_ff_layout_ds_err *err, u64 offset, + u64 length, int status, enum nfs_opnum4 opnum, + nfs4_stateid *stateid, + struct nfs4_deviceid *deviceid) +{ + return err->status == status && err->opnum == opnum && + nfs4_stateid_match(&err->stateid, stateid) && + !memcmp(&err->deviceid, deviceid, sizeof(*deviceid)) && + end_offset(err->offset, err->length) >= offset && + err->offset <= end_offset(offset, length); +} + +static bool merge_ds_error(struct nfs4_ff_layout_ds_err *old, + struct nfs4_ff_layout_ds_err *new) +{ + if (!ds_error_can_merge(old, new->offset, new->length, new->status, + new->opnum, &new->stateid, &new->deviceid)) + return false; + + extend_ds_error(old, new->offset, new->length); + return true; +} + +static bool +ff_layout_add_ds_error_locked(struct nfs4_flexfile_layout *flo, + struct nfs4_ff_layout_ds_err *dserr) +{ + struct nfs4_ff_layout_ds_err *err; + + list_for_each_entry(err, &flo->error_list, list) { + if (merge_ds_error(err, dserr)) { + return true; + } + } + + list_add(&dserr->list, &flo->error_list); + return false; +} + +static bool +ff_layout_update_ds_error(struct nfs4_flexfile_layout *flo, u64 offset, + u64 length, int status, enum nfs_opnum4 opnum, + nfs4_stateid *stateid, struct nfs4_deviceid *deviceid) +{ + bool found = false; + struct nfs4_ff_layout_ds_err *err; + + list_for_each_entry(err, &flo->error_list, list) { + if (ds_error_can_merge(err, offset, length, status, opnum, + stateid, deviceid)) { + found = true; + extend_ds_error(err, offset, length); + break; + } + } + + return found; +} + +int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo, + struct nfs4_ff_layout_mirror *mirror, u64 offset, + u64 length, int status, enum nfs_opnum4 opnum, + gfp_t gfp_flags) +{ + struct nfs4_ff_layout_ds_err *dserr; + bool needfree; + + if (status == 0) + return 0; + + if (mirror->mirror_ds == NULL) + return -EINVAL; + + spin_lock(&flo->generic_hdr.plh_inode->i_lock); + if (ff_layout_update_ds_error(flo, offset, length, status, opnum, + &mirror->stateid, + &mirror->mirror_ds->id_node.deviceid)) { + spin_unlock(&flo->generic_hdr.plh_inode->i_lock); + return 0; + } + spin_unlock(&flo->generic_hdr.plh_inode->i_lock); + dserr = kmalloc(sizeof(*dserr), gfp_flags); + if (!dserr) + return -ENOMEM; + + INIT_LIST_HEAD(&dserr->list); + dserr->offset = offset; + dserr->length = length; + dserr->status = status; + dserr->opnum = opnum; + nfs4_stateid_copy(&dserr->stateid, &mirror->stateid); + memcpy(&dserr->deviceid, &mirror->mirror_ds->id_node.deviceid, + NFS4_DEVICEID4_SIZE); + + spin_lock(&flo->generic_hdr.plh_inode->i_lock); + needfree = ff_layout_add_ds_error_locked(flo, dserr); + spin_unlock(&flo->generic_hdr.plh_inode->i_lock); + if (needfree) + kfree(dserr); + + return 0; +} + +/* currently we only support AUTH_NONE and AUTH_SYS */ +static rpc_authflavor_t +nfs4_ff_layout_choose_authflavor(struct nfs4_ff_layout_mirror *mirror) +{ + if (mirror->uid == (u32)-1) + return RPC_AUTH_NULL; + return RPC_AUTH_UNIX; +} + +/* fetch cred for NFSv3 DS */ +static int ff_layout_update_mirror_cred(struct nfs4_ff_layout_mirror *mirror, + struct nfs4_pnfs_ds *ds) +{ + if (ds->ds_clp && !mirror->cred && + mirror->mirror_ds->ds_versions[0].version == 3) { + struct rpc_auth *auth = ds->ds_clp->cl_rpcclient->cl_auth; + struct rpc_cred *cred; + struct auth_cred acred = { + .uid = make_kuid(&init_user_ns, mirror->uid), + .gid = make_kgid(&init_user_ns, mirror->gid), + }; + + /* AUTH_NULL ignores acred */ + cred = auth->au_ops->lookup_cred(auth, &acred, 0); + if (IS_ERR(cred)) { + dprintk("%s: lookup_cred failed with %ld\n", + __func__, PTR_ERR(cred)); + return PTR_ERR(cred); + } else { + mirror->cred = cred; + } + } + return 0; +} + +struct nfs_fh * +nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx) +{ + struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx); + struct nfs_fh *fh = NULL; + struct nfs4_deviceid_node *devid; + + if (mirror == NULL || mirror->mirror_ds == NULL || + mirror->mirror_ds->ds == NULL) { + printk(KERN_ERR "NFS: %s: No data server for mirror offset index %d\n", + __func__, mirror_idx); + if (mirror && mirror->mirror_ds) { + devid = &mirror->mirror_ds->id_node; + pnfs_generic_mark_devid_invalid(devid); + } + goto out; + } + + /* FIXME: For now assume there is only 1 version available for the DS */ + fh = &mirror->fh_versions[0]; +out: + return fh; +} + +/* Upon return, either ds is connected, or ds is NULL */ +struct nfs4_pnfs_ds * +nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx, + bool fail_return) +{ + struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx); + struct nfs4_pnfs_ds *ds = NULL; + struct nfs4_deviceid_node *devid; + struct inode *ino = lseg->pls_layout->plh_inode; + struct nfs_server *s = NFS_SERVER(ino); + unsigned int max_payload; + rpc_authflavor_t flavor; + + if (mirror == NULL || mirror->mirror_ds == NULL || + mirror->mirror_ds->ds == NULL) { + printk(KERN_ERR "NFS: %s: No data server for offset index %d\n", + __func__, ds_idx); + if (mirror && mirror->mirror_ds) { + devid = &mirror->mirror_ds->id_node; + pnfs_generic_mark_devid_invalid(devid); + } + goto out; + } + + devid = &mirror->mirror_ds->id_node; + if (ff_layout_test_devid_unavailable(devid)) + goto out; + + ds = mirror->mirror_ds->ds; + /* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */ + smp_rmb(); + if (ds->ds_clp) + goto out; + + flavor = nfs4_ff_layout_choose_authflavor(mirror); + + /* FIXME: For now we assume the server sent only one version of NFS + * to use for the DS. + */ + nfs4_pnfs_ds_connect(s, ds, devid, dataserver_timeo, + dataserver_retrans, + mirror->mirror_ds->ds_versions[0].version, + mirror->mirror_ds->ds_versions[0].minor_version, + flavor); + + /* connect success, check rsize/wsize limit */ + if (ds->ds_clp) { + max_payload = + nfs_block_size(rpc_max_payload(ds->ds_clp->cl_rpcclient), + NULL); + if (mirror->mirror_ds->ds_versions[0].rsize > max_payload) + mirror->mirror_ds->ds_versions[0].rsize = max_payload; + if (mirror->mirror_ds->ds_versions[0].wsize > max_payload) + mirror->mirror_ds->ds_versions[0].wsize = max_payload; + } else { + ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), + mirror, lseg->pls_range.offset, + lseg->pls_range.length, NFS4ERR_NXIO, + OP_ILLEGAL, GFP_NOIO); + if (fail_return) { + pnfs_error_mark_layout_for_return(ino, lseg); + if (ff_layout_has_available_ds(lseg)) + pnfs_set_retry_layoutget(lseg->pls_layout); + else + pnfs_clear_retry_layoutget(lseg->pls_layout); + + } else { + if (ff_layout_has_available_ds(lseg)) + set_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, + &lseg->pls_layout->plh_flags); + else { + pnfs_error_mark_layout_for_return(ino, lseg); + pnfs_clear_retry_layoutget(lseg->pls_layout); + } + } + } + + if (ff_layout_update_mirror_cred(mirror, ds)) + ds = NULL; +out: + return ds; +} + +struct rpc_cred * +ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, u32 ds_idx, + struct rpc_cred *mdscred) +{ + struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx); + struct rpc_cred *cred = ERR_PTR(-EINVAL); + + if (!nfs4_ff_layout_prepare_ds(lseg, ds_idx, true)) + goto out; + + if (mirror && mirror->cred) + cred = mirror->cred; + else + cred = mdscred; +out: + return cred; +} + +/** +* Find or create a DS rpc client with th MDS server rpc client auth flavor +* in the nfs_client cl_ds_clients list. +*/ +struct rpc_clnt * +nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg, u32 ds_idx, + struct nfs_client *ds_clp, struct inode *inode) +{ + struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx); + + switch (mirror->mirror_ds->ds_versions[0].version) { + case 3: + /* For NFSv3 DS, flavor is set when creating DS connections */ + return ds_clp->cl_rpcclient; + case 4: + return nfs4_find_or_create_ds_client(ds_clp, inode); + default: + BUG(); + } +} + +static bool is_range_intersecting(u64 offset1, u64 length1, + u64 offset2, u64 length2) +{ + u64 end1 = end_offset(offset1, length1); + u64 end2 = end_offset(offset2, length2); + + return (end1 == NFS4_MAX_UINT64 || end1 > offset2) && + (end2 == NFS4_MAX_UINT64 || end2 > offset1); +} + +/* called with inode i_lock held */ +int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo, + struct xdr_stream *xdr, int *count, + const struct pnfs_layout_range *range) +{ + struct nfs4_ff_layout_ds_err *err, *n; + __be32 *p; + + list_for_each_entry_safe(err, n, &flo->error_list, list) { + if (!is_range_intersecting(err->offset, err->length, + range->offset, range->length)) + continue; + /* offset(8) + length(8) + stateid(NFS4_STATEID_SIZE) + * + deviceid(NFS4_DEVICEID4_SIZE) + status(4) + opnum(4) + */ + p = xdr_reserve_space(xdr, + 24 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE); + if (unlikely(!p)) + return -ENOBUFS; + p = xdr_encode_hyper(p, err->offset); + p = xdr_encode_hyper(p, err->length); + p = xdr_encode_opaque_fixed(p, &err->stateid, + NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, &err->deviceid, + NFS4_DEVICEID4_SIZE); + *p++ = cpu_to_be32(err->status); + *p++ = cpu_to_be32(err->opnum); + *count += 1; + list_del(&err->list); + dprintk("%s: offset %llu length %llu status %d op %d count %d\n", + __func__, err->offset, err->length, err->status, + err->opnum, *count); + kfree(err); + } + + return 0; +} + +bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg) +{ + struct nfs4_ff_layout_mirror *mirror; + struct nfs4_deviceid_node *devid; + int idx; + + for (idx = 0; idx < FF_LAYOUT_MIRROR_COUNT(lseg); idx++) { + mirror = FF_LAYOUT_COMP(lseg, idx); + if (mirror && mirror->mirror_ds) { + devid = &mirror->mirror_ds->id_node; + if (!ff_layout_test_devid_unavailable(devid)) + return true; + } + } + + return false; +} + +module_param(dataserver_retrans, uint, 0644); +MODULE_PARM_DESC(dataserver_retrans, "The number of times the NFSv4.1 client " + "retries a request before it attempts further " + " recovery action."); +module_param(dataserver_timeo, uint, 0644); +MODULE_PARM_DESC(dataserver_timeo, "The time (in tenths of a second) the " + "NFSv4.1 client waits for a response from a " + " data server before it retries an NFS request."); diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 2f5db84..857e2a9 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -152,7 +152,7 @@ void nfs_fattr_map_and_free_names(struct nfs_server *server, struct nfs_fattr *f nfs_fattr_free_group_name(fattr); } -static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res) +int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res) { unsigned long val; char buf[16]; @@ -166,6 +166,7 @@ static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *re *res = val; return 1; } +EXPORT_SYMBOL_GPL(nfs_map_string_to_numeric); static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen) { diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 24aac72..e4f0dce 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -352,8 +352,9 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st nfs_attr_check_mountpoint(sb, fattr); - if (((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0) && - !nfs_attr_use_mounted_on_fileid(fattr)) + if (nfs_attr_use_mounted_on_fileid(fattr)) + fattr->fileid = fattr->mounted_on_fileid; + else if ((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0) goto out_no_inode; if ((fattr->valid & NFS_ATTR_FATTR_TYPE) == 0) goto out_no_inode; @@ -505,10 +506,15 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) attr->ia_valid &= ~ATTR_MODE; if (attr->ia_valid & ATTR_SIZE) { + loff_t i_size; + BUG_ON(!S_ISREG(inode->i_mode)); - if (attr->ia_size == i_size_read(inode)) + i_size = i_size_read(inode); + if (attr->ia_size == i_size) attr->ia_valid &= ~ATTR_SIZE; + else if (attr->ia_size < i_size && IS_SWAPFILE(inode)) + return -ETXTBSY; } /* Optimization: if the end result is no change, don't RPC */ diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index f519d41..212b8c8 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -6,6 +6,7 @@ #include <linux/mount.h> #include <linux/security.h> #include <linux/crc32.h> +#include <linux/nfs_page.h> #define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS) @@ -31,8 +32,6 @@ static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr) (((fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT) == 0) && ((fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) == 0))) return 0; - - fattr->fileid = fattr->mounted_on_fileid; return 1; } @@ -189,9 +188,15 @@ extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, const struct sockaddr *ds_addr, int ds_addrlen, int ds_proto, unsigned int ds_timeo, - unsigned int ds_retrans); + unsigned int ds_retrans, + u32 minor_version, + rpc_authflavor_t au_flavor); extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *, struct inode *); +extern struct nfs_client *nfs3_set_ds_client(struct nfs_client *mds_clp, + const struct sockaddr *ds_addr, int ds_addrlen, + int ds_proto, unsigned int ds_timeo, + unsigned int ds_retrans, rpc_authflavor_t au_flavor); #ifdef CONFIG_PROC_FS extern int __init nfs_fs_proc_init(void); extern void nfs_fs_proc_exit(void); @@ -244,9 +249,12 @@ struct nfs_pgio_header *nfs_pgio_header_alloc(const struct nfs_rw_ops *); void nfs_pgio_header_free(struct nfs_pgio_header *); void nfs_pgio_data_destroy(struct nfs_pgio_header *); int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); -int nfs_initiate_pgio(struct rpc_clnt *, struct nfs_pgio_header *, - const struct rpc_call_ops *, int, int); +int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, + struct rpc_cred *cred, const struct nfs_rpc_ops *rpc_ops, + const struct rpc_call_ops *call_ops, int how, int flags); void nfs_free_request(struct nfs_page *req); +struct nfs_pgio_mirror * +nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc); static inline void nfs_iocounter_init(struct nfs_io_counter *c) { @@ -254,6 +262,12 @@ static inline void nfs_iocounter_init(struct nfs_io_counter *c) atomic_set(&c->io_count, 0); } +static inline bool nfs_pgio_has_mirroring(struct nfs_pageio_descriptor *desc) +{ + WARN_ON_ONCE(desc->pg_mirror_count < 1); + return desc->pg_mirror_count > 1; +} + /* nfs2xdr.c */ extern struct rpc_procinfo nfs_procedures[]; extern int nfs2_decode_dirent(struct xdr_stream *, @@ -377,7 +391,7 @@ extern struct rpc_stat nfs_rpcstat; extern int __init register_nfs_fs(void); extern void __exit unregister_nfs_fs(void); -extern void nfs_sb_active(struct super_block *sb); +extern bool nfs_sb_active(struct super_block *sb); extern void nfs_sb_deactive(struct super_block *sb); /* namespace.c */ @@ -428,6 +442,7 @@ extern void nfs_write_prepare(struct rpc_task *task, void *calldata); extern void nfs_commit_prepare(struct rpc_task *task, void *calldata); extern int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, + const struct nfs_rpc_ops *nfs_ops, const struct rpc_call_ops *call_ops, int how, int flags); extern void nfs_init_commit(struct nfs_commit_data *data, @@ -441,13 +456,15 @@ int nfs_scan_commit(struct inode *inode, struct list_head *dst, struct nfs_commit_info *cinfo); void nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo); + struct nfs_commit_info *cinfo, + u32 ds_commit_idx); int nfs_write_need_commit(struct nfs_pgio_header *); int nfs_generic_commit_list(struct inode *inode, struct list_head *head, int how, struct nfs_commit_info *cinfo); void nfs_retry_commit(struct list_head *page_list, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo); + struct nfs_commit_info *cinfo, + u32 ds_commit_idx); void nfs_commitdata_release(struct nfs_commit_data *data); void nfs_request_add_commit_list(struct nfs_page *req, struct list_head *dst, struct nfs_commit_info *cinfo); @@ -458,6 +475,7 @@ void nfs_init_cinfo(struct nfs_commit_info *cinfo, struct nfs_direct_req *dreq); int nfs_key_timeout_notify(struct file *filp, struct inode *inode); bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx); +void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio); #ifdef CONFIG_MIGRATION extern int nfs_migrate_page(struct address_space *, @@ -481,6 +499,7 @@ static inline void nfs_inode_dio_wait(struct inode *inode) inode_dio_wait(inode); } extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq); +extern void nfs_direct_set_resched_writes(struct nfs_direct_req *dreq); /* nfs4proc.c */ extern void __nfs4_read_done_cb(struct nfs_pgio_header *); @@ -494,6 +513,26 @@ extern int nfs41_walk_client_list(struct nfs_client *clp, struct nfs_client **result, struct rpc_cred *cred); +static inline struct inode *nfs_igrab_and_active(struct inode *inode) +{ + inode = igrab(inode); + if (inode != NULL && !nfs_sb_active(inode->i_sb)) { + iput(inode); + inode = NULL; + } + return inode; +} + +static inline void nfs_iput_and_deactive(struct inode *inode) +{ + if (inode != NULL) { + struct super_block *sb = inode->i_sb; + + iput(inode); + nfs_sb_deactive(sb); + } +} + /* * Determine the device name as a string */ diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 5f61b83..b4e03ed 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -481,7 +481,8 @@ out_overflow: * void; * }; */ -static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result) +static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result, + __u32 *op_status) { enum nfs_stat status; int error; @@ -489,6 +490,8 @@ static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result) error = decode_stat(xdr, &status); if (unlikely(error)) goto out; + if (op_status) + *op_status = status; if (status != NFS_OK) goto out_default; error = decode_fattr(xdr, result); @@ -808,7 +811,7 @@ out_default: static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, struct xdr_stream *xdr, struct nfs_fattr *result) { - return decode_attrstat(xdr, result); + return decode_attrstat(xdr, result, NULL); } static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, struct xdr_stream *xdr, @@ -865,6 +868,7 @@ static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr, error = decode_stat(xdr, &status); if (unlikely(error)) goto out; + result->op_status = status; if (status != NFS_OK) goto out_default; error = decode_fattr(xdr, result->fattr); @@ -882,7 +886,7 @@ static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr, { /* All NFSv2 writes are "file sync" writes */ result->verf->committed = NFS_FILE_SYNC; - return decode_attrstat(xdr, result->fattr); + return decode_attrstat(xdr, result->fattr, &result->op_status); } /** diff --git a/fs/nfs/nfs3_fs.h b/fs/nfs/nfs3_fs.h index 333ae40..e134d65 100644 --- a/fs/nfs/nfs3_fs.h +++ b/fs/nfs/nfs3_fs.h @@ -30,5 +30,7 @@ struct nfs_server *nfs3_create_server(struct nfs_mount_info *, struct nfs_subver struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, rpc_authflavor_t); +/* nfs3super.c */ +extern struct nfs_subversion nfs_v3; #endif /* __LINUX_FS_NFS_NFS3_FS_H */ diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c index 8c1b437..9e9fa34 100644 --- a/fs/nfs/nfs3client.c +++ b/fs/nfs/nfs3client.c @@ -1,5 +1,6 @@ #include <linux/nfs_fs.h> #include <linux/nfs_mount.h> +#include <linux/sunrpc/addr.h> #include "internal.h" #include "nfs3_fs.h" @@ -64,3 +65,43 @@ struct nfs_server *nfs3_clone_server(struct nfs_server *source, nfs_init_server_aclclient(server); return server; } + +/* + * Set up a pNFS Data Server client over NFSv3. + * + * Return any existing nfs_client that matches server address,port,version + * and minorversion. + * + * For a new nfs_client, use a soft mount (default), a low retrans and a + * low timeout interval so that if a connection is lost, we retry through + * the MDS. + */ +struct nfs_client *nfs3_set_ds_client(struct nfs_client *mds_clp, + const struct sockaddr *ds_addr, int ds_addrlen, + int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans, + rpc_authflavor_t au_flavor) +{ + struct nfs_client_initdata cl_init = { + .addr = ds_addr, + .addrlen = ds_addrlen, + .nfs_mod = &nfs_v3, + .proto = ds_proto, + .net = mds_clp->cl_net, + }; + struct rpc_timeout ds_timeout; + struct nfs_client *clp; + char buf[INET6_ADDRSTRLEN + 1]; + + /* fake a hostname because lockd wants it */ + if (rpc_ntop(ds_addr, buf, sizeof(buf)) <= 0) + return ERR_PTR(-EINVAL); + cl_init.hostname = buf; + + /* Use the MDS nfs_client cl_ipaddr. */ + nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); + clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr, + au_flavor); + + return clp; +} +EXPORT_SYMBOL_GPL(nfs3_set_ds_client); diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 524f9f8..78e557c 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -800,6 +800,9 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) { struct inode *inode = hdr->inode; + if (hdr->pgio_done_cb != NULL) + return hdr->pgio_done_cb(task, hdr); + if (nfs3_async_handle_jukebox(task, inode)) return -EAGAIN; @@ -825,6 +828,9 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) { struct inode *inode = hdr->inode; + if (hdr->pgio_done_cb != NULL) + return hdr->pgio_done_cb(task, hdr); + if (nfs3_async_handle_jukebox(task, inode)) return -EAGAIN; if (task->tk_status >= 0) @@ -845,6 +851,9 @@ static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commi static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data) { + if (data->commit_done_cb != NULL) + return data->commit_done_cb(task, data); + if (nfs3_async_handle_jukebox(task, data->inode)) return -EAGAIN; nfs_refresh_inode(data->inode, data->res.fattr); diff --git a/fs/nfs/nfs3super.c b/fs/nfs/nfs3super.c index 6af29c2..5c4394e 100644 --- a/fs/nfs/nfs3super.c +++ b/fs/nfs/nfs3super.c @@ -7,7 +7,7 @@ #include "nfs3_fs.h" #include "nfs.h" -static struct nfs_subversion nfs_v3 = { +struct nfs_subversion nfs_v3 = { .owner = THIS_MODULE, .nfs_fs = &nfs_fs_type, .rpc_vers = &nfs_version3, diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 8f4cbe7..2a932fd 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1636,6 +1636,7 @@ static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, error = decode_post_op_attr(xdr, result->fattr); if (unlikely(error)) goto out; + result->op_status = status; if (status != NFS3_OK) goto out_status; error = decode_read3resok(xdr, result); @@ -1708,6 +1709,7 @@ static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, error = decode_wcc_data(xdr, result->fattr); if (unlikely(error)) goto out; + result->op_status = status; if (status != NFS3_OK) goto out_status; error = decode_write3resok(xdr, result); @@ -2323,6 +2325,7 @@ static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, error = decode_wcc_data(xdr, result->fattr); if (unlikely(error)) goto out; + result->op_status = status; if (status != NFS3_OK) goto out_status; error = decode_writeverf3(xdr, &result->verf->verifier); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index a081787..fdef424 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -44,6 +44,7 @@ enum nfs4_client_state { #define NFS4_RENEW_TIMEOUT 0x01 #define NFS4_RENEW_DELEGATION_CB 0x02 +struct nfs_seqid_counter; struct nfs4_minor_version_ops { u32 minor_version; unsigned init_caps; @@ -56,6 +57,8 @@ struct nfs4_minor_version_ops { struct nfs_fsinfo *); void (*free_lock_state)(struct nfs_server *, struct nfs4_lock_state *); + struct nfs_seqid * + (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); const struct rpc_call_ops *call_sync_ops; const struct nfs4_state_recovery_ops *reboot_recovery_ops; const struct nfs4_state_recovery_ops *nograce_recovery_ops; @@ -443,6 +446,12 @@ extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); extern void nfs_release_seqid(struct nfs_seqid *seqid); extern void nfs_free_seqid(struct nfs_seqid *seqid); +extern int nfs40_setup_sequence(struct nfs4_slot_table *tbl, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task); +extern int nfs4_sequence_done(struct rpc_task *task, + struct nfs4_sequence_res *res); extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 953daa4..8646af9 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -639,7 +639,7 @@ int nfs41_walk_client_list(struct nfs_client *new, prev = pos; status = nfs_wait_client_init_complete(pos); - if (status == 0) { + if (pos->cl_cons_state == NFS_CS_SESSION_INITING) { nfs4_schedule_lease_recovery(pos); status = nfs4_wait_clnt_recover(pos); } @@ -849,14 +849,15 @@ error: */ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, const struct sockaddr *ds_addr, int ds_addrlen, - int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) + int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans, + u32 minor_version, rpc_authflavor_t au_flavor) { struct nfs_client_initdata cl_init = { .addr = ds_addr, .addrlen = ds_addrlen, .nfs_mod = &nfs_v4, .proto = ds_proto, - .minorversion = mds_clp->cl_minorversion, + .minorversion = minor_version, .net = mds_clp->cl_net, }; struct rpc_timeout ds_timeout; @@ -874,7 +875,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, */ nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr, - mds_clp->cl_rpcclient->cl_auth->au_flavor); + au_flavor); dprintk("<-- %s %p\n", __func__, clp); return clp; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c347705..2e7c9f7 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -495,12 +495,11 @@ static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) args->sa_privileged = 1; } -static int nfs40_setup_sequence(const struct nfs_server *server, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) +int nfs40_setup_sequence(struct nfs4_slot_table *tbl, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) { - struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl; struct nfs4_slot *slot; /* slot already allocated? */ @@ -535,6 +534,7 @@ out_sleep: spin_unlock(&tbl->slot_tbl_lock); return -EAGAIN; } +EXPORT_SYMBOL_GPL(nfs40_setup_sequence); static int nfs40_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) @@ -694,8 +694,7 @@ out_retry: } EXPORT_SYMBOL_GPL(nfs41_sequence_done); -static int nfs4_sequence_done(struct rpc_task *task, - struct nfs4_sequence_res *res) +int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { if (res->sr_slot == NULL) return 1; @@ -703,6 +702,7 @@ static int nfs4_sequence_done(struct rpc_task *task, return nfs40_sequence_done(task, res); return nfs41_sequence_done(task, res); } +EXPORT_SYMBOL_GPL(nfs4_sequence_done); int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, @@ -777,7 +777,8 @@ static int nfs4_setup_sequence(const struct nfs_server *server, int ret = 0; if (!session) - return nfs40_setup_sequence(server, args, res, task); + return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, + args, res, task); dprintk("--> %s clp %p session %p sr_slot %u\n", __func__, session->clp, session, res->sr_slot ? @@ -818,14 +819,16 @@ static int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_res *res, struct rpc_task *task) { - return nfs40_setup_sequence(server, args, res, task); + return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, + args, res, task); } -static int nfs4_sequence_done(struct rpc_task *task, - struct nfs4_sequence_res *res) +int nfs4_sequence_done(struct rpc_task *task, + struct nfs4_sequence_res *res) { return nfs40_sequence_done(task, res); } +EXPORT_SYMBOL_GPL(nfs4_sequence_done); #endif /* !CONFIG_NFS_V4_1 */ @@ -937,6 +940,31 @@ static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, return true; } +static u32 +nfs4_map_atomic_open_share(struct nfs_server *server, + fmode_t fmode, int openflags) +{ + u32 res = 0; + + switch (fmode & (FMODE_READ | FMODE_WRITE)) { + case FMODE_READ: + res = NFS4_SHARE_ACCESS_READ; + break; + case FMODE_WRITE: + res = NFS4_SHARE_ACCESS_WRITE; + break; + case FMODE_READ|FMODE_WRITE: + res = NFS4_SHARE_ACCESS_BOTH; + } + if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) + goto out; + /* Want no delegation if we're using O_DIRECT */ + if (openflags & O_DIRECT) + res |= NFS4_SHARE_WANT_NO_DELEG; +out: + return res; +} + static enum open_claim_type4 nfs4_map_atomic_open_claim(struct nfs_server *server, enum open_claim_type4 claim) @@ -977,6 +1005,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, struct dentry *parent = dget_parent(dentry); struct inode *dir = parent->d_inode; struct nfs_server *server = NFS_SERVER(dir); + struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); struct nfs4_opendata *p; p = kzalloc(sizeof(*p), gfp_mask); @@ -987,8 +1016,9 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, if (IS_ERR(p->f_label)) goto err_free_p; - p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); - if (p->o_arg.seqid == NULL) + alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; + p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); + if (IS_ERR(p->o_arg.seqid)) goto err_free_label; nfs_sb_active(dentry->d_sb); p->dentry = dget(dentry); @@ -997,6 +1027,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, atomic_inc(&sp->so_count); p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); + p->o_arg.share_access = nfs4_map_atomic_open_share(server, + fmode, flags); /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS * will return permission denied for all bits until close */ if (!(flags & O_EXCL)) { @@ -1167,6 +1199,16 @@ static bool nfs_need_update_open_stateid(struct nfs4_state *state, return false; } +static void nfs_resync_open_stateid_locked(struct nfs4_state *state) +{ + if (state->n_wronly) + set_bit(NFS_O_WRONLY_STATE, &state->flags); + if (state->n_rdonly) + set_bit(NFS_O_RDONLY_STATE, &state->flags); + if (state->n_rdwr) + set_bit(NFS_O_RDWR_STATE, &state->flags); +} + static void nfs_clear_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) { @@ -1185,8 +1227,12 @@ static void nfs_clear_open_stateid_locked(struct nfs4_state *state, } if (stateid == NULL) return; - if (!nfs_need_update_open_stateid(state, stateid)) + /* Handle races with OPEN */ + if (!nfs4_stateid_match_other(stateid, &state->open_stateid) || + !nfs4_stateid_is_newer(stateid, &state->open_stateid)) { + nfs_resync_open_stateid_locked(state); return; + } if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) nfs4_stateid_copy(&state->stateid, stateid); nfs4_stateid_copy(&state->open_stateid, stateid); @@ -1281,6 +1327,23 @@ no_delegation: return ret; } +static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, + const nfs4_stateid *stateid) +{ + struct nfs4_state *state = lsp->ls_state; + bool ret = false; + + spin_lock(&state->state_lock); + if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) + goto out_noupdate; + if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) + goto out_noupdate; + nfs4_stateid_copy(&lsp->ls_stateid, stateid); + ret = true; +out_noupdate: + spin_unlock(&state->state_lock); + return ret; +} static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) { @@ -1679,8 +1742,8 @@ static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) { struct nfs4_opendata *data = calldata; - nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args, - &data->c_res.seq_res, task); + nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, + &data->c_arg.seq_args, &data->c_res.seq_res, task); } static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) @@ -2587,6 +2650,11 @@ static void nfs4_close_done(struct rpc_task *task, void *data) case -NFS4ERR_OLD_STATEID: case -NFS4ERR_BAD_STATEID: case -NFS4ERR_EXPIRED: + if (!nfs4_stateid_match(&calldata->arg.stateid, + &state->stateid)) { + rpc_restart_call_prepare(task); + goto out_release; + } if (calldata->arg.fmode == 0) break; default: @@ -2619,6 +2687,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); + nfs4_stateid_copy(&calldata->arg.stateid, &state->stateid); /* Calculate the change in open mode */ calldata->arg.fmode = 0; if (state->n_rdwr == 0) { @@ -2653,6 +2722,9 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) goto out_wait; } } + calldata->arg.share_access = + nfs4_map_atomic_open_share(NFS_SERVER(inode), + calldata->arg.fmode, 0); nfs_fattr_init(calldata->res.fattr); calldata->timestamp = jiffies; @@ -2675,45 +2747,10 @@ static const struct rpc_call_ops nfs4_close_ops = { .rpc_release = nfs4_free_closedata, }; -static bool nfs4_state_has_opener(struct nfs4_state *state) -{ - /* first check existing openers */ - if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 && - state->n_rdonly != 0) - return true; - - if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 && - state->n_wronly != 0) - return true; - - if (test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 && - state->n_rdwr != 0) - return true; - - return false; -} - static bool nfs4_roc(struct inode *inode) { - struct nfs_inode *nfsi = NFS_I(inode); - struct nfs_open_context *ctx; - struct nfs4_state *state; - - spin_lock(&inode->i_lock); - list_for_each_entry(ctx, &nfsi->open_files, list) { - state = ctx->state; - if (state == NULL) - continue; - if (nfs4_state_has_opener(state)) { - spin_unlock(&inode->i_lock); - return false; - } - } - spin_unlock(&inode->i_lock); - - if (nfs4_check_delegation(inode, FMODE_READ)) + if (!nfs_have_layout(inode)) return false; - return pnfs_roc(inode); } @@ -2731,6 +2768,7 @@ static bool nfs4_roc(struct inode *inode) int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) { struct nfs_server *server = NFS_SERVER(state->inode); + struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); struct nfs4_closedata *calldata; struct nfs4_state_owner *sp = state->owner; struct rpc_task *task; @@ -2757,10 +2795,10 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) calldata->inode = state->inode; calldata->state = state; calldata->arg.fh = NFS_FH(state->inode); - calldata->arg.stateid = &state->open_stateid; /* Serialization for the sequence id */ - calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); - if (calldata->arg.seqid == NULL) + alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; + calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); + if (IS_ERR(calldata->arg.seqid)) goto out_free_calldata; calldata->arg.fmode = 0; calldata->arg.bitmask = server->cache_consistency_bitmask; @@ -5137,9 +5175,13 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) static void nfs4_delegreturn_release(void *calldata) { struct nfs4_delegreturndata *data = calldata; + struct inode *inode = data->inode; - if (data->roc) - pnfs_roc_release(data->inode); + if (inode) { + if (data->roc) + pnfs_roc_release(inode); + nfs_iput_and_deactive(inode); + } kfree(calldata); } @@ -5196,9 +5238,9 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co nfs_fattr_init(data->res.fattr); data->timestamp = jiffies; data->rpc_status = 0; - data->inode = inode; - data->roc = list_empty(&NFS_I(inode)->open_files) ? - pnfs_roc(inode) : false; + data->inode = nfs_igrab_and_active(inode); + if (data->inode) + data->roc = nfs4_roc(inode); task_setup_data.callback_data = data; msg.rpc_argp = &data->args; @@ -5353,7 +5395,6 @@ static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, p->arg.fl = &p->fl; p->arg.seqid = seqid; p->res.seqid = seqid; - p->arg.stateid = &lsp->ls_stateid; p->lsp = lsp; atomic_inc(&lsp->ls_count); /* Ensure we don't close file until we're done freeing locks! */ @@ -5380,14 +5421,18 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) return; switch (task->tk_status) { case 0: - nfs4_stateid_copy(&calldata->lsp->ls_stateid, - &calldata->res.stateid); renew_lease(calldata->server, calldata->timestamp); - break; + do_vfs_lock(calldata->fl.fl_file, &calldata->fl); + if (nfs4_update_lock_stateid(calldata->lsp, + &calldata->res.stateid)) + break; case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OLD_STATEID: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_EXPIRED: + if (!nfs4_stateid_match(&calldata->arg.stateid, + &calldata->lsp->ls_stateid)) + rpc_restart_call_prepare(task); break; default: if (nfs4_async_handle_error(task, calldata->server, @@ -5403,6 +5448,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data) if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) goto out_wait; + nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { /* Note: exit _without_ running nfs4_locku_done */ goto out_no_action; @@ -5473,6 +5519,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock * struct nfs_seqid *seqid; struct nfs4_lock_state *lsp; struct rpc_task *task; + struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); int status = 0; unsigned char fl_flags = request->fl_flags; @@ -5496,9 +5543,10 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock * lsp = request->fl_u.nfs4_fl.owner; if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) goto out; - seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); + alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; + seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); status = -ENOMEM; - if (seqid == NULL) + if (IS_ERR(seqid)) goto out; task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); status = PTR_ERR(task); @@ -5531,6 +5579,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, struct nfs4_lockdata *p; struct inode *inode = lsp->ls_state->inode; struct nfs_server *server = NFS_SERVER(inode); + struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); p = kzalloc(sizeof(*p), gfp_mask); if (p == NULL) @@ -5539,12 +5588,12 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, p->arg.fh = NFS_FH(inode); p->arg.fl = &p->fl; p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); - if (p->arg.open_seqid == NULL) + if (IS_ERR(p->arg.open_seqid)) goto out_free; - p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); - if (p->arg.lock_seqid == NULL) + alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; + p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); + if (IS_ERR(p->arg.lock_seqid)) goto out_free_seqid; - p->arg.lock_stateid = &lsp->ls_stateid; p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; p->arg.lock_owner.id = lsp->ls_seqid.owner_id; p->arg.lock_owner.s_dev = server->s_dev; @@ -5571,15 +5620,19 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) goto out_wait; /* Do we need to do an open_to_lock_owner? */ - if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { + if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { goto out_release_lock_seqid; } - data->arg.open_stateid = &state->open_stateid; + nfs4_stateid_copy(&data->arg.open_stateid, + &state->open_stateid); data->arg.new_lock_owner = 1; data->res.open_seqid = data->arg.open_seqid; - } else + } else { data->arg.new_lock_owner = 0; + nfs4_stateid_copy(&data->arg.lock_stateid, + &data->lsp->ls_stateid); + } if (!nfs4_valid_open_stateid(state)) { data->rpc_status = -EBADF; task->tk_action = NULL; @@ -5603,6 +5656,7 @@ out_wait: static void nfs4_lock_done(struct rpc_task *task, void *calldata) { struct nfs4_lockdata *data = calldata; + struct nfs4_lock_state *lsp = data->lsp; dprintk("%s: begin!\n", __func__); @@ -5610,18 +5664,36 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) return; data->rpc_status = task->tk_status; - if (data->arg.new_lock_owner != 0) { - if (data->rpc_status == 0) - nfs_confirm_seqid(&data->lsp->ls_seqid, 0); - else - goto out; - } - if (data->rpc_status == 0) { - nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); - set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); - renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); + switch (task->tk_status) { + case 0: + renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), + data->timestamp); + if (data->arg.new_lock) { + data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); + if (do_vfs_lock(data->fl.fl_file, &data->fl) < 0) { + rpc_restart_call_prepare(task); + break; + } + } + if (data->arg.new_lock_owner != 0) { + nfs_confirm_seqid(&lsp->ls_seqid, 0); + nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); + set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); + } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) + rpc_restart_call_prepare(task); + break; + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_OLD_STATEID: + case -NFS4ERR_STALE_STATEID: + case -NFS4ERR_EXPIRED: + if (data->arg.new_lock_owner != 0) { + if (!nfs4_stateid_match(&data->arg.open_stateid, + &lsp->ls_state->open_stateid)) + rpc_restart_call_prepare(task); + } else if (!nfs4_stateid_match(&data->arg.lock_stateid, + &lsp->ls_stateid)) + rpc_restart_call_prepare(task); } -out: dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); } @@ -5702,7 +5774,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f if (recovery_type == NFS_LOCK_RECLAIM) data->arg.reclaim = NFS_LOCK_RECLAIM; nfs4_set_sequence_privileged(&data->arg.seq_args); - } + } else + data->arg.new_lock = 1; task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -5826,10 +5899,8 @@ static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *reques static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) { - struct nfs4_state_owner *sp = state->owner; struct nfs_inode *nfsi = NFS_I(state->inode); unsigned char fl_flags = request->fl_flags; - unsigned int seq; int status = -ENOLCK; if ((fl_flags & FL_POSIX) && @@ -5849,25 +5920,11 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock /* ...but avoid races with delegation recall... */ request->fl_flags = fl_flags & ~FL_SLEEP; status = do_vfs_lock(request->fl_file, request); - goto out_unlock; - } - seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); - up_read(&nfsi->rwsem); - status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); - if (status != 0) + up_read(&nfsi->rwsem); goto out; - down_read(&nfsi->rwsem); - if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) { - status = -NFS4ERR_DELAY; - goto out_unlock; } - /* Note: we always want to sleep here! */ - request->fl_flags = fl_flags | FL_SLEEP; - if (do_vfs_lock(request->fl_file, request) < 0) - printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " - "manager!\n", __func__); -out_unlock: up_read(&nfsi->rwsem); + status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); out: request->fl_flags = fl_flags; return status; @@ -5974,8 +6031,8 @@ static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata { struct nfs_release_lockowner_data *data = calldata; struct nfs_server *server = data->server; - nfs40_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, task); + nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, + &data->args.seq_args, &data->res.seq_res, task); data->args.lock_owner.clientid = server->nfs_client->cl_clientid; data->timestamp = jiffies; } @@ -7537,6 +7594,7 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) return; if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, NFS_I(lgp->args.inode)->layout, + &lgp->args.range, lgp->args.ctx->state)) { rpc_exit(task, NFS4_OK); } @@ -7792,9 +7850,13 @@ static void nfs4_layoutreturn_release(void *calldata) spin_lock(&lo->plh_inode->i_lock); if (lrp->res.lrs_present) pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); + pnfs_clear_layoutreturn_waitbit(lo); + clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, &lo->plh_flags); + rpc_wake_up(&NFS_SERVER(lo->plh_inode)->roc_rpcwaitq); lo->plh_block_lgets--; spin_unlock(&lo->plh_inode->i_lock); pnfs_put_layout_hdr(lrp->args.layout); + nfs_iput_and_deactive(lrp->inode); kfree(calldata); dprintk("<-- %s\n", __func__); } @@ -7805,7 +7867,7 @@ static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { .rpc_release = nfs4_layoutreturn_release, }; -int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) +int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) { struct rpc_task *task; struct rpc_message msg = { @@ -7820,14 +7882,23 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) .callback_ops = &nfs4_layoutreturn_call_ops, .callback_data = lrp, }; - int status; + int status = 0; dprintk("--> %s\n", __func__); + if (!sync) { + lrp->inode = nfs_igrab_and_active(lrp->args.inode); + if (!lrp->inode) { + nfs4_layoutreturn_release(lrp); + return -EAGAIN; + } + task_setup_data.flags |= RPC_TASK_ASYNC; + } nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); - status = task->tk_status; + if (sync) + status = task->tk_status; trace_nfs4_layoutreturn(lrp->args.inode, status); dprintk("<-- %s status=%d\n", __func__, status); rpc_put_task(task); @@ -7921,6 +7992,7 @@ static void nfs4_layoutcommit_release(void *calldata) nfs_post_op_update_inode_force_wcc(data->args.inode, data->res.fattr); put_rpccred(data->cred); + nfs_iput_and_deactive(data->inode); kfree(data); } @@ -7945,7 +8017,6 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) .rpc_message = &msg, .callback_ops = &nfs4_layoutcommit_ops, .callback_data = data, - .flags = RPC_TASK_ASYNC, }; struct rpc_task *task; int status = 0; @@ -7956,18 +8027,21 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) data->args.lastbytewritten, data->args.inode->i_ino); + if (!sync) { + data->inode = nfs_igrab_and_active(data->args.inode); + if (data->inode == NULL) { + nfs4_layoutcommit_release(data); + return -EAGAIN; + } + task_setup_data.flags = RPC_TASK_ASYNC; + } nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); - if (sync == false) - goto out; - status = nfs4_wait_for_completion_rpc_task(task); - if (status != 0) - goto out; - status = task->tk_status; + if (sync) + status = task->tk_status; trace_nfs4_layoutcommit(data->args.inode, status); -out: dprintk("%s: status %d\n", __func__, status); rpc_put_task(task); return status; @@ -8395,6 +8469,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { .match_stateid = nfs4_match_stateid, .find_root_sec = nfs4_find_root_sec, .free_lock_state = nfs4_release_lockowner, + .alloc_seqid = nfs_alloc_seqid, .call_sync_ops = &nfs40_call_sync_ops, .reboot_recovery_ops = &nfs40_reboot_recovery_ops, .nograce_recovery_ops = &nfs40_nograce_recovery_ops, @@ -8403,6 +8478,12 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { }; #if defined(CONFIG_NFS_V4_1) +static struct nfs_seqid * +nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) +{ + return NULL; +} + static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .minor_version = 1, .init_caps = NFS_CAP_READDIRPLUS @@ -8416,6 +8497,7 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, .free_lock_state = nfs41_free_lock_state, + .alloc_seqid = nfs_alloc_no_seqid, .call_sync_ops = &nfs41_call_sync_ops, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, @@ -8442,6 +8524,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { .find_root_sec = nfs41_find_root_sec, .free_lock_state = nfs41_free_lock_state, .call_sync_ops = &nfs41_call_sync_ops, + .alloc_seqid = nfs_alloc_no_seqid, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, .state_renewal_ops = &nfs41_state_renewal_ops, diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 5194933..5ad908e 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1003,11 +1003,11 @@ struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_m struct nfs_seqid *new; new = kmalloc(sizeof(*new), gfp_mask); - if (new != NULL) { - new->sequence = counter; - INIT_LIST_HEAD(&new->list); - new->task = NULL; - } + if (new == NULL) + return ERR_PTR(-ENOMEM); + new->sequence = counter; + INIT_LIST_HEAD(&new->list); + new->task = NULL; return new; } @@ -1015,7 +1015,7 @@ void nfs_release_seqid(struct nfs_seqid *seqid) { struct nfs_seqid_counter *sequence; - if (list_empty(&seqid->list)) + if (seqid == NULL || list_empty(&seqid->list)) return; sequence = seqid->sequence; spin_lock(&sequence->lock); @@ -1071,13 +1071,15 @@ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid) void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid) { - struct nfs4_state_owner *sp = container_of(seqid->sequence, - struct nfs4_state_owner, so_seqid); - struct nfs_server *server = sp->so_server; + struct nfs4_state_owner *sp; + + if (seqid == NULL) + return; + sp = container_of(seqid->sequence, struct nfs4_state_owner, so_seqid); if (status == -NFS4ERR_BAD_SEQID) nfs4_drop_state_owner(sp); - if (!nfs4_has_session(server->nfs_client)) + if (!nfs4_has_session(sp->so_server->nfs_client)) nfs_increment_seqid(status, seqid); } @@ -1088,14 +1090,18 @@ void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid) */ void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid) { - nfs_increment_seqid(status, seqid); + if (seqid != NULL) + nfs_increment_seqid(status, seqid); } int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task) { - struct nfs_seqid_counter *sequence = seqid->sequence; + struct nfs_seqid_counter *sequence; int status = 0; + if (seqid == NULL) + goto out; + sequence = seqid->sequence; spin_lock(&sequence->lock); seqid->task = task; if (list_empty(&seqid->list)) @@ -1106,6 +1112,7 @@ int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task) status = -EAGAIN; unlock: spin_unlock(&sequence->lock); +out: return status; } @@ -1366,49 +1373,55 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_ struct nfs_inode *nfsi = NFS_I(inode); struct file_lock *fl; int status = 0; + struct file_lock_context *flctx = inode->i_flctx; + struct list_head *list; - if (inode->i_flock == NULL) + if (flctx == NULL) return 0; + list = &flctx->flc_posix; + /* Guard against delegation returns and new lock/unlock calls */ down_write(&nfsi->rwsem); - /* Protect inode->i_flock using the BKL */ - spin_lock(&inode->i_lock); - for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) { - if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK))) - continue; + spin_lock(&flctx->flc_lock); +restart: + list_for_each_entry(fl, list, fl_list) { if (nfs_file_open_context(fl->fl_file)->state != state) continue; - spin_unlock(&inode->i_lock); + spin_unlock(&flctx->flc_lock); status = ops->recover_lock(state, fl); switch (status) { - case 0: - break; - case -ESTALE: - case -NFS4ERR_ADMIN_REVOKED: - case -NFS4ERR_STALE_STATEID: - case -NFS4ERR_BAD_STATEID: - case -NFS4ERR_EXPIRED: - case -NFS4ERR_NO_GRACE: - case -NFS4ERR_STALE_CLIENTID: - case -NFS4ERR_BADSESSION: - case -NFS4ERR_BADSLOT: - case -NFS4ERR_BAD_HIGH_SLOT: - case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: - goto out; - default: - printk(KERN_ERR "NFS: %s: unhandled error %d\n", - __func__, status); - case -ENOMEM: - case -NFS4ERR_DENIED: - case -NFS4ERR_RECLAIM_BAD: - case -NFS4ERR_RECLAIM_CONFLICT: - /* kill_proc(fl->fl_pid, SIGLOST, 1); */ - status = 0; + case 0: + break; + case -ESTALE: + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_STALE_STATEID: + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_EXPIRED: + case -NFS4ERR_NO_GRACE: + case -NFS4ERR_STALE_CLIENTID: + case -NFS4ERR_BADSESSION: + case -NFS4ERR_BADSLOT: + case -NFS4ERR_BAD_HIGH_SLOT: + case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: + goto out; + default: + pr_err("NFS: %s: unhandled error %d\n", + __func__, status); + case -ENOMEM: + case -NFS4ERR_DENIED: + case -NFS4ERR_RECLAIM_BAD: + case -NFS4ERR_RECLAIM_CONFLICT: + /* kill_proc(fl->fl_pid, SIGLOST, 1); */ + status = 0; } - spin_lock(&inode->i_lock); + spin_lock(&flctx->flc_lock); } - spin_unlock(&inode->i_lock); + if (list == &flctx->flc_posix) { + list = &flctx->flc_flock; + goto restart; + } + spin_unlock(&flctx->flc_lock); out: up_write(&nfsi->rwsem); return status; diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c index ab30a3a..75090fe 100644 --- a/fs/nfs/nfs4super.c +++ b/fs/nfs/nfs4super.c @@ -345,6 +345,9 @@ out: static void __exit exit_nfs_v4(void) { + /* Not called in the _init(), conditionally loaded */ + nfs4_pnfs_v3_ds_connect_unload(); + unregister_nfs_version(&nfs_v4); nfs4_unregister_sysctl(); nfs_idmap_quit(); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index cb4376b..e23a0a6 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -946,7 +946,10 @@ static void encode_uint64(struct xdr_stream *xdr, u64 n) static void encode_nfs4_seqid(struct xdr_stream *xdr, const struct nfs_seqid *seqid) { - encode_uint32(xdr, seqid->sequence->counter); + if (seqid != NULL) + encode_uint32(xdr, seqid->sequence->counter); + else + encode_uint32(xdr, 0); } static void encode_compound_hdr(struct xdr_stream *xdr, @@ -1125,7 +1128,7 @@ static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg { encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); encode_nfs4_seqid(xdr, arg->seqid); - encode_nfs4_stateid(xdr, arg->stateid); + encode_nfs4_stateid(xdr, &arg->stateid); } static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) @@ -1301,12 +1304,12 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args *p = cpu_to_be32(args->new_lock_owner); if (args->new_lock_owner){ encode_nfs4_seqid(xdr, args->open_seqid); - encode_nfs4_stateid(xdr, args->open_stateid); + encode_nfs4_stateid(xdr, &args->open_stateid); encode_nfs4_seqid(xdr, args->lock_seqid); encode_lockowner(xdr, &args->lock_owner); } else { - encode_nfs4_stateid(xdr, args->lock_stateid); + encode_nfs4_stateid(xdr, &args->lock_stateid); encode_nfs4_seqid(xdr, args->lock_seqid); } } @@ -1330,7 +1333,7 @@ static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *ar encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); encode_nfs4_seqid(xdr, args->seqid); - encode_nfs4_stateid(xdr, args->stateid); + encode_nfs4_stateid(xdr, &args->stateid); p = reserve_space(xdr, 16); p = xdr_encode_hyper(p, args->fl->fl_start); xdr_encode_hyper(p, nfs4_lock_length(args->fl)); @@ -1348,24 +1351,12 @@ static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struc encode_string(xdr, name->len, name->name); } -static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) +static void encode_share_access(struct xdr_stream *xdr, u32 share_access) { __be32 *p; p = reserve_space(xdr, 8); - switch (fmode & (FMODE_READ|FMODE_WRITE)) { - case FMODE_READ: - *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); - break; - case FMODE_WRITE: - *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); - break; - case FMODE_READ|FMODE_WRITE: - *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); - break; - default: - *p++ = cpu_to_be32(0); - } + *p++ = cpu_to_be32(share_access); *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ } @@ -1377,7 +1368,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena * owner 4 = 32 */ encode_nfs4_seqid(xdr, arg->seqid); - encode_share_access(xdr, arg->fmode); + encode_share_access(xdr, arg->share_access); p = reserve_space(xdr, 36); p = xdr_encode_hyper(p, arg->clientid); *p++ = cpu_to_be32(24); @@ -1530,9 +1521,9 @@ static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_co static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) { encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); - encode_nfs4_stateid(xdr, arg->stateid); + encode_nfs4_stateid(xdr, &arg->stateid); encode_nfs4_seqid(xdr, arg->seqid); - encode_share_access(xdr, arg->fmode); + encode_share_access(xdr, arg->share_access); } static void @@ -1801,9 +1792,8 @@ static void encode_create_session(struct xdr_stream *xdr, struct compound_hdr *hdr) { __be32 *p; - char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; - uint32_t len; struct nfs_client *clp = args->client; + struct rpc_clnt *clnt = clp->cl_rpcclient; struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); u32 max_resp_sz_cached; @@ -1814,11 +1804,8 @@ static void encode_create_session(struct xdr_stream *xdr, max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; - len = scnprintf(machine_name, sizeof(machine_name), "%s", - clp->cl_ipaddr); - encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); - p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12); + p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); p = xdr_encode_hyper(p, clp->cl_clientid); *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ *p++ = cpu_to_be32(args->flags); /*flags */ @@ -1847,7 +1834,7 @@ static void encode_create_session(struct xdr_stream *xdr, /* authsys_parms rfc1831 */ *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */ - p = xdr_encode_opaque(p, machine_name, len); + p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); *p++ = cpu_to_be32(0); /* UID */ *p++ = cpu_to_be32(0); /* GID */ *p = cpu_to_be32(0); /* No more gids */ @@ -2012,11 +1999,11 @@ encode_layoutreturn(struct xdr_stream *xdr, p = reserve_space(xdr, 16); *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ *p++ = cpu_to_be32(args->layout_type); - *p++ = cpu_to_be32(IOMODE_ANY); + *p++ = cpu_to_be32(args->range.iomode); *p = cpu_to_be32(RETURN_FILE); p = reserve_space(xdr, 16); - p = xdr_encode_hyper(p, 0); - p = xdr_encode_hyper(p, NFS4_MAX_UINT64); + p = xdr_encode_hyper(p, args->range.offset); + p = xdr_encode_hyper(p, args->range.length); spin_lock(&args->inode->i_lock); encode_nfs4_stateid(xdr, &args->stateid); spin_unlock(&args->inode->i_lock); @@ -4936,20 +4923,13 @@ out_overflow: return -EIO; } -static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) +static int decode_rw_delegation(struct xdr_stream *xdr, + uint32_t delegation_type, + struct nfs_openres *res) { __be32 *p; - uint32_t delegation_type; int status; - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - delegation_type = be32_to_cpup(p); - if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { - res->delegation_type = 0; - return 0; - } status = decode_stateid(xdr, &res->delegation); if (unlikely(status)) return status; @@ -4973,6 +4953,52 @@ out_overflow: return -EIO; } +static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) +{ + __be32 *p; + uint32_t why_no_delegation; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + why_no_delegation = be32_to_cpup(p); + switch (why_no_delegation) { + case WND4_CONTENTION: + case WND4_RESOURCE: + xdr_inline_decode(xdr, 4); + /* Ignore for now */ + } + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) +{ + __be32 *p; + uint32_t delegation_type; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + delegation_type = be32_to_cpup(p); + res->delegation_type = 0; + switch (delegation_type) { + case NFS4_OPEN_DELEGATE_NONE: + return 0; + case NFS4_OPEN_DELEGATE_READ: + case NFS4_OPEN_DELEGATE_WRITE: + return decode_rw_delegation(xdr, delegation_type, res); + case NFS4_OPEN_DELEGATE_NONE_EXT: + return decode_no_delegation(xdr, res); + } + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) { __be32 *p; @@ -6567,6 +6593,7 @@ static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, int status; status = decode_compound_hdr(xdr, &hdr); + res->op_status = hdr.status; if (status) goto out; status = decode_sequence(xdr, &res->seq_res, rqstp); @@ -6592,6 +6619,7 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, int status; status = decode_compound_hdr(xdr, &hdr); + res->op_status = hdr.status; if (status) goto out; status = decode_sequence(xdr, &res->seq_res, rqstp); @@ -6621,6 +6649,7 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, int status; status = decode_compound_hdr(xdr, &hdr); + res->op_status = hdr.status; if (status) goto out; status = decode_sequence(xdr, &res->seq_res, rqstp); diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c index cd3c910..9bc9f04 100644 --- a/fs/nfs/nfsroot.c +++ b/fs/nfs/nfsroot.c @@ -261,11 +261,11 @@ static int __init root_nfs_data(char *cmdline) */ len = snprintf(nfs_export_path, sizeof(nfs_export_path), tmp, utsname()->nodename); - if (len > (int)sizeof(nfs_export_path)) + if (len >= (int)sizeof(nfs_export_path)) goto out_devnametoolong; len = snprintf(nfs_root_device, sizeof(nfs_root_device), "%pI4:%s", &servaddr, nfs_export_path); - if (len > (int)sizeof(nfs_root_device)) + if (len >= (int)sizeof(nfs_root_device)) goto out_devnametoolong; retval = 0; diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 9e5bc42..24e1d74 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -537,11 +537,12 @@ int objio_write_pagelist(struct nfs_pgio_header *hdr, int how) static size_t objio_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(pgio); unsigned int size; size = pnfs_generic_pg_test(pgio, prev, req); - if (!size || pgio->pg_count + req->wb_bytes > + if (!size || mirror->pg_count + req->wb_bytes > (unsigned long)pgio->pg_layout_private) return 0; @@ -607,12 +608,14 @@ static const struct nfs_pageio_ops objio_pg_read_ops = { .pg_init = objio_init_read, .pg_test = objio_pg_test, .pg_doio = pnfs_generic_pg_readpages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static const struct nfs_pageio_ops objio_pg_write_ops = { .pg_init = objio_init_write, .pg_test = objio_pg_test, .pg_doio = pnfs_generic_pg_writepages, + .pg_cleanup = pnfs_generic_pg_cleanup, }; static struct pnfs_layoutdriver_type objlayout_type = { diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 2b5e769..d57190a 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -42,21 +42,35 @@ static bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount) return p->pagevec != NULL; } +struct nfs_pgio_mirror * +nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc) +{ + return nfs_pgio_has_mirroring(desc) ? + &desc->pg_mirrors[desc->pg_mirror_idx] : + &desc->pg_mirrors[0]; +} +EXPORT_SYMBOL_GPL(nfs_pgio_current_mirror); + void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr, void (*release)(struct nfs_pgio_header *hdr)) { - hdr->req = nfs_list_entry(desc->pg_list.next); + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + + + hdr->req = nfs_list_entry(mirror->pg_list.next); hdr->inode = desc->pg_inode; hdr->cred = hdr->req->wb_context->cred; hdr->io_start = req_offset(hdr->req); - hdr->good_bytes = desc->pg_count; + hdr->good_bytes = mirror->pg_count; hdr->dreq = desc->pg_dreq; hdr->layout_private = desc->pg_layout_private; hdr->release = release; hdr->completion_ops = desc->pg_completion_ops; if (hdr->completion_ops->init_hdr) hdr->completion_ops->init_hdr(hdr); + + hdr->pgio_mirror_idx = desc->pg_mirror_idx; } EXPORT_SYMBOL_GPL(nfs_pgheader_init); @@ -480,7 +494,10 @@ nfs_wait_on_request(struct nfs_page *req) size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, struct nfs_page *prev, struct nfs_page *req) { - if (desc->pg_count > desc->pg_bsize) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + + + if (mirror->pg_count > mirror->pg_bsize) { /* should never happen */ WARN_ON_ONCE(1); return 0; @@ -490,11 +507,11 @@ size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, * Limit the request size so that we can still allocate a page array * for it without upsetting the slab allocator. */ - if (((desc->pg_count + req->wb_bytes) >> PAGE_SHIFT) * + if (((mirror->pg_count + req->wb_bytes) >> PAGE_SHIFT) * sizeof(struct page) > PAGE_SIZE) return 0; - return min(desc->pg_bsize - desc->pg_count, (size_t)req->wb_bytes); + return min(mirror->pg_bsize - mirror->pg_count, (size_t)req->wb_bytes); } EXPORT_SYMBOL_GPL(nfs_generic_pg_test); @@ -597,13 +614,14 @@ static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) } int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, + struct rpc_cred *cred, const struct nfs_rpc_ops *rpc_ops, const struct rpc_call_ops *call_ops, int how, int flags) { struct rpc_task *task; struct rpc_message msg = { .rpc_argp = &hdr->args, .rpc_resp = &hdr->res, - .rpc_cred = hdr->cred, + .rpc_cred = cred, }; struct rpc_task_setup task_setup_data = { .rpc_client = clnt, @@ -616,7 +634,7 @@ int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, }; int ret = 0; - hdr->rw_ops->rw_initiate(hdr, &msg, &task_setup_data, how); + hdr->rw_ops->rw_initiate(hdr, &msg, rpc_ops, &task_setup_data, how); dprintk("NFS: %5u initiated pgio call " "(req %s/%llu, %u bytes @ offset %llu)\n", @@ -650,10 +668,18 @@ EXPORT_SYMBOL_GPL(nfs_initiate_pgio); static int nfs_pgio_error(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { + struct nfs_pgio_mirror *mirror; + u32 midx; + set_bit(NFS_IOHDR_REDO, &hdr->flags); nfs_pgio_data_destroy(hdr); hdr->completion_ops->completion(hdr); - desc->pg_completion_ops->error_cleanup(&desc->pg_list); + /* TODO: Make sure it's right to clean up all mirrors here + * and not just hdr->pgio_mirror_idx */ + for (midx = 0; midx < desc->pg_mirror_count; midx++) { + mirror = &desc->pg_mirrors[midx]; + desc->pg_completion_ops->error_cleanup(&mirror->pg_list); + } return -ENOMEM; } @@ -670,6 +696,17 @@ static void nfs_pgio_release(void *calldata) hdr->completion_ops->completion(hdr); } +static void nfs_pageio_mirror_init(struct nfs_pgio_mirror *mirror, + unsigned int bsize) +{ + INIT_LIST_HEAD(&mirror->pg_list); + mirror->pg_bytes_written = 0; + mirror->pg_count = 0; + mirror->pg_bsize = bsize; + mirror->pg_base = 0; + mirror->pg_recoalesce = 0; +} + /** * nfs_pageio_init - initialise a page io descriptor * @desc: pointer to descriptor @@ -686,13 +723,10 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc, size_t bsize, int io_flags) { - INIT_LIST_HEAD(&desc->pg_list); - desc->pg_bytes_written = 0; - desc->pg_count = 0; - desc->pg_bsize = bsize; - desc->pg_base = 0; + struct nfs_pgio_mirror *new; + int i; + desc->pg_moreio = 0; - desc->pg_recoalesce = 0; desc->pg_inode = inode; desc->pg_ops = pg_ops; desc->pg_completion_ops = compl_ops; @@ -702,6 +736,26 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc, desc->pg_lseg = NULL; desc->pg_dreq = NULL; desc->pg_layout_private = NULL; + desc->pg_bsize = bsize; + + desc->pg_mirror_count = 1; + desc->pg_mirror_idx = 0; + + if (pg_ops->pg_get_mirror_count) { + /* until we have a request, we don't have an lseg and no + * idea how many mirrors there will be */ + new = kcalloc(NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX, + sizeof(struct nfs_pgio_mirror), GFP_KERNEL); + desc->pg_mirrors_dynamic = new; + desc->pg_mirrors = new; + + for (i = 0; i < NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX; i++) + nfs_pageio_mirror_init(&desc->pg_mirrors[i], bsize); + } else { + desc->pg_mirrors_dynamic = NULL; + desc->pg_mirrors = desc->pg_mirrors_static; + nfs_pageio_mirror_init(&desc->pg_mirrors[0], bsize); + } } EXPORT_SYMBOL_GPL(nfs_pageio_init); @@ -737,14 +791,16 @@ static void nfs_pgio_result(struct rpc_task *task, void *calldata) int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + struct nfs_page *req; struct page **pages, *last_page; - struct list_head *head = &desc->pg_list; + struct list_head *head = &mirror->pg_list; struct nfs_commit_info cinfo; unsigned int pagecount, pageused; - pagecount = nfs_page_array_len(desc->pg_base, desc->pg_count); + pagecount = nfs_page_array_len(mirror->pg_base, mirror->pg_count); if (!nfs_pgarray_set(&hdr->page_array, pagecount)) return nfs_pgio_error(desc, hdr); @@ -772,7 +828,7 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, desc->pg_ioflags &= ~FLUSH_COND_STABLE; /* Set up the argument struct */ - nfs_pgio_rpcsetup(hdr, desc->pg_count, 0, desc->pg_ioflags, &cinfo); + nfs_pgio_rpcsetup(hdr, mirror->pg_count, 0, desc->pg_ioflags, &cinfo); desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; } @@ -780,23 +836,74 @@ EXPORT_SYMBOL_GPL(nfs_generic_pgio); static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc) { + struct nfs_pgio_mirror *mirror; struct nfs_pgio_header *hdr; int ret; + mirror = nfs_pgio_current_mirror(desc); + hdr = nfs_pgio_header_alloc(desc->pg_rw_ops); if (!hdr) { - desc->pg_completion_ops->error_cleanup(&desc->pg_list); + /* TODO: make sure this is right with mirroring - or + * should it back out all mirrors? */ + desc->pg_completion_ops->error_cleanup(&mirror->pg_list); return -ENOMEM; } nfs_pgheader_init(desc, hdr, nfs_pgio_header_free); ret = nfs_generic_pgio(desc, hdr); if (ret == 0) ret = nfs_initiate_pgio(NFS_CLIENT(hdr->inode), - hdr, desc->pg_rpc_callops, + hdr, + hdr->cred, + NFS_PROTO(hdr->inode), + desc->pg_rpc_callops, desc->pg_ioflags, 0); return ret; } +/* + * nfs_pageio_setup_mirroring - determine if mirroring is to be used + * by calling the pg_get_mirror_count op + */ +static int nfs_pageio_setup_mirroring(struct nfs_pageio_descriptor *pgio, + struct nfs_page *req) +{ + int mirror_count = 1; + + if (!pgio->pg_ops->pg_get_mirror_count) + return 0; + + mirror_count = pgio->pg_ops->pg_get_mirror_count(pgio, req); + + if (!mirror_count || mirror_count > NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX) + return -EINVAL; + + if (WARN_ON_ONCE(!pgio->pg_mirrors_dynamic)) + return -EINVAL; + + pgio->pg_mirror_count = mirror_count; + + return 0; +} + +/* + * nfs_pageio_stop_mirroring - stop using mirroring (set mirror count to 1) + */ +void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio) +{ + pgio->pg_mirror_count = 1; + pgio->pg_mirror_idx = 0; +} + +static void nfs_pageio_cleanup_mirroring(struct nfs_pageio_descriptor *pgio) +{ + pgio->pg_mirror_count = 1; + pgio->pg_mirror_idx = 0; + pgio->pg_mirrors = pgio->pg_mirrors_static; + kfree(pgio->pg_mirrors_dynamic); + pgio->pg_mirrors_dynamic = NULL; +} + static bool nfs_match_open_context(const struct nfs_open_context *ctx1, const struct nfs_open_context *ctx2) { @@ -826,11 +933,15 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev, struct nfs_pageio_descriptor *pgio) { size_t size; + struct file_lock_context *flctx; if (prev) { if (!nfs_match_open_context(req->wb_context, prev->wb_context)) return false; - if (req->wb_context->dentry->d_inode->i_flock != NULL && + flctx = req->wb_context->dentry->d_inode->i_flctx; + if (flctx != NULL && + !(list_empty_careful(&flctx->flc_posix) && + list_empty_careful(&flctx->flc_flock)) && !nfs_match_lock_context(req->wb_lock_context, prev->wb_lock_context)) return false; @@ -863,19 +974,22 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev, static int nfs_pageio_do_add_request(struct nfs_pageio_descriptor *desc, struct nfs_page *req) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + struct nfs_page *prev = NULL; - if (desc->pg_count != 0) { - prev = nfs_list_entry(desc->pg_list.prev); + + if (mirror->pg_count != 0) { + prev = nfs_list_entry(mirror->pg_list.prev); } else { if (desc->pg_ops->pg_init) desc->pg_ops->pg_init(desc, req); - desc->pg_base = req->wb_pgbase; + mirror->pg_base = req->wb_pgbase; } if (!nfs_can_coalesce_requests(prev, req, desc)) return 0; nfs_list_remove_request(req); - nfs_list_add_request(req, &desc->pg_list); - desc->pg_count += req->wb_bytes; + nfs_list_add_request(req, &mirror->pg_list); + mirror->pg_count += req->wb_bytes; return 1; } @@ -884,16 +998,19 @@ static int nfs_pageio_do_add_request(struct nfs_pageio_descriptor *desc, */ static void nfs_pageio_doio(struct nfs_pageio_descriptor *desc) { - if (!list_empty(&desc->pg_list)) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + + + if (!list_empty(&mirror->pg_list)) { int error = desc->pg_ops->pg_doio(desc); if (error < 0) desc->pg_error = error; else - desc->pg_bytes_written += desc->pg_count; + mirror->pg_bytes_written += mirror->pg_count; } - if (list_empty(&desc->pg_list)) { - desc->pg_count = 0; - desc->pg_base = 0; + if (list_empty(&mirror->pg_list)) { + mirror->pg_count = 0; + mirror->pg_base = 0; } } @@ -911,6 +1028,8 @@ static void nfs_pageio_doio(struct nfs_pageio_descriptor *desc) static int __nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, struct nfs_page *req) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + struct nfs_page *subreq; unsigned int bytes_left = 0; unsigned int offset, pgbase; @@ -934,7 +1053,7 @@ static int __nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, nfs_pageio_doio(desc); if (desc->pg_error < 0) return 0; - if (desc->pg_recoalesce) + if (mirror->pg_recoalesce) return 0; /* retry add_request for this subreq */ nfs_page_group_lock(req, false); @@ -972,14 +1091,16 @@ err_ptr: static int nfs_do_recoalesce(struct nfs_pageio_descriptor *desc) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); LIST_HEAD(head); do { - list_splice_init(&desc->pg_list, &head); - desc->pg_bytes_written -= desc->pg_count; - desc->pg_count = 0; - desc->pg_base = 0; - desc->pg_recoalesce = 0; + list_splice_init(&mirror->pg_list, &head); + mirror->pg_bytes_written -= mirror->pg_count; + mirror->pg_count = 0; + mirror->pg_base = 0; + mirror->pg_recoalesce = 0; + desc->pg_moreio = 0; while (!list_empty(&head)) { @@ -993,11 +1114,11 @@ static int nfs_do_recoalesce(struct nfs_pageio_descriptor *desc) return 0; break; } - } while (desc->pg_recoalesce); + } while (mirror->pg_recoalesce); return 1; } -int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, +static int nfs_pageio_add_request_mirror(struct nfs_pageio_descriptor *desc, struct nfs_page *req) { int ret; @@ -1010,9 +1131,80 @@ int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, break; ret = nfs_do_recoalesce(desc); } while (ret); + return ret; } +int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, + struct nfs_page *req) +{ + u32 midx; + unsigned int pgbase, offset, bytes; + struct nfs_page *dupreq, *lastreq; + + pgbase = req->wb_pgbase; + offset = req->wb_offset; + bytes = req->wb_bytes; + + nfs_pageio_setup_mirroring(desc, req); + + for (midx = 0; midx < desc->pg_mirror_count; midx++) { + if (midx) { + nfs_page_group_lock(req, false); + + /* find the last request */ + for (lastreq = req->wb_head; + lastreq->wb_this_page != req->wb_head; + lastreq = lastreq->wb_this_page) + ; + + dupreq = nfs_create_request(req->wb_context, + req->wb_page, lastreq, pgbase, bytes); + + if (IS_ERR(dupreq)) { + nfs_page_group_unlock(req); + return 0; + } + + nfs_lock_request(dupreq); + nfs_page_group_unlock(req); + dupreq->wb_offset = offset; + dupreq->wb_index = req->wb_index; + } else + dupreq = req; + + if (nfs_pgio_has_mirroring(desc)) + desc->pg_mirror_idx = midx; + if (!nfs_pageio_add_request_mirror(desc, dupreq)) + return 0; + } + + return 1; +} + +/* + * nfs_pageio_complete_mirror - Complete I/O on the current mirror of an + * nfs_pageio_descriptor + * @desc: pointer to io descriptor + */ +static void nfs_pageio_complete_mirror(struct nfs_pageio_descriptor *desc, + u32 mirror_idx) +{ + struct nfs_pgio_mirror *mirror = &desc->pg_mirrors[mirror_idx]; + u32 restore_idx = desc->pg_mirror_idx; + + if (nfs_pgio_has_mirroring(desc)) + desc->pg_mirror_idx = mirror_idx; + for (;;) { + nfs_pageio_doio(desc); + if (!mirror->pg_recoalesce) + break; + if (!nfs_do_recoalesce(desc)) + break; + } + desc->pg_mirror_idx = restore_idx; +} + /* * nfs_pageio_resend - Transfer requests to new descriptor and resend * @hdr - the pgio header to move request from @@ -1046,18 +1238,19 @@ int nfs_pageio_resend(struct nfs_pageio_descriptor *desc, EXPORT_SYMBOL_GPL(nfs_pageio_resend); /** - * nfs_pageio_complete - Complete I/O on an nfs_pageio_descriptor + * nfs_pageio_complete - Complete I/O then cleanup an nfs_pageio_descriptor * @desc: pointer to io descriptor */ void nfs_pageio_complete(struct nfs_pageio_descriptor *desc) { - for (;;) { - nfs_pageio_doio(desc); - if (!desc->pg_recoalesce) - break; - if (!nfs_do_recoalesce(desc)) - break; - } + u32 midx; + + for (midx = 0; midx < desc->pg_mirror_count; midx++) + nfs_pageio_complete_mirror(desc, midx); + + if (desc->pg_ops->pg_cleanup) + desc->pg_ops->pg_cleanup(desc); + nfs_pageio_cleanup_mirroring(desc); } /** @@ -1073,10 +1266,17 @@ void nfs_pageio_complete(struct nfs_pageio_descriptor *desc) */ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index) { - if (!list_empty(&desc->pg_list)) { - struct nfs_page *prev = nfs_list_entry(desc->pg_list.prev); - if (index != prev->wb_index + 1) - nfs_pageio_complete(desc); + struct nfs_pgio_mirror *mirror; + struct nfs_page *prev; + u32 midx; + + for (midx = 0; midx < desc->pg_mirror_count; midx++) { + mirror = &desc->pg_mirrors[midx]; + if (!list_empty(&mirror->pg_list)) { + prev = nfs_list_entry(mirror->pg_list.prev); + if (index != prev->wb_index + 1) + nfs_pageio_complete_mirror(desc, midx); + } } } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 0a5dda4..4f802b0 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -34,6 +34,7 @@ #include "pnfs.h" #include "iostat.h" #include "nfs4trace.h" +#include "delegation.h" #define NFSDBG_FACILITY NFSDBG_PNFS #define PNFS_LAYOUTGET_RETRY_TIMEOUT (120*HZ) @@ -50,6 +51,10 @@ static DEFINE_SPINLOCK(pnfs_spinlock); */ static LIST_HEAD(pnfs_modules_tbl); +static int +pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid, + enum pnfs_iomode iomode, bool sync); + /* Return the registered pnfs layout driver module matching given id */ static struct pnfs_layoutdriver_type * find_pnfs_driver_locked(u32 id) @@ -238,6 +243,8 @@ pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo) struct inode *inode = lo->plh_inode; if (atomic_dec_and_lock(&lo->plh_refcount, &inode->i_lock)) { + if (!list_empty(&lo->plh_segs)) + WARN_ONCE(1, "NFS: BUG unfreed layout segments.\n"); pnfs_detach_layout_hdr(lo); spin_unlock(&inode->i_lock); pnfs_free_layout_hdr(lo); @@ -337,6 +344,48 @@ pnfs_layout_remove_lseg(struct pnfs_layout_hdr *lo, rpc_wake_up(&NFS_SERVER(inode)->roc_rpcwaitq); } +/* Return true if layoutreturn is needed */ +static bool +pnfs_layout_need_return(struct pnfs_layout_hdr *lo, + struct pnfs_layout_segment *lseg) +{ + struct pnfs_layout_segment *s; + + if (!test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags)) + return false; + + list_for_each_entry(s, &lo->plh_segs, pls_list) + if (s != lseg && test_bit(NFS_LSEG_LAYOUTRETURN, &s->pls_flags)) + return false; + + return true; +} + +static void pnfs_layoutreturn_before_put_lseg(struct pnfs_layout_segment *lseg, + struct pnfs_layout_hdr *lo, struct inode *inode) +{ + lo = lseg->pls_layout; + inode = lo->plh_inode; + + spin_lock(&inode->i_lock); + if (pnfs_layout_need_return(lo, lseg)) { + nfs4_stateid stateid; + enum pnfs_iomode iomode; + + stateid = lo->plh_stateid; + iomode = lo->plh_return_iomode; + /* decreased in pnfs_send_layoutreturn() */ + lo->plh_block_lgets++; + lo->plh_return_iomode = 0; + spin_unlock(&inode->i_lock); + pnfs_get_layout_hdr(lo); + + /* Send an async layoutreturn so we dont deadlock */ + pnfs_send_layoutreturn(lo, stateid, iomode, false); + } else + spin_unlock(&inode->i_lock); +} + void pnfs_put_lseg(struct pnfs_layout_segment *lseg) { @@ -349,8 +398,17 @@ pnfs_put_lseg(struct pnfs_layout_segment *lseg) dprintk("%s: lseg %p ref %d valid %d\n", __func__, lseg, atomic_read(&lseg->pls_refcount), test_bit(NFS_LSEG_VALID, &lseg->pls_flags)); + + /* Handle the case where refcount != 1 */ + if (atomic_add_unless(&lseg->pls_refcount, -1, 1)) + return; + lo = lseg->pls_layout; inode = lo->plh_inode; + /* Do we need a layoutreturn? */ + if (test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags)) + pnfs_layoutreturn_before_put_lseg(lseg, lo, inode); + if (atomic_dec_and_lock(&lseg->pls_refcount, &inode->i_lock)) { pnfs_get_layout_hdr(lo); pnfs_layout_remove_lseg(lo, lseg); @@ -543,6 +601,7 @@ pnfs_destroy_layout(struct nfs_inode *nfsi) pnfs_get_layout_hdr(lo); pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RO_FAILED); pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RW_FAILED); + pnfs_clear_retry_layoutget(lo); spin_unlock(&nfsi->vfs_inode.i_lock); pnfs_free_lseg_list(&tmp_list); pnfs_put_layout_hdr(lo); @@ -740,25 +799,37 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo, return !pnfs_seqid_is_newer(seqid, lo->plh_barrier); } +static bool +pnfs_layout_returning(const struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range) +{ + return test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) && + (lo->plh_return_iomode == IOMODE_ANY || + lo->plh_return_iomode == range->iomode); +} + /* lget is set to 1 if called from inside send_layoutget call chain */ static bool -pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo, int lget) +pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, int lget) { return lo->plh_block_lgets || test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || (list_empty(&lo->plh_segs) && - (atomic_read(&lo->plh_outstanding) > lget)); + (atomic_read(&lo->plh_outstanding) > lget)) || + pnfs_layout_returning(lo, range); } int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, struct nfs4_state *open_state) { int status = 0; dprintk("--> %s\n", __func__); spin_lock(&lo->plh_inode->i_lock); - if (pnfs_layoutgets_blocked(lo, 1)) { + if (pnfs_layoutgets_blocked(lo, range, 1)) { status = -EAGAIN; } else if (!nfs4_valid_open_stateid(open_state)) { status = -EBADF; @@ -825,7 +896,9 @@ send_layoutget(struct pnfs_layout_hdr *lo, pnfs_layout_io_set_failed(lo, range->iomode); } return NULL; - } + } else + pnfs_layout_clear_fail_bit(lo, + pnfs_iomode_to_fail_bit(range->iomode)); return lseg; } @@ -845,6 +918,49 @@ static void pnfs_clear_layoutcommit(struct inode *inode, } } +void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo) +{ + clear_bit_unlock(NFS_LAYOUT_RETURN, &lo->plh_flags); + smp_mb__after_atomic(); + wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN); +} + +static int +pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid, + enum pnfs_iomode iomode, bool sync) +{ + struct inode *ino = lo->plh_inode; + struct nfs4_layoutreturn *lrp; + int status = 0; + + lrp = kzalloc(sizeof(*lrp), GFP_NOFS); + if (unlikely(lrp == NULL)) { + status = -ENOMEM; + spin_lock(&ino->i_lock); + lo->plh_block_lgets--; + pnfs_clear_layoutreturn_waitbit(lo); + rpc_wake_up(&NFS_SERVER(ino)->roc_rpcwaitq); + spin_unlock(&ino->i_lock); + pnfs_put_layout_hdr(lo); + goto out; + } + + lrp->args.stateid = stateid; + lrp->args.layout_type = NFS_SERVER(ino)->pnfs_curr_ld->id; + lrp->args.inode = ino; + lrp->args.range.iomode = iomode; + lrp->args.range.offset = 0; + lrp->args.range.length = NFS4_MAX_UINT64; + lrp->args.layout = lo; + lrp->clp = NFS_SERVER(ino)->nfs_client; + lrp->cred = lo->plh_lc_cred; + + status = nfs4_proc_layoutreturn(lrp, sync); +out: + dprintk("<-- %s status: %d\n", __func__, status); + return status; +} + /* * Initiates a LAYOUTRETURN(FILE), and removes the pnfs_layout_hdr * when the layout segment list is empty. @@ -859,7 +975,6 @@ _pnfs_return_layout(struct inode *ino) struct pnfs_layout_hdr *lo = NULL; struct nfs_inode *nfsi = NFS_I(ino); LIST_HEAD(tmp_list); - struct nfs4_layoutreturn *lrp; nfs4_stateid stateid; int status = 0, empty; @@ -901,24 +1016,7 @@ _pnfs_return_layout(struct inode *ino) spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&tmp_list); - lrp = kzalloc(sizeof(*lrp), GFP_KERNEL); - if (unlikely(lrp == NULL)) { - status = -ENOMEM; - spin_lock(&ino->i_lock); - lo->plh_block_lgets--; - spin_unlock(&ino->i_lock); - pnfs_put_layout_hdr(lo); - goto out; - } - - lrp->args.stateid = stateid; - lrp->args.layout_type = NFS_SERVER(ino)->pnfs_curr_ld->id; - lrp->args.inode = ino; - lrp->args.layout = lo; - lrp->clp = NFS_SERVER(ino)->nfs_client; - lrp->cred = lo->plh_lc_cred; - - status = nfs4_proc_layoutreturn(lrp); + status = pnfs_send_layoutreturn(lo, stateid, IOMODE_ANY, true); out: dprintk("<-- %s status: %d\n", __func__, status); return status; @@ -954,31 +1052,60 @@ pnfs_commit_and_return_layout(struct inode *inode) bool pnfs_roc(struct inode *ino) { + struct nfs_inode *nfsi = NFS_I(ino); + struct nfs_open_context *ctx; + struct nfs4_state *state; struct pnfs_layout_hdr *lo; struct pnfs_layout_segment *lseg, *tmp; + nfs4_stateid stateid; LIST_HEAD(tmp_list); - bool found = false; + bool found = false, layoutreturn = false; spin_lock(&ino->i_lock); - lo = NFS_I(ino)->layout; + lo = nfsi->layout; if (!lo || !test_and_clear_bit(NFS_LAYOUT_ROC, &lo->plh_flags) || test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) - goto out_nolayout; + goto out_noroc; + + /* Don't return layout if we hold a delegation */ + if (nfs4_check_delegation(ino, FMODE_READ)) + goto out_noroc; + + list_for_each_entry(ctx, &nfsi->open_files, list) { + state = ctx->state; + /* Don't return layout if there is open file state */ + if (state != NULL && state->state != 0) + goto out_noroc; + } + + pnfs_clear_retry_layoutget(lo); list_for_each_entry_safe(lseg, tmp, &lo->plh_segs, pls_list) if (test_bit(NFS_LSEG_ROC, &lseg->pls_flags)) { mark_lseg_invalid(lseg, &tmp_list); found = true; } if (!found) - goto out_nolayout; + goto out_noroc; lo->plh_block_lgets++; pnfs_get_layout_hdr(lo); /* matched in pnfs_roc_release */ spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&tmp_list); return true; -out_nolayout: +out_noroc: + if (lo) { + stateid = lo->plh_stateid; + layoutreturn = + test_and_clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, + &lo->plh_flags); + if (layoutreturn) { + lo->plh_block_lgets++; + pnfs_get_layout_hdr(lo); + } + } spin_unlock(&ino->i_lock); + if (layoutreturn) + pnfs_send_layoutreturn(lo, stateid, IOMODE_ANY, true); return false; } @@ -1013,8 +1140,9 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task) struct nfs_inode *nfsi = NFS_I(ino); struct pnfs_layout_hdr *lo; struct pnfs_layout_segment *lseg; + nfs4_stateid stateid; u32 current_seqid; - bool found = false; + bool found = false, layoutreturn = false; spin_lock(&ino->i_lock); list_for_each_entry(lseg, &nfsi->layout->plh_segs, pls_list) @@ -1031,7 +1159,21 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task) */ *barrier = current_seqid + atomic_read(&lo->plh_outstanding); out: + if (!found) { + stateid = lo->plh_stateid; + layoutreturn = + test_and_clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, + &lo->plh_flags); + if (layoutreturn) { + lo->plh_block_lgets++; + pnfs_get_layout_hdr(lo); + } + } spin_unlock(&ino->i_lock); + if (layoutreturn) { + rpc_sleep_on(&NFS_SERVER(ino)->roc_rpcwaitq, task, NULL); + pnfs_send_layoutreturn(lo, stateid, IOMODE_ANY, false); + } return found; } @@ -1178,6 +1320,7 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo, list_for_each_entry(lseg, &lo->plh_segs, pls_list) { if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags) && + !test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags) && pnfs_lseg_range_match(&lseg->pls_range, range)) { ret = pnfs_get_lseg(lseg); break; @@ -1266,6 +1409,35 @@ static bool pnfs_within_mdsthreshold(struct nfs_open_context *ctx, return ret; } +/* stop waiting if someone clears NFS_LAYOUT_RETRY_LAYOUTGET bit. */ +static int pnfs_layoutget_retry_bit_wait(struct wait_bit_key *key) +{ + if (!test_bit(NFS_LAYOUT_RETRY_LAYOUTGET, key->flags)) + return 1; + return nfs_wait_bit_killable(key); +} + +static bool pnfs_prepare_to_retry_layoutget(struct pnfs_layout_hdr *lo) +{ + /* + * send layoutcommit as it can hold up layoutreturn due to lseg + * reference + */ + pnfs_layoutcommit_inode(lo->plh_inode, false); + return !wait_on_bit_action(&lo->plh_flags, NFS_LAYOUT_RETURN, + pnfs_layoutget_retry_bit_wait, + TASK_UNINTERRUPTIBLE); +} + +static void pnfs_clear_first_layoutget(struct pnfs_layout_hdr *lo) +{ + unsigned long *bitlock = &lo->plh_flags; + + clear_bit_unlock(NFS_LAYOUT_FIRST_LAYOUTGET, bitlock); + smp_mb__after_atomic(); + wake_up_bit(bitlock, NFS_LAYOUT_FIRST_LAYOUTGET); +} + /* * Layout segment is retreived from the server if not cached. * The appropriate layout segment is referenced and returned to the caller. @@ -1296,6 +1468,8 @@ pnfs_update_layout(struct inode *ino, if (pnfs_within_mdsthreshold(ctx, ino, iomode)) goto out; +lookup_again: + first = false; spin_lock(&ino->i_lock); lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags); if (lo == NULL) { @@ -1310,27 +1484,62 @@ pnfs_update_layout(struct inode *ino, } /* if LAYOUTGET already failed once we don't try again */ - if (pnfs_layout_io_test_failed(lo, iomode)) + if (pnfs_layout_io_test_failed(lo, iomode) && + !pnfs_should_retry_layoutget(lo)) goto out_unlock; - /* Check to see if the layout for the given range already exists */ - lseg = pnfs_find_lseg(lo, &arg); - if (lseg) - goto out_unlock; + first = list_empty(&lo->plh_segs); + if (first) { + /* The first layoutget for the file. Need to serialize per + * RFC 5661 Errata 3208. + */ + if (test_and_set_bit(NFS_LAYOUT_FIRST_LAYOUTGET, + &lo->plh_flags)) { + spin_unlock(&ino->i_lock); + wait_on_bit(&lo->plh_flags, NFS_LAYOUT_FIRST_LAYOUTGET, + TASK_UNINTERRUPTIBLE); + pnfs_put_layout_hdr(lo); + goto lookup_again; + } + } else { + /* Check to see if the layout for the given range + * already exists + */ + lseg = pnfs_find_lseg(lo, &arg); + if (lseg) + goto out_unlock; + } + + /* + * Because we free lsegs before sending LAYOUTRETURN, we need to wait + * for LAYOUTRETURN even if first is true. + */ + if (!lseg && pnfs_should_retry_layoutget(lo) && + test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) { + spin_unlock(&ino->i_lock); + dprintk("%s wait for layoutreturn\n", __func__); + if (pnfs_prepare_to_retry_layoutget(lo)) { + if (first) + pnfs_clear_first_layoutget(lo); + pnfs_put_layout_hdr(lo); + dprintk("%s retrying\n", __func__); + goto lookup_again; + } + goto out_put_layout_hdr; + } - if (pnfs_layoutgets_blocked(lo, 0)) + if (pnfs_layoutgets_blocked(lo, &arg, 0)) goto out_unlock; atomic_inc(&lo->plh_outstanding); - - first = list_empty(&lo->plh_layouts) ? true : false; spin_unlock(&ino->i_lock); - if (first) { + if (list_empty(&lo->plh_layouts)) { /* The lo must be on the clp list if there is any * chance of a CB_LAYOUTRECALL(FILE) coming in. */ spin_lock(&clp->cl_lock); - list_add_tail(&lo->plh_layouts, &server->layouts); + if (list_empty(&lo->plh_layouts)) + list_add_tail(&lo->plh_layouts, &server->layouts); spin_unlock(&clp->cl_lock); } @@ -1343,8 +1552,11 @@ pnfs_update_layout(struct inode *ino, arg.length = PAGE_CACHE_ALIGN(arg.length); lseg = send_layoutget(lo, ctx, &arg, gfp_flags); + pnfs_clear_retry_layoutget(lo); atomic_dec(&lo->plh_outstanding); out_put_layout_hdr: + if (first) + pnfs_clear_first_layoutget(lo); pnfs_put_layout_hdr(lo); out: dprintk("%s: inode %s/%llu pNFS layout segment %s for " @@ -1393,7 +1605,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) goto out_forget_reply; } - if (pnfs_layoutgets_blocked(lo, 1)) { + if (pnfs_layoutgets_blocked(lo, &lgp->args.range, 1)) { dprintk("%s forget reply due to state\n", __func__); goto out_forget_reply; } @@ -1440,24 +1652,79 @@ out_forget_reply: goto out; } +static void +pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, + struct list_head *tmp_list, + struct pnfs_layout_range *return_range) +{ + struct pnfs_layout_segment *lseg, *next; + + dprintk("%s:Begin lo %p\n", __func__, lo); + + if (list_empty(&lo->plh_segs)) + return; + + list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list) + if (should_free_lseg(&lseg->pls_range, return_range)) { + dprintk("%s: marking lseg %p iomode %d " + "offset %llu length %llu\n", __func__, + lseg, lseg->pls_range.iomode, + lseg->pls_range.offset, + lseg->pls_range.length); + set_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags); + mark_lseg_invalid(lseg, tmp_list); + } +} + +void pnfs_error_mark_layout_for_return(struct inode *inode, + struct pnfs_layout_segment *lseg) +{ + struct pnfs_layout_hdr *lo = NFS_I(inode)->layout; + int iomode = pnfs_iomode_to_fail_bit(lseg->pls_range.iomode); + struct pnfs_layout_range range = { + .iomode = lseg->pls_range.iomode, + .offset = 0, + .length = NFS4_MAX_UINT64, + }; + LIST_HEAD(free_me); + + spin_lock(&inode->i_lock); + /* set failure bit so that pnfs path will be retried later */ + pnfs_layout_set_fail_bit(lo, iomode); + set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags); + if (lo->plh_return_iomode == 0) + lo->plh_return_iomode = range.iomode; + else if (lo->plh_return_iomode != range.iomode) + lo->plh_return_iomode = IOMODE_ANY; + /* + * mark all matching lsegs so that we are sure to have no live + * segments at hand when sending layoutreturn. See pnfs_put_lseg() + * for how it works. + */ + pnfs_mark_matching_lsegs_return(lo, &free_me, &range); + spin_unlock(&inode->i_lock); + pnfs_free_lseg_list(&free_me); +} +EXPORT_SYMBOL_GPL(pnfs_error_mark_layout_for_return); + void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { u64 rd_size = req->wb_bytes; - WARN_ON_ONCE(pgio->pg_lseg != NULL); - - if (pgio->pg_dreq == NULL) - rd_size = i_size_read(pgio->pg_inode) - req_offset(req); - else - rd_size = nfs_dreq_bytes_left(pgio->pg_dreq); - - pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, - req->wb_context, - req_offset(req), - rd_size, - IOMODE_READ, - GFP_KERNEL); + if (pgio->pg_lseg == NULL) { + if (pgio->pg_dreq == NULL) + rd_size = i_size_read(pgio->pg_inode) - req_offset(req); + else + rd_size = nfs_dreq_bytes_left(pgio->pg_dreq); + + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + req_offset(req), + rd_size, + IOMODE_READ, + GFP_KERNEL); + } /* If no lseg, fall back to read through mds */ if (pgio->pg_lseg == NULL) nfs_pageio_reset_read_mds(pgio); @@ -1469,27 +1736,36 @@ void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req, u64 wb_size) { - WARN_ON_ONCE(pgio->pg_lseg != NULL); - - pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, - req->wb_context, - req_offset(req), - wb_size, - IOMODE_RW, - GFP_NOFS); + if (pgio->pg_lseg == NULL) + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + req_offset(req), + wb_size, + IOMODE_RW, + GFP_NOFS); /* If no lseg, fall back to write through mds */ if (pgio->pg_lseg == NULL) nfs_pageio_reset_write_mds(pgio); } EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_write); +void +pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *desc) +{ + if (desc->pg_lseg) { + pnfs_put_lseg(desc->pg_lseg); + desc->pg_lseg = NULL; + } +} +EXPORT_SYMBOL_GPL(pnfs_generic_pg_cleanup); + /* * Return 0 if @req cannot be coalesced into @pgio, otherwise return the number * of bytes (maximum @req->wb_bytes) that can be coalesced. */ size_t -pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, - struct nfs_page *req) +pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, + struct nfs_page *prev, struct nfs_page *req) { unsigned int size; u64 seg_end, req_start, seg_left; @@ -1513,10 +1789,16 @@ pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, seg_end = end_offset(pgio->pg_lseg->pls_range.offset, pgio->pg_lseg->pls_range.length); req_start = req_offset(req); - WARN_ON_ONCE(req_start > seg_end); + WARN_ON_ONCE(req_start >= seg_end); /* start of request is past the last byte of this segment */ - if (req_start >= seg_end) + if (req_start >= seg_end) { + /* reference the new lseg */ + if (pgio->pg_ops->pg_cleanup) + pgio->pg_ops->pg_cleanup(pgio); + if (pgio->pg_ops->pg_init) + pgio->pg_ops->pg_init(pgio, req); return 0; + } /* adjust 'size' iff there are fewer bytes left in the * segment than what nfs_generic_pg_test returned */ @@ -1571,10 +1853,12 @@ static void pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { - list_splice_tail_init(&hdr->pages, &desc->pg_list); + list_splice_tail_init(&hdr->pages, &mirror->pg_list); nfs_pageio_reset_write_mds(desc); - desc->pg_recoalesce = 1; + mirror->pg_recoalesce = 1; } nfs_pgio_data_destroy(hdr); } @@ -1608,11 +1892,9 @@ pnfs_do_write(struct nfs_pageio_descriptor *desc, struct pnfs_layout_segment *lseg = desc->pg_lseg; enum pnfs_try_status trypnfs; - desc->pg_lseg = NULL; trypnfs = pnfs_try_to_write_data(hdr, call_ops, lseg, how); if (trypnfs == PNFS_NOT_ATTEMPTED) pnfs_write_through_mds(desc, hdr); - pnfs_put_lseg(lseg); } static void pnfs_writehdr_free(struct nfs_pgio_header *hdr) @@ -1625,24 +1907,23 @@ EXPORT_SYMBOL_GPL(pnfs_writehdr_free); int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + struct nfs_pgio_header *hdr; int ret; hdr = nfs_pgio_header_alloc(desc->pg_rw_ops); if (!hdr) { - desc->pg_completion_ops->error_cleanup(&desc->pg_list); - pnfs_put_lseg(desc->pg_lseg); - desc->pg_lseg = NULL; + desc->pg_completion_ops->error_cleanup(&mirror->pg_list); return -ENOMEM; } nfs_pgheader_init(desc, hdr, pnfs_writehdr_free); + hdr->lseg = pnfs_get_lseg(desc->pg_lseg); ret = nfs_generic_pgio(desc, hdr); - if (ret != 0) { - pnfs_put_lseg(desc->pg_lseg); - desc->pg_lseg = NULL; - } else + if (!ret) pnfs_do_write(desc, hdr, desc->pg_ioflags); + return ret; } EXPORT_SYMBOL_GPL(pnfs_generic_pg_writepages); @@ -1687,10 +1968,12 @@ static void pnfs_read_through_mds(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { - list_splice_tail_init(&hdr->pages, &desc->pg_list); + list_splice_tail_init(&hdr->pages, &mirror->pg_list); nfs_pageio_reset_read_mds(desc); - desc->pg_recoalesce = 1; + mirror->pg_recoalesce = 1; } nfs_pgio_data_destroy(hdr); } @@ -1719,18 +2002,29 @@ pnfs_try_to_read_data(struct nfs_pgio_header *hdr, return trypnfs; } +/* Resend all requests through pnfs. */ +int pnfs_read_resend_pnfs(struct nfs_pgio_header *hdr) +{ + struct nfs_pageio_descriptor pgio; + + nfs_pageio_init_read(&pgio, hdr->inode, false, hdr->completion_ops); + return nfs_pageio_resend(&pgio, hdr); +} +EXPORT_SYMBOL_GPL(pnfs_read_resend_pnfs); + static void pnfs_do_read(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) { const struct rpc_call_ops *call_ops = desc->pg_rpc_callops; struct pnfs_layout_segment *lseg = desc->pg_lseg; enum pnfs_try_status trypnfs; + int err = 0; - desc->pg_lseg = NULL; trypnfs = pnfs_try_to_read_data(hdr, call_ops, lseg); - if (trypnfs == PNFS_NOT_ATTEMPTED) + if (trypnfs == PNFS_TRY_AGAIN) + err = pnfs_read_resend_pnfs(hdr); + if (trypnfs == PNFS_NOT_ATTEMPTED || err) pnfs_read_through_mds(desc, hdr); - pnfs_put_lseg(lseg); } static void pnfs_readhdr_free(struct nfs_pgio_header *hdr) @@ -1743,24 +2037,20 @@ EXPORT_SYMBOL_GPL(pnfs_readhdr_free); int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + struct nfs_pgio_header *hdr; int ret; hdr = nfs_pgio_header_alloc(desc->pg_rw_ops); if (!hdr) { - desc->pg_completion_ops->error_cleanup(&desc->pg_list); - ret = -ENOMEM; - pnfs_put_lseg(desc->pg_lseg); - desc->pg_lseg = NULL; - return ret; + desc->pg_completion_ops->error_cleanup(&mirror->pg_list); + return -ENOMEM; } nfs_pgheader_init(desc, hdr, pnfs_readhdr_free); hdr->lseg = pnfs_get_lseg(desc->pg_lseg); ret = nfs_generic_pgio(desc, hdr); - if (ret != 0) { - pnfs_put_lseg(desc->pg_lseg); - desc->pg_lseg = NULL; - } else + if (!ret) pnfs_do_read(desc, hdr); return ret; } @@ -1966,6 +2256,7 @@ clear_layoutcommitting: pnfs_clear_layoutcommitting(inode); goto out; } +EXPORT_SYMBOL_GPL(pnfs_layoutcommit_inode); struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) { diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 9ae5b76..797cd62 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -38,6 +38,25 @@ enum { NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ NFS_LSEG_ROC, /* roc bit received from server */ NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ + NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */ +}; + +/* Individual ip address */ +struct nfs4_pnfs_ds_addr { + struct sockaddr_storage da_addr; + size_t da_addrlen; + struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ + char *da_remotestr; /* human readable addr+port */ +}; + +struct nfs4_pnfs_ds { + struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */ + char *ds_remotestr; /* comma sep list of addrs */ + struct list_head ds_addrs; + struct nfs_client *ds_clp; + atomic_t ds_count; + unsigned long ds_state; +#define NFS4DS_CONNECTING 0 /* ds is establishing connection */ }; struct pnfs_layout_segment { @@ -53,19 +72,34 @@ struct pnfs_layout_segment { enum pnfs_try_status { PNFS_ATTEMPTED = 0, PNFS_NOT_ATTEMPTED = 1, + PNFS_TRY_AGAIN = 2, }; #ifdef CONFIG_NFS_V4_1 #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" +/* + * Default data server connection timeout and retrans vaules. + * Set by module parameters dataserver_timeo and dataserver_retrans. + */ +#define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ +#define NFS4_DEF_DS_RETRANS 5 + +/* error codes for internal use */ +#define NFS4ERR_RESET_TO_MDS 12001 +#define NFS4ERR_RESET_TO_PNFS 12002 + enum { NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ NFS_LAYOUT_ROC, /* some lseg had roc bit set */ NFS_LAYOUT_RETURN, /* Return this layout ASAP */ + NFS_LAYOUT_RETURN_BEFORE_CLOSE, /* Return this layout before close */ NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ + NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */ + NFS_LAYOUT_RETRY_LAYOUTGET, /* Retry layoutget */ }; enum layoutdriver_policy_flags { @@ -106,7 +140,8 @@ struct pnfs_layoutdriver_type { struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); void (*mark_request_commit) (struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo); + struct nfs_commit_info *cinfo, + u32 ds_commit_idx); void (*clear_request_commit) (struct nfs_page *req, struct nfs_commit_info *cinfo); int (*scan_commit_lists) (struct nfs_commit_info *cinfo, @@ -154,6 +189,7 @@ struct pnfs_layout_hdr { u32 plh_barrier; /* ignore lower seqids */ unsigned long plh_retry_timestamp; unsigned long plh_flags; + enum pnfs_iomode plh_return_iomode; loff_t plh_lwb; /* last write byte for layoutcommit */ struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ struct inode *plh_inode; @@ -185,7 +221,7 @@ extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *dev, struct rpc_cred *cred); extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags); -extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); +extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); /* pnfs.c */ void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); @@ -198,6 +234,7 @@ void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page * int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req, u64 wb_size); +void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req); @@ -217,6 +254,7 @@ void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, bool update_barrier); int pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range, struct nfs4_state *open_state); int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, struct list_head *tmp_list, @@ -233,17 +271,21 @@ int _pnfs_return_layout(struct inode *); int pnfs_commit_and_return_layout(struct inode *); void pnfs_ld_write_done(struct nfs_pgio_header *); void pnfs_ld_read_done(struct nfs_pgio_header *); +int pnfs_read_resend_pnfs(struct nfs_pgio_header *); struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx, loff_t pos, u64 count, enum pnfs_iomode iomode, gfp_t gfp_flags); +void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo); void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); +void pnfs_error_mark_layout_for_return(struct inode *inode, + struct pnfs_layout_segment *lseg); /* nfs4_deviceid_flags */ enum { @@ -275,6 +317,39 @@ void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); void nfs4_deviceid_purge_client(const struct nfs_client *); +/* pnfs_nfs.c */ +void pnfs_generic_clear_request_commit(struct nfs_page *req, + struct nfs_commit_info *cinfo); +void pnfs_generic_commit_release(void *calldata); +void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); +void pnfs_generic_rw_release(void *data); +void pnfs_generic_recover_commit_reqs(struct list_head *dst, + struct nfs_commit_info *cinfo); +int pnfs_generic_commit_pagelist(struct inode *inode, + struct list_head *mds_pages, + int how, + struct nfs_commit_info *cinfo, + int (*initiate_commit)(struct nfs_commit_data *data, + int how)); +int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); +void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); +void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); +struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, + gfp_t gfp_flags); +void nfs4_pnfs_v3_ds_connect_unload(void); +void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, + struct nfs4_deviceid_node *devid, unsigned int timeo, + unsigned int retrans, u32 version, u32 minor_version, + rpc_authflavor_t au_flavor); +struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, + struct xdr_stream *xdr, + gfp_t gfp_flags); + +static inline bool nfs_have_layout(struct inode *inode) +{ + return NFS_I(inode)->layout != NULL; +} + static inline struct nfs4_deviceid_node * nfs4_get_deviceid(struct nfs4_deviceid_node *d) { @@ -282,6 +357,26 @@ nfs4_get_deviceid(struct nfs4_deviceid_node *d) return d; } +static inline void pnfs_set_retry_layoutget(struct pnfs_layout_hdr *lo) +{ + if (!test_and_set_bit(NFS_LAYOUT_RETRY_LAYOUTGET, &lo->plh_flags)) + atomic_inc(&lo->plh_refcount); +} + +static inline void pnfs_clear_retry_layoutget(struct pnfs_layout_hdr *lo) +{ + if (test_and_clear_bit(NFS_LAYOUT_RETRY_LAYOUTGET, &lo->plh_flags)) { + atomic_dec(&lo->plh_refcount); + /* wake up waiters for LAYOUTRETURN as that is not needed */ + wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN); + } +} + +static inline bool pnfs_should_retry_layoutget(struct pnfs_layout_hdr *lo) +{ + return test_bit(NFS_LAYOUT_RETRY_LAYOUTGET, &lo->plh_flags); +} + static inline struct pnfs_layout_segment * pnfs_get_lseg(struct pnfs_layout_segment *lseg) { @@ -317,16 +412,22 @@ pnfs_get_ds_info(struct inode *inode) return ld->get_ds_info(inode); } +static inline void +pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) +{ + set_bit(NFS_DEVICEID_INVALID, &node->flags); +} + static inline bool pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) + struct nfs_commit_info *cinfo, u32 ds_commit_idx) { struct inode *inode = req->wb_context->dentry->d_inode; struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; if (lseg == NULL || ld->mark_request_commit == NULL) return false; - ld->mark_request_commit(req, lseg, cinfo); + ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx); return true; } @@ -352,15 +453,6 @@ pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); } -static inline void -pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, - struct nfs_commit_info *cinfo) -{ - if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) - return; - NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); -} - static inline struct nfs_page * pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, struct page *page) @@ -427,6 +519,11 @@ static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) #endif /* NFS_DEBUG */ #else /* CONFIG_NFS_V4_1 */ +static inline bool nfs_have_layout(struct inode *inode) +{ + return false; +} + static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) { } @@ -513,7 +610,7 @@ pnfs_get_ds_info(struct inode *inode) static inline bool pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) + struct nfs_commit_info *cinfo, u32 ds_commit_idx) { return false; } @@ -531,12 +628,6 @@ pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, return 0; } -static inline void -pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, - struct nfs_commit_info *cinfo) -{ -} - static inline struct nfs_page * pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, struct page *page) @@ -568,6 +659,10 @@ static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) return NULL; } +static inline void nfs4_pnfs_v3_ds_connect_unload(void) +{ +} + #endif /* CONFIG_NFS_V4_1 */ #endif /* FS_NFS_PNFS_H */ diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c new file mode 100644 index 0000000..fdc4f65 --- /dev/null +++ b/fs/nfs/pnfs_nfs.c @@ -0,0 +1,840 @@ +/* + * Common NFS I/O operations for the pnfs file based + * layout drivers. + * + * Copyright (c) 2014, Primary Data, Inc. All rights reserved. + * + * Tom Haynes <loghyr@primarydata.com> + */ + +#include <linux/nfs_fs.h> +#include <linux/nfs_page.h> +#include <linux/sunrpc/addr.h> +#include <linux/module.h> + +#include "nfs4session.h" +#include "internal.h" +#include "pnfs.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS + +void pnfs_generic_rw_release(void *data) +{ + struct nfs_pgio_header *hdr = data; + + nfs_put_client(hdr->ds_clp); + hdr->mds_ops->rpc_release(data); +} +EXPORT_SYMBOL_GPL(pnfs_generic_rw_release); + +/* Fake up some data that will cause nfs_commit_release to retry the writes. */ +void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data) +{ + struct nfs_page *first = nfs_list_entry(data->pages.next); + + data->task.tk_status = 0; + memcpy(&data->verf.verifier, &first->wb_verf, + sizeof(data->verf.verifier)); + data->verf.verifier.data[0]++; /* ensure verifier mismatch */ +} +EXPORT_SYMBOL_GPL(pnfs_generic_prepare_to_resend_writes); + +void pnfs_generic_write_commit_done(struct rpc_task *task, void *data) +{ + struct nfs_commit_data *wdata = data; + + /* Note this may cause RPC to be resent */ + wdata->mds_ops->rpc_call_done(task, data); +} +EXPORT_SYMBOL_GPL(pnfs_generic_write_commit_done); + +void pnfs_generic_commit_release(void *calldata) +{ + struct nfs_commit_data *data = calldata; + + data->completion_ops->completion(data); + pnfs_put_lseg(data->lseg); + nfs_put_client(data->ds_clp); + nfs_commitdata_release(data); +} +EXPORT_SYMBOL_GPL(pnfs_generic_commit_release); + +/* The generic layer is about to remove the req from the commit list. + * If this will make the bucket empty, it will need to put the lseg reference. + * Note this must be called holding the inode (/cinfo) lock + */ +void +pnfs_generic_clear_request_commit(struct nfs_page *req, + struct nfs_commit_info *cinfo) +{ + struct pnfs_layout_segment *freeme = NULL; + + if (!test_and_clear_bit(PG_COMMIT_TO_DS, &req->wb_flags)) + goto out; + cinfo->ds->nwritten--; + if (list_is_singular(&req->wb_list)) { + struct pnfs_commit_bucket *bucket; + + bucket = list_first_entry(&req->wb_list, + struct pnfs_commit_bucket, + written); + freeme = bucket->wlseg; + bucket->wlseg = NULL; + } +out: + nfs_request_remove_commit_list(req, cinfo); + pnfs_put_lseg_locked(freeme); +} +EXPORT_SYMBOL_GPL(pnfs_generic_clear_request_commit); + +static int +pnfs_generic_transfer_commit_list(struct list_head *src, struct list_head *dst, + struct nfs_commit_info *cinfo, int max) +{ + struct nfs_page *req, *tmp; + int ret = 0; + + list_for_each_entry_safe(req, tmp, src, wb_list) { + if (!nfs_lock_request(req)) + continue; + kref_get(&req->wb_kref); + if (cond_resched_lock(cinfo->lock)) + list_safe_reset_next(req, tmp, wb_list); + nfs_request_remove_commit_list(req, cinfo); + clear_bit(PG_COMMIT_TO_DS, &req->wb_flags); + nfs_list_add_request(req, dst); + ret++; + if ((ret == max) && !cinfo->dreq) + break; + } + return ret; +} + +static int +pnfs_generic_scan_ds_commit_list(struct pnfs_commit_bucket *bucket, + struct nfs_commit_info *cinfo, + int max) +{ + struct list_head *src = &bucket->written; + struct list_head *dst = &bucket->committing; + int ret; + + lockdep_assert_held(cinfo->lock); + ret = pnfs_generic_transfer_commit_list(src, dst, cinfo, max); + if (ret) { + cinfo->ds->nwritten -= ret; + cinfo->ds->ncommitting += ret; + bucket->clseg = bucket->wlseg; + if (list_empty(src)) + bucket->wlseg = NULL; + else + pnfs_get_lseg(bucket->clseg); + } + return ret; +} + +/* Move reqs from written to committing lists, returning count + * of number moved. + */ +int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, + int max) +{ + int i, rv = 0, cnt; + + lockdep_assert_held(cinfo->lock); + for (i = 0; i < cinfo->ds->nbuckets && max != 0; i++) { + cnt = pnfs_generic_scan_ds_commit_list(&cinfo->ds->buckets[i], + cinfo, max); + max -= cnt; + rv += cnt; + } + return rv; +} +EXPORT_SYMBOL_GPL(pnfs_generic_scan_commit_lists); + +/* Pull everything off the committing lists and dump into @dst. */ +void pnfs_generic_recover_commit_reqs(struct list_head *dst, + struct nfs_commit_info *cinfo) +{ + struct pnfs_commit_bucket *b; + struct pnfs_layout_segment *freeme; + int i; + + lockdep_assert_held(cinfo->lock); +restart: + for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { + if (pnfs_generic_transfer_commit_list(&b->written, dst, + cinfo, 0)) { + freeme = b->wlseg; + b->wlseg = NULL; + spin_unlock(cinfo->lock); + pnfs_put_lseg(freeme); + spin_lock(cinfo->lock); + goto restart; + } + } + cinfo->ds->nwritten = 0; +} +EXPORT_SYMBOL_GPL(pnfs_generic_recover_commit_reqs); + +static void pnfs_generic_retry_commit(struct nfs_commit_info *cinfo, int idx) +{ + struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; + struct pnfs_commit_bucket *bucket; + struct pnfs_layout_segment *freeme; + int i; + + for (i = idx; i < fl_cinfo->nbuckets; i++) { + bucket = &fl_cinfo->buckets[i]; + if (list_empty(&bucket->committing)) + continue; + nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo, i); + spin_lock(cinfo->lock); + freeme = bucket->clseg; + bucket->clseg = NULL; + spin_unlock(cinfo->lock); + pnfs_put_lseg(freeme); + } +} + +static unsigned int +pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo, + struct list_head *list) +{ + struct pnfs_ds_commit_info *fl_cinfo; + struct pnfs_commit_bucket *bucket; + struct nfs_commit_data *data; + int i; + unsigned int nreq = 0; + + fl_cinfo = cinfo->ds; + bucket = fl_cinfo->buckets; + for (i = 0; i < fl_cinfo->nbuckets; i++, bucket++) { + if (list_empty(&bucket->committing)) + continue; + data = nfs_commitdata_alloc(); + if (!data) + break; + data->ds_commit_index = i; + spin_lock(cinfo->lock); + data->lseg = bucket->clseg; + bucket->clseg = NULL; + spin_unlock(cinfo->lock); + list_add(&data->pages, list); + nreq++; + } + + /* Clean up on error */ + pnfs_generic_retry_commit(cinfo, i); + return nreq; +} + +/* This follows nfs_commit_list pretty closely */ +int +pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages, + int how, struct nfs_commit_info *cinfo, + int (*initiate_commit)(struct nfs_commit_data *data, + int how)) +{ + struct nfs_commit_data *data, *tmp; + LIST_HEAD(list); + unsigned int nreq = 0; + + if (!list_empty(mds_pages)) { + data = nfs_commitdata_alloc(); + if (data != NULL) { + data->lseg = NULL; + list_add(&data->pages, &list); + nreq++; + } else { + nfs_retry_commit(mds_pages, NULL, cinfo, 0); + pnfs_generic_retry_commit(cinfo, 0); + cinfo->completion_ops->error_cleanup(NFS_I(inode)); + return -ENOMEM; + } + } + + nreq += pnfs_generic_alloc_ds_commits(cinfo, &list); + + if (nreq == 0) { + cinfo->completion_ops->error_cleanup(NFS_I(inode)); + goto out; + } + + atomic_add(nreq, &cinfo->mds->rpcs_out); + + list_for_each_entry_safe(data, tmp, &list, pages) { + list_del_init(&data->pages); + if (!data->lseg) { + nfs_init_commit(data, mds_pages, NULL, cinfo); + nfs_initiate_commit(NFS_CLIENT(inode), data, + NFS_PROTO(data->inode), + data->mds_ops, how, 0); + } else { + struct pnfs_commit_bucket *buckets; + + buckets = cinfo->ds->buckets; + nfs_init_commit(data, + &buckets[data->ds_commit_index].committing, + data->lseg, + cinfo); + initiate_commit(data, how); + } + } +out: + cinfo->ds->ncommitting = 0; + return PNFS_ATTEMPTED; +} +EXPORT_SYMBOL_GPL(pnfs_generic_commit_pagelist); + +/* + * Data server cache + * + * Data servers can be mapped to different device ids. + * nfs4_pnfs_ds reference counting + * - set to 1 on allocation + * - incremented when a device id maps a data server already in the cache. + * - decremented when deviceid is removed from the cache. + */ +static DEFINE_SPINLOCK(nfs4_ds_cache_lock); +static LIST_HEAD(nfs4_data_server_cache); + +/* Debug routines */ +static void +print_ds(struct nfs4_pnfs_ds *ds) +{ + if (ds == NULL) { + printk(KERN_WARNING "%s NULL device\n", __func__); + return; + } + printk(KERN_WARNING " ds %s\n" + " ref count %d\n" + " client %p\n" + " cl_exchange_flags %x\n", + ds->ds_remotestr, + atomic_read(&ds->ds_count), ds->ds_clp, + ds->ds_clp ? ds->ds_clp->cl_exchange_flags : 0); +} + +static bool +same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) +{ + struct sockaddr_in *a, *b; + struct sockaddr_in6 *a6, *b6; + + if (addr1->sa_family != addr2->sa_family) + return false; + + switch (addr1->sa_family) { + case AF_INET: + a = (struct sockaddr_in *)addr1; + b = (struct sockaddr_in *)addr2; + + if (a->sin_addr.s_addr == b->sin_addr.s_addr && + a->sin_port == b->sin_port) + return true; + break; + + case AF_INET6: + a6 = (struct sockaddr_in6 *)addr1; + b6 = (struct sockaddr_in6 *)addr2; + + /* LINKLOCAL addresses must have matching scope_id */ + if (ipv6_addr_src_scope(&a6->sin6_addr) == + IPV6_ADDR_SCOPE_LINKLOCAL && + a6->sin6_scope_id != b6->sin6_scope_id) + return false; + + if (ipv6_addr_equal(&a6->sin6_addr, &b6->sin6_addr) && + a6->sin6_port == b6->sin6_port) + return true; + break; + + default: + dprintk("%s: unhandled address family: %u\n", + __func__, addr1->sa_family); + return false; + } + + return false; +} + +static bool +_same_data_server_addrs_locked(const struct list_head *dsaddrs1, + const struct list_head *dsaddrs2) +{ + struct nfs4_pnfs_ds_addr *da1, *da2; + + /* step through both lists, comparing as we go */ + for (da1 = list_first_entry(dsaddrs1, typeof(*da1), da_node), + da2 = list_first_entry(dsaddrs2, typeof(*da2), da_node); + da1 != NULL && da2 != NULL; + da1 = list_entry(da1->da_node.next, typeof(*da1), da_node), + da2 = list_entry(da2->da_node.next, typeof(*da2), da_node)) { + if (!same_sockaddr((struct sockaddr *)&da1->da_addr, + (struct sockaddr *)&da2->da_addr)) + return false; + } + if (da1 == NULL && da2 == NULL) + return true; + + return false; +} + +/* + * Lookup DS by addresses. nfs4_ds_cache_lock is held + */ +static struct nfs4_pnfs_ds * +_data_server_lookup_locked(const struct list_head *dsaddrs) +{ + struct nfs4_pnfs_ds *ds; + + list_for_each_entry(ds, &nfs4_data_server_cache, ds_node) + if (_same_data_server_addrs_locked(&ds->ds_addrs, dsaddrs)) + return ds; + return NULL; +} + +static void destroy_ds(struct nfs4_pnfs_ds *ds) +{ + struct nfs4_pnfs_ds_addr *da; + + dprintk("--> %s\n", __func__); + ifdebug(FACILITY) + print_ds(ds); + + nfs_put_client(ds->ds_clp); + + while (!list_empty(&ds->ds_addrs)) { + da = list_first_entry(&ds->ds_addrs, + struct nfs4_pnfs_ds_addr, + da_node); + list_del_init(&da->da_node); + kfree(da->da_remotestr); + kfree(da); + } + + kfree(ds->ds_remotestr); + kfree(ds); +} + +void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds) +{ + if (atomic_dec_and_lock(&ds->ds_count, + &nfs4_ds_cache_lock)) { + list_del_init(&ds->ds_node); + spin_unlock(&nfs4_ds_cache_lock); + destroy_ds(ds); + } +} +EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_put); + +/* + * Create a string with a human readable address and port to avoid + * complicated setup around many dprinks. + */ +static char * +nfs4_pnfs_remotestr(struct list_head *dsaddrs, gfp_t gfp_flags) +{ + struct nfs4_pnfs_ds_addr *da; + char *remotestr; + size_t len; + char *p; + + len = 3; /* '{', '}' and eol */ + list_for_each_entry(da, dsaddrs, da_node) { + len += strlen(da->da_remotestr) + 1; /* string plus comma */ + } + + remotestr = kzalloc(len, gfp_flags); + if (!remotestr) + return NULL; + + p = remotestr; + *(p++) = '{'; + len--; + list_for_each_entry(da, dsaddrs, da_node) { + size_t ll = strlen(da->da_remotestr); + + if (ll > len) + goto out_err; + + memcpy(p, da->da_remotestr, ll); + p += ll; + len -= ll; + + if (len < 1) + goto out_err; + (*p++) = ','; + len--; + } + if (len < 2) + goto out_err; + *(p++) = '}'; + *p = '\0'; + return remotestr; +out_err: + kfree(remotestr); + return NULL; +} + +/* + * Given a list of multipath struct nfs4_pnfs_ds_addr, add it to ds cache if + * uncached and return cached struct nfs4_pnfs_ds. + */ +struct nfs4_pnfs_ds * +nfs4_pnfs_ds_add(struct list_head *dsaddrs, gfp_t gfp_flags) +{ + struct nfs4_pnfs_ds *tmp_ds, *ds = NULL; + char *remotestr; + + if (list_empty(dsaddrs)) { + dprintk("%s: no addresses defined\n", __func__); + goto out; + } + + ds = kzalloc(sizeof(*ds), gfp_flags); + if (!ds) + goto out; + + /* this is only used for debugging, so it's ok if its NULL */ + remotestr = nfs4_pnfs_remotestr(dsaddrs, gfp_flags); + + spin_lock(&nfs4_ds_cache_lock); + tmp_ds = _data_server_lookup_locked(dsaddrs); + if (tmp_ds == NULL) { + INIT_LIST_HEAD(&ds->ds_addrs); + list_splice_init(dsaddrs, &ds->ds_addrs); + ds->ds_remotestr = remotestr; + atomic_set(&ds->ds_count, 1); + INIT_LIST_HEAD(&ds->ds_node); + ds->ds_clp = NULL; + list_add(&ds->ds_node, &nfs4_data_server_cache); + dprintk("%s add new data server %s\n", __func__, + ds->ds_remotestr); + } else { + kfree(remotestr); + kfree(ds); + atomic_inc(&tmp_ds->ds_count); + dprintk("%s data server %s found, inc'ed ds_count to %d\n", + __func__, tmp_ds->ds_remotestr, + atomic_read(&tmp_ds->ds_count)); + ds = tmp_ds; + } + spin_unlock(&nfs4_ds_cache_lock); +out: + return ds; +} +EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_add); + +static void nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds) +{ + might_sleep(); + wait_on_bit(&ds->ds_state, NFS4DS_CONNECTING, + TASK_KILLABLE); +} + +static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds) +{ + smp_mb__before_atomic(); + clear_bit(NFS4DS_CONNECTING, &ds->ds_state); + smp_mb__after_atomic(); + wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING); +} + +static struct nfs_client *(*get_v3_ds_connect)( + struct nfs_client *mds_clp, + const struct sockaddr *ds_addr, + int ds_addrlen, + int ds_proto, + unsigned int ds_timeo, + unsigned int ds_retrans, + rpc_authflavor_t au_flavor); + +static bool load_v3_ds_connect(void) +{ + if (!get_v3_ds_connect) { + get_v3_ds_connect = symbol_request(nfs3_set_ds_client); + WARN_ON_ONCE(!get_v3_ds_connect); + } + + return(get_v3_ds_connect != NULL); +} + +void __exit nfs4_pnfs_v3_ds_connect_unload(void) +{ + if (get_v3_ds_connect) { + symbol_put(nfs3_set_ds_client); + get_v3_ds_connect = NULL; + } +} +EXPORT_SYMBOL_GPL(nfs4_pnfs_v3_ds_connect_unload); + +static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv, + struct nfs4_pnfs_ds *ds, + unsigned int timeo, + unsigned int retrans, + rpc_authflavor_t au_flavor) +{ + struct nfs_client *clp = ERR_PTR(-EIO); + struct nfs4_pnfs_ds_addr *da; + int status = 0; + + dprintk("--> %s DS %s au_flavor %d\n", __func__, + ds->ds_remotestr, au_flavor); + + if (!load_v3_ds_connect()) + goto out; + + list_for_each_entry(da, &ds->ds_addrs, da_node) { + dprintk("%s: DS %s: trying address %s\n", + __func__, ds->ds_remotestr, da->da_remotestr); + + clp = get_v3_ds_connect(mds_srv->nfs_client, + (struct sockaddr *)&da->da_addr, + da->da_addrlen, IPPROTO_TCP, + timeo, retrans, au_flavor); + if (!IS_ERR(clp)) + break; + } + + if (IS_ERR(clp)) { + status = PTR_ERR(clp); + goto out; + } + + smp_wmb(); + ds->ds_clp = clp; + dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); +out: + return status; +} + +static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv, + struct nfs4_pnfs_ds *ds, + unsigned int timeo, + unsigned int retrans, + u32 minor_version, + rpc_authflavor_t au_flavor) +{ + struct nfs_client *clp = ERR_PTR(-EIO); + struct nfs4_pnfs_ds_addr *da; + int status = 0; + + dprintk("--> %s DS %s au_flavor %d\n", __func__, ds->ds_remotestr, + au_flavor); + + list_for_each_entry(da, &ds->ds_addrs, da_node) { + dprintk("%s: DS %s: trying address %s\n", + __func__, ds->ds_remotestr, da->da_remotestr); + + clp = nfs4_set_ds_client(mds_srv->nfs_client, + (struct sockaddr *)&da->da_addr, + da->da_addrlen, IPPROTO_TCP, + timeo, retrans, minor_version, + au_flavor); + if (!IS_ERR(clp)) + break; + } + + if (IS_ERR(clp)) { + status = PTR_ERR(clp); + goto out; + } + + status = nfs4_init_ds_session(clp, mds_srv->nfs_client->cl_lease_time); + if (status) + goto out_put; + + smp_wmb(); + ds->ds_clp = clp; + dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); +out: + return status; +out_put: + nfs_put_client(clp); + goto out; +} + +/* + * Create an rpc connection to the nfs4_pnfs_ds data server. + * Currently only supports IPv4 and IPv6 addresses. + * If connection fails, make devid unavailable. + */ +void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, + struct nfs4_deviceid_node *devid, unsigned int timeo, + unsigned int retrans, u32 version, + u32 minor_version, rpc_authflavor_t au_flavor) +{ + if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) { + int err = 0; + + if (version == 3) { + err = _nfs4_pnfs_v3_ds_connect(mds_srv, ds, timeo, + retrans, au_flavor); + } else if (version == 4) { + err = _nfs4_pnfs_v4_ds_connect(mds_srv, ds, timeo, + retrans, minor_version, + au_flavor); + } else { + dprintk("%s: unsupported DS version %d\n", __func__, + version); + err = -EPROTONOSUPPORT; + } + + if (err) + nfs4_mark_deviceid_unavailable(devid); + nfs4_clear_ds_conn_bit(ds); + } else { + nfs4_wait_ds_connect(ds); + } +} +EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_connect); + +/* + * Currently only supports ipv4, ipv6 and one multi-path address. + */ +struct nfs4_pnfs_ds_addr * +nfs4_decode_mp_ds_addr(struct net *net, struct xdr_stream *xdr, gfp_t gfp_flags) +{ + struct nfs4_pnfs_ds_addr *da = NULL; + char *buf, *portstr; + __be16 port; + int nlen, rlen; + int tmp[2]; + __be32 *p; + char *netid, *match_netid; + size_t len, match_netid_len; + char *startsep = ""; + char *endsep = ""; + + + /* r_netid */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_err; + nlen = be32_to_cpup(p++); + + p = xdr_inline_decode(xdr, nlen); + if (unlikely(!p)) + goto out_err; + + netid = kmalloc(nlen+1, gfp_flags); + if (unlikely(!netid)) + goto out_err; + + netid[nlen] = '\0'; + memcpy(netid, p, nlen); + + /* r_addr: ip/ip6addr with port in dec octets - see RFC 5665 */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_free_netid; + rlen = be32_to_cpup(p); + + p = xdr_inline_decode(xdr, rlen); + if (unlikely(!p)) + goto out_free_netid; + + /* port is ".ABC.DEF", 8 chars max */ + if (rlen > INET6_ADDRSTRLEN + IPV6_SCOPE_ID_LEN + 8) { + dprintk("%s: Invalid address, length %d\n", __func__, + rlen); + goto out_free_netid; + } + buf = kmalloc(rlen + 1, gfp_flags); + if (!buf) { + dprintk("%s: Not enough memory\n", __func__); + goto out_free_netid; + } + buf[rlen] = '\0'; + memcpy(buf, p, rlen); + + /* replace port '.' with '-' */ + portstr = strrchr(buf, '.'); + if (!portstr) { + dprintk("%s: Failed finding expected dot in port\n", + __func__); + goto out_free_buf; + } + *portstr = '-'; + + /* find '.' between address and port */ + portstr = strrchr(buf, '.'); + if (!portstr) { + dprintk("%s: Failed finding expected dot between address and " + "port\n", __func__); + goto out_free_buf; + } + *portstr = '\0'; + + da = kzalloc(sizeof(*da), gfp_flags); + if (unlikely(!da)) + goto out_free_buf; + + INIT_LIST_HEAD(&da->da_node); + + if (!rpc_pton(net, buf, portstr-buf, (struct sockaddr *)&da->da_addr, + sizeof(da->da_addr))) { + dprintk("%s: error parsing address %s\n", __func__, buf); + goto out_free_da; + } + + portstr++; + sscanf(portstr, "%d-%d", &tmp[0], &tmp[1]); + port = htons((tmp[0] << 8) | (tmp[1])); + + switch (da->da_addr.ss_family) { + case AF_INET: + ((struct sockaddr_in *)&da->da_addr)->sin_port = port; + da->da_addrlen = sizeof(struct sockaddr_in); + match_netid = "tcp"; + match_netid_len = 3; + break; + + case AF_INET6: + ((struct sockaddr_in6 *)&da->da_addr)->sin6_port = port; + da->da_addrlen = sizeof(struct sockaddr_in6); + match_netid = "tcp6"; + match_netid_len = 4; + startsep = "["; + endsep = "]"; + break; + + default: + dprintk("%s: unsupported address family: %u\n", + __func__, da->da_addr.ss_family); + goto out_free_da; + } + + if (nlen != match_netid_len || strncmp(netid, match_netid, nlen)) { + dprintk("%s: ERROR: r_netid \"%s\" != \"%s\"\n", + __func__, netid, match_netid); + goto out_free_da; + } + + /* save human readable address */ + len = strlen(startsep) + strlen(buf) + strlen(endsep) + 7; + da->da_remotestr = kzalloc(len, gfp_flags); + + /* NULL is ok, only used for dprintk */ + if (da->da_remotestr) + snprintf(da->da_remotestr, len, "%s%s%s:%u", startsep, + buf, endsep, ntohs(port)); + + dprintk("%s: Parsed DS addr %s\n", __func__, da->da_remotestr); + kfree(buf); + kfree(netid); + return da; + +out_free_da: + kfree(da); +out_free_buf: + dprintk("%s: Error parsing DS addr: %s\n", __func__, buf); + kfree(buf); +out_free_netid: + kfree(netid); +out_err: + return NULL; +} +EXPORT_SYMBOL_GPL(nfs4_decode_mp_ds_addr); diff --git a/fs/nfs/read.c b/fs/nfs/read.c index c91a479..568ecf0 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -70,8 +70,15 @@ EXPORT_SYMBOL_GPL(nfs_pageio_init_read); void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio) { + struct nfs_pgio_mirror *mirror; + pgio->pg_ops = &nfs_pgio_rw_ops; - pgio->pg_bsize = NFS_SERVER(pgio->pg_inode)->rsize; + + /* read path should never have more than one mirror */ + WARN_ON_ONCE(pgio->pg_mirror_count != 1); + + mirror = &pgio->pg_mirrors[0]; + mirror->pg_bsize = NFS_SERVER(pgio->pg_inode)->rsize; } EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds); @@ -81,6 +88,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, struct nfs_page *new; unsigned int len; struct nfs_pageio_descriptor pgio; + struct nfs_pgio_mirror *pgm; len = nfs_page_length(page); if (len == 0) @@ -97,7 +105,13 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, &nfs_async_read_completion_ops); nfs_pageio_add_request(&pgio, new); nfs_pageio_complete(&pgio); - NFS_I(inode)->read_io += pgio.pg_bytes_written; + + /* It doesn't make sense to do mirrored reads! */ + WARN_ON_ONCE(pgio.pg_mirror_count != 1); + + pgm = &pgio.pg_mirrors[0]; + NFS_I(inode)->read_io += pgm->pg_bytes_written; + return 0; } @@ -168,13 +182,14 @@ out: static void nfs_initiate_read(struct nfs_pgio_header *hdr, struct rpc_message *msg, + const struct nfs_rpc_ops *rpc_ops, struct rpc_task_setup *task_setup_data, int how) { struct inode *inode = hdr->inode; int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0; task_setup_data->flags |= swap_flags; - NFS_PROTO(inode)->read_setup(hdr, msg); + rpc_ops->read_setup(hdr, msg); } static void @@ -351,6 +366,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, struct list_head *pages, unsigned nr_pages) { struct nfs_pageio_descriptor pgio; + struct nfs_pgio_mirror *pgm; struct nfs_readdesc desc = { .pgio = &pgio, }; @@ -386,10 +402,15 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, &nfs_async_read_completion_ops); ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc); - nfs_pageio_complete(&pgio); - NFS_I(inode)->read_io += pgio.pg_bytes_written; - npages = (pgio.pg_bytes_written + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; + + /* It doesn't make sense to do mirrored reads! */ + WARN_ON_ONCE(pgio.pg_mirror_count != 1); + + pgm = &pgio.pg_mirrors[0]; + NFS_I(inode)->read_io += pgm->pg_bytes_written; + npages = (pgm->pg_bytes_written + PAGE_CACHE_SIZE - 1) >> + PAGE_CACHE_SHIFT; nfs_add_stats(inode, NFSIOS_READPAGES, npages); read_complete: put_nfs_open_context(desc.ctx); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 6ec4fe2..322b2de02 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -404,12 +404,15 @@ void __exit unregister_nfs_fs(void) unregister_filesystem(&nfs_fs_type); } -void nfs_sb_active(struct super_block *sb) +bool nfs_sb_active(struct super_block *sb) { struct nfs_server *server = NFS_SB(sb); - if (atomic_inc_return(&server->active) == 1) - atomic_inc(&sb->s_active); + if (!atomic_inc_not_zero(&sb->s_active)) + return false; + if (atomic_inc_return(&server->active) != 1) + atomic_dec(&sb->s_active); + return true; } EXPORT_SYMBOL_GPL(nfs_sb_active); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 298abcc..88a6d21 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -473,13 +473,18 @@ try_again: do { /* * Subrequests are always contiguous, non overlapping - * and in order. If not, it's a programming error. + * and in order - but may be repeated (mirrored writes). */ - WARN_ON_ONCE(subreq->wb_offset != - (head->wb_offset + total_bytes)); - - /* keep track of how many bytes this group covers */ - total_bytes += subreq->wb_bytes; + if (subreq->wb_offset == (head->wb_offset + total_bytes)) { + /* keep track of how many bytes this group covers */ + total_bytes += subreq->wb_bytes; + } else if (WARN_ON_ONCE(subreq->wb_offset < head->wb_offset || + ((subreq->wb_offset + subreq->wb_bytes) > + (head->wb_offset + total_bytes)))) { + nfs_page_group_unlock(head); + spin_unlock(&inode->i_lock); + return ERR_PTR(-EIO); + } if (!nfs_lock_request(subreq)) { /* releases page group bit lock and @@ -842,9 +847,9 @@ EXPORT_SYMBOL_GPL(nfs_init_cinfo); */ void nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) + struct nfs_commit_info *cinfo, u32 ds_commit_idx) { - if (pnfs_mark_request_commit(req, lseg, cinfo)) + if (pnfs_mark_request_commit(req, lseg, cinfo, ds_commit_idx)) return; nfs_request_add_commit_list(req, &cinfo->mds->list, cinfo); } @@ -900,7 +905,8 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr) } if (nfs_write_need_commit(hdr)) { memcpy(&req->wb_verf, &hdr->verf.verifier, sizeof(req->wb_verf)); - nfs_mark_request_commit(req, hdr->lseg, &cinfo); + nfs_mark_request_commit(req, hdr->lseg, &cinfo, + hdr->pgio_mirror_idx); goto next; } remove_req: @@ -1091,6 +1097,7 @@ int nfs_flush_incompatible(struct file *file, struct page *page) { struct nfs_open_context *ctx = nfs_file_open_context(file); struct nfs_lock_context *l_ctx; + struct file_lock_context *flctx = file_inode(file)->i_flctx; struct nfs_page *req; int do_flush, status; /* @@ -1109,7 +1116,9 @@ int nfs_flush_incompatible(struct file *file, struct page *page) do_flush = req->wb_page != page || req->wb_context != ctx; /* for now, flush if more than 1 request in page_group */ do_flush |= req->wb_this_page != req; - if (l_ctx && ctx->dentry->d_inode->i_flock != NULL) { + if (l_ctx && flctx && + !(list_empty_careful(&flctx->flc_posix) && + list_empty_careful(&flctx->flc_flock))) { do_flush |= l_ctx->lockowner.l_owner != current->files || l_ctx->lockowner.l_pid != current->tgid; } @@ -1170,6 +1179,13 @@ out: return PageUptodate(page) != 0; } +static bool +is_whole_file_wrlock(struct file_lock *fl) +{ + return fl->fl_start == 0 && fl->fl_end == OFFSET_MAX && + fl->fl_type == F_WRLCK; +} + /* If we know the page is up to date, and we're not using byte range locks (or * if we have the whole file locked for writing), it may be more efficient to * extend the write to cover the entire page in order to avoid fragmentation @@ -1180,17 +1196,36 @@ out: */ static int nfs_can_extend_write(struct file *file, struct page *page, struct inode *inode) { + int ret; + struct file_lock_context *flctx = inode->i_flctx; + struct file_lock *fl; + if (file->f_flags & O_DSYNC) return 0; if (!nfs_write_pageuptodate(page, inode)) return 0; if (NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE)) return 1; - if (inode->i_flock == NULL || (inode->i_flock->fl_start == 0 && - inode->i_flock->fl_end == OFFSET_MAX && - inode->i_flock->fl_type != F_RDLCK)) - return 1; - return 0; + if (!flctx || (list_empty_careful(&flctx->flc_flock) && + list_empty_careful(&flctx->flc_posix))) + return 0; + + /* Check to see if there are whole file write locks */ + ret = 0; + spin_lock(&flctx->flc_lock); + if (!list_empty(&flctx->flc_posix)) { + fl = list_first_entry(&flctx->flc_posix, struct file_lock, + fl_list); + if (is_whole_file_wrlock(fl)) + ret = 1; + } else if (!list_empty(&flctx->flc_flock)) { + fl = list_first_entry(&flctx->flc_flock, struct file_lock, + fl_list); + if (fl->fl_type == F_WRLCK) + ret = 1; + } + spin_unlock(&flctx->flc_lock); + return ret; } /* @@ -1240,15 +1275,15 @@ static int flush_task_priority(int how) static void nfs_initiate_write(struct nfs_pgio_header *hdr, struct rpc_message *msg, + const struct nfs_rpc_ops *rpc_ops, struct rpc_task_setup *task_setup_data, int how) { - struct inode *inode = hdr->inode; int priority = flush_task_priority(how); task_setup_data->priority = priority; - NFS_PROTO(inode)->write_setup(hdr, msg); + rpc_ops->write_setup(hdr, msg); - nfs4_state_protect_write(NFS_SERVER(inode)->nfs_client, + nfs4_state_protect_write(NFS_SERVER(hdr->inode)->nfs_client, &task_setup_data->rpc_client, msg, hdr); } @@ -1298,8 +1333,14 @@ EXPORT_SYMBOL_GPL(nfs_pageio_init_write); void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio) { + struct nfs_pgio_mirror *mirror; + pgio->pg_ops = &nfs_pgio_rw_ops; - pgio->pg_bsize = NFS_SERVER(pgio->pg_inode)->wsize; + + nfs_pageio_stop_mirroring(pgio); + + mirror = &pgio->pg_mirrors[0]; + mirror->pg_bsize = NFS_SERVER(pgio->pg_inode)->wsize; } EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds); @@ -1465,6 +1506,7 @@ void nfs_commitdata_release(struct nfs_commit_data *data) EXPORT_SYMBOL_GPL(nfs_commitdata_release); int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, + const struct nfs_rpc_ops *nfs_ops, const struct rpc_call_ops *call_ops, int how, int flags) { @@ -1486,7 +1528,7 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, .priority = priority, }; /* Set up the initial task struct. */ - NFS_PROTO(data->inode)->commit_setup(data, &msg); + nfs_ops->commit_setup(data, &msg); dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid); @@ -1554,14 +1596,15 @@ EXPORT_SYMBOL_GPL(nfs_init_commit); void nfs_retry_commit(struct list_head *page_list, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) + struct nfs_commit_info *cinfo, + u32 ds_commit_idx) { struct nfs_page *req; while (!list_empty(page_list)) { req = nfs_list_entry(page_list->next); nfs_list_remove_request(req); - nfs_mark_request_commit(req, lseg, cinfo); + nfs_mark_request_commit(req, lseg, cinfo, ds_commit_idx); if (!cinfo->dreq) { dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); dec_bdi_stat(inode_to_bdi(page_file_mapping(req->wb_page)->host), @@ -1589,10 +1632,10 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how, /* Set up the argument struct */ nfs_init_commit(data, head, NULL, cinfo); atomic_inc(&cinfo->mds->rpcs_out); - return nfs_initiate_commit(NFS_CLIENT(inode), data, data->mds_ops, - how, 0); + return nfs_initiate_commit(NFS_CLIENT(inode), data, NFS_PROTO(inode), + data->mds_ops, how, 0); out_bad: - nfs_retry_commit(head, NULL, cinfo); + nfs_retry_commit(head, NULL, cinfo, 0); cinfo->completion_ops->error_cleanup(NFS_I(inode)); return -ENOMEM; } diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index 7339515..683bf71 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -82,6 +82,16 @@ config NFSD_V4 If unsure, say N. +config NFSD_PNFS + bool "NFSv4.1 server support for Parallel NFS (pNFS)" + depends on NFSD_V4 + help + This option enables support for the parallel NFS features of the + minor version 1 of the NFSv4 protocol (RFC5661) in the kernel's NFS + server. + + If unsure, say N. + config NFSD_V4_SECURITY_LABEL bool "Provide Security Label support for NFSv4 server" depends on NFSD_V4 && SECURITY diff --git a/fs/nfsd/Makefile b/fs/nfsd/Makefile index af32ef0..9a6028e 100644 --- a/fs/nfsd/Makefile +++ b/fs/nfsd/Makefile @@ -2,9 +2,14 @@ # Makefile for the Linux nfs server # +ccflags-y += -I$(src) # needed for trace events + obj-$(CONFIG_NFSD) += nfsd.o -nfsd-y := nfssvc.o nfsctl.o nfsproc.o nfsfh.o vfs.o \ +# this one should be compiled first, as the tracing macros can easily blow up +nfsd-y += trace.o + +nfsd-y += nfssvc.o nfsctl.o nfsproc.o nfsfh.o vfs.o \ export.o auth.o lockd.o nfscache.o nfsxdr.o stats.o nfsd-$(CONFIG_NFSD_FAULT_INJECTION) += fault_inject.o nfsd-$(CONFIG_NFSD_V2_ACL) += nfs2acl.o @@ -12,3 +17,4 @@ nfsd-$(CONFIG_NFSD_V3) += nfs3proc.o nfs3xdr.o nfsd-$(CONFIG_NFSD_V3_ACL) += nfs3acl.o nfsd-$(CONFIG_NFSD_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4idmap.o \ nfs4acl.o nfs4callback.o nfs4recover.o +nfsd-$(CONFIG_NFSD_PNFS) += nfs4layouts.o blocklayout.o blocklayoutxdr.o diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c new file mode 100644 index 0000000..cdbc78c --- /dev/null +++ b/fs/nfsd/blocklayout.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ +#include <linux/exportfs.h> +#include <linux/genhd.h> +#include <linux/slab.h> + +#include <linux/nfsd/debug.h> + +#include "blocklayoutxdr.h" +#include "pnfs.h" + +#define NFSDDBG_FACILITY NFSDDBG_PNFS + + +static int +nfsd4_block_get_device_info_simple(struct super_block *sb, + struct nfsd4_getdeviceinfo *gdp) +{ + struct pnfs_block_deviceaddr *dev; + struct pnfs_block_volume *b; + + dev = kzalloc(sizeof(struct pnfs_block_deviceaddr) + + sizeof(struct pnfs_block_volume), GFP_KERNEL); + if (!dev) + return -ENOMEM; + gdp->gd_device = dev; + + dev->nr_volumes = 1; + b = &dev->volumes[0]; + + b->type = PNFS_BLOCK_VOLUME_SIMPLE; + b->simple.sig_len = PNFS_BLOCK_UUID_LEN; + return sb->s_export_op->get_uuid(sb, b->simple.sig, &b->simple.sig_len, + &b->simple.offset); +} + +static __be32 +nfsd4_block_proc_getdeviceinfo(struct super_block *sb, + struct nfsd4_getdeviceinfo *gdp) +{ + if (sb->s_bdev != sb->s_bdev->bd_contains) + return nfserr_inval; + return nfserrno(nfsd4_block_get_device_info_simple(sb, gdp)); +} + +static __be32 +nfsd4_block_proc_layoutget(struct inode *inode, const struct svc_fh *fhp, + struct nfsd4_layoutget *args) +{ + struct nfsd4_layout_seg *seg = &args->lg_seg; + struct super_block *sb = inode->i_sb; + u32 block_size = (1 << inode->i_blkbits); + struct pnfs_block_extent *bex; + struct iomap iomap; + u32 device_generation = 0; + int error; + + /* + * We do not attempt to support I/O smaller than the fs block size, + * or not aligned to it. + */ + if (args->lg_minlength < block_size) { + dprintk("pnfsd: I/O too small\n"); + goto out_layoutunavailable; + } + if (seg->offset & (block_size - 1)) { + dprintk("pnfsd: I/O misaligned\n"); + goto out_layoutunavailable; + } + + /* + * Some clients barf on non-zero block numbers for NONE or INVALID + * layouts, so make sure to zero the whole structure. + */ + error = -ENOMEM; + bex = kzalloc(sizeof(*bex), GFP_KERNEL); + if (!bex) + goto out_error; + args->lg_content = bex; + + error = sb->s_export_op->map_blocks(inode, seg->offset, seg->length, + &iomap, seg->iomode != IOMODE_READ, + &device_generation); + if (error) { + if (error == -ENXIO) + goto out_layoutunavailable; + goto out_error; + } + + if (iomap.length < args->lg_minlength) { + dprintk("pnfsd: extent smaller than minlength\n"); + goto out_layoutunavailable; + } + + switch (iomap.type) { + case IOMAP_MAPPED: + if (seg->iomode == IOMODE_READ) + bex->es = PNFS_BLOCK_READ_DATA; + else + bex->es = PNFS_BLOCK_READWRITE_DATA; + bex->soff = (iomap.blkno << 9); + break; + case IOMAP_UNWRITTEN: + if (seg->iomode & IOMODE_RW) { + /* + * Crack monkey special case from section 2.3.1. + */ + if (args->lg_minlength == 0) { + dprintk("pnfsd: no soup for you!\n"); + goto out_layoutunavailable; + } + + bex->es = PNFS_BLOCK_INVALID_DATA; + bex->soff = (iomap.blkno << 9); + break; + } + /*FALLTHRU*/ + case IOMAP_HOLE: + if (seg->iomode == IOMODE_READ) { + bex->es = PNFS_BLOCK_NONE_DATA; + break; + } + /*FALLTHRU*/ + case IOMAP_DELALLOC: + default: + WARN(1, "pnfsd: filesystem returned %d extent\n", iomap.type); + goto out_layoutunavailable; + } + + error = nfsd4_set_deviceid(&bex->vol_id, fhp, device_generation); + if (error) + goto out_error; + bex->foff = iomap.offset; + bex->len = iomap.length; + + seg->offset = iomap.offset; + seg->length = iomap.length; + + dprintk("GET: %lld:%lld %d\n", bex->foff, bex->len, bex->es); + return 0; + +out_error: + seg->length = 0; + return nfserrno(error); +out_layoutunavailable: + seg->length = 0; + return nfserr_layoutunavailable; +} + +static __be32 +nfsd4_block_proc_layoutcommit(struct inode *inode, + struct nfsd4_layoutcommit *lcp) +{ + loff_t new_size = lcp->lc_last_wr + 1; + struct iattr iattr = { .ia_valid = 0 }; + struct iomap *iomaps; + int nr_iomaps; + int error; + + nr_iomaps = nfsd4_block_decode_layoutupdate(lcp->lc_up_layout, + lcp->lc_up_len, &iomaps, 1 << inode->i_blkbits); + if (nr_iomaps < 0) + return nfserrno(nr_iomaps); + + if (lcp->lc_mtime.tv_nsec == UTIME_NOW || + timespec_compare(&lcp->lc_mtime, &inode->i_mtime) < 0) + lcp->lc_mtime = current_fs_time(inode->i_sb); + iattr.ia_valid |= ATTR_ATIME | ATTR_CTIME | ATTR_MTIME; + iattr.ia_atime = iattr.ia_ctime = iattr.ia_mtime = lcp->lc_mtime; + + if (new_size > i_size_read(inode)) { + iattr.ia_valid |= ATTR_SIZE; + iattr.ia_size = new_size; + } + + error = inode->i_sb->s_export_op->commit_blocks(inode, iomaps, + nr_iomaps, &iattr); + kfree(iomaps); + return nfserrno(error); +} + +const struct nfsd4_layout_ops bl_layout_ops = { + .proc_getdeviceinfo = nfsd4_block_proc_getdeviceinfo, + .encode_getdeviceinfo = nfsd4_block_encode_getdeviceinfo, + .proc_layoutget = nfsd4_block_proc_layoutget, + .encode_layoutget = nfsd4_block_encode_layoutget, + .proc_layoutcommit = nfsd4_block_proc_layoutcommit, +}; diff --git a/fs/nfsd/blocklayoutxdr.c b/fs/nfsd/blocklayoutxdr.c new file mode 100644 index 0000000..9da89fd --- /dev/null +++ b/fs/nfsd/blocklayoutxdr.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ +#include <linux/sunrpc/svc.h> +#include <linux/exportfs.h> +#include <linux/nfs4.h> + +#include "nfsd.h" +#include "blocklayoutxdr.h" + +#define NFSDDBG_FACILITY NFSDDBG_PNFS + + +__be32 +nfsd4_block_encode_layoutget(struct xdr_stream *xdr, + struct nfsd4_layoutget *lgp) +{ + struct pnfs_block_extent *b = lgp->lg_content; + int len = sizeof(__be32) + 5 * sizeof(__be64) + sizeof(__be32); + __be32 *p; + + p = xdr_reserve_space(xdr, sizeof(__be32) + len); + if (!p) + return nfserr_toosmall; + + *p++ = cpu_to_be32(len); + *p++ = cpu_to_be32(1); /* we always return a single extent */ + + p = xdr_encode_opaque_fixed(p, &b->vol_id, + sizeof(struct nfsd4_deviceid)); + p = xdr_encode_hyper(p, b->foff); + p = xdr_encode_hyper(p, b->len); + p = xdr_encode_hyper(p, b->soff); + *p++ = cpu_to_be32(b->es); + return 0; +} + +static int +nfsd4_block_encode_volume(struct xdr_stream *xdr, struct pnfs_block_volume *b) +{ + __be32 *p; + int len; + + switch (b->type) { + case PNFS_BLOCK_VOLUME_SIMPLE: + len = 4 + 4 + 8 + 4 + b->simple.sig_len; + p = xdr_reserve_space(xdr, len); + if (!p) + return -ETOOSMALL; + + *p++ = cpu_to_be32(b->type); + *p++ = cpu_to_be32(1); /* single signature */ + p = xdr_encode_hyper(p, b->simple.offset); + p = xdr_encode_opaque(p, b->simple.sig, b->simple.sig_len); + break; + default: + return -ENOTSUPP; + } + + return len; +} + +__be32 +nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, + struct nfsd4_getdeviceinfo *gdp) +{ + struct pnfs_block_deviceaddr *dev = gdp->gd_device; + int len = sizeof(__be32), ret, i; + __be32 *p; + + p = xdr_reserve_space(xdr, len + sizeof(__be32)); + if (!p) + return nfserr_resource; + + for (i = 0; i < dev->nr_volumes; i++) { + ret = nfsd4_block_encode_volume(xdr, &dev->volumes[i]); + if (ret < 0) + return nfserrno(ret); + len += ret; + } + + /* + * Fill in the overall length and number of volumes at the beginning + * of the layout. + */ + *p++ = cpu_to_be32(len); + *p++ = cpu_to_be32(dev->nr_volumes); + return 0; +} + +int +nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, + u32 block_size) +{ + struct iomap *iomaps; + u32 nr_iomaps, expected, i; + + if (len < sizeof(u32)) { + dprintk("%s: extent array too small: %u\n", __func__, len); + return -EINVAL; + } + + nr_iomaps = be32_to_cpup(p++); + expected = sizeof(__be32) + nr_iomaps * NFS4_BLOCK_EXTENT_SIZE; + if (len != expected) { + dprintk("%s: extent array size mismatch: %u/%u\n", + __func__, len, expected); + return -EINVAL; + } + + iomaps = kcalloc(nr_iomaps, sizeof(*iomaps), GFP_KERNEL); + if (!iomaps) { + dprintk("%s: failed to allocate extent array\n", __func__); + return -ENOMEM; + } + + for (i = 0; i < nr_iomaps; i++) { + struct pnfs_block_extent bex; + + memcpy(&bex.vol_id, p, sizeof(struct nfsd4_deviceid)); + p += XDR_QUADLEN(sizeof(struct nfsd4_deviceid)); + + p = xdr_decode_hyper(p, &bex.foff); + if (bex.foff & (block_size - 1)) { + dprintk("%s: unaligned offset %lld\n", + __func__, bex.foff); + goto fail; + } + p = xdr_decode_hyper(p, &bex.len); + if (bex.len & (block_size - 1)) { + dprintk("%s: unaligned length %lld\n", + __func__, bex.foff); + goto fail; + } + p = xdr_decode_hyper(p, &bex.soff); + if (bex.soff & (block_size - 1)) { + dprintk("%s: unaligned disk offset %lld\n", + __func__, bex.soff); + goto fail; + } + bex.es = be32_to_cpup(p++); + if (bex.es != PNFS_BLOCK_READWRITE_DATA) { + dprintk("%s: incorrect extent state %d\n", + __func__, bex.es); + goto fail; + } + + iomaps[i].offset = bex.foff; + iomaps[i].length = bex.len; + } + + *iomapp = iomaps; + return nr_iomaps; +fail: + kfree(iomaps); + return -EINVAL; +} diff --git a/fs/nfsd/blocklayoutxdr.h b/fs/nfsd/blocklayoutxdr.h new file mode 100644 index 0000000..fdc7903 --- /dev/null +++ b/fs/nfsd/blocklayoutxdr.h @@ -0,0 +1,62 @@ +#ifndef _NFSD_BLOCKLAYOUTXDR_H +#define _NFSD_BLOCKLAYOUTXDR_H 1 + +#include <linux/blkdev.h> +#include "xdr4.h" + +struct iomap; +struct xdr_stream; + +enum pnfs_block_extent_state { + PNFS_BLOCK_READWRITE_DATA = 0, + PNFS_BLOCK_READ_DATA = 1, + PNFS_BLOCK_INVALID_DATA = 2, + PNFS_BLOCK_NONE_DATA = 3, +}; + +struct pnfs_block_extent { + struct nfsd4_deviceid vol_id; + u64 foff; + u64 len; + u64 soff; + enum pnfs_block_extent_state es; +}; +#define NFS4_BLOCK_EXTENT_SIZE 44 + +enum pnfs_block_volume_type { + PNFS_BLOCK_VOLUME_SIMPLE = 0, + PNFS_BLOCK_VOLUME_SLICE = 1, + PNFS_BLOCK_VOLUME_CONCAT = 2, + PNFS_BLOCK_VOLUME_STRIPE = 3, +}; + +/* + * Random upper cap for the uuid length to avoid unbounded allocation. + * Not actually limited by the protocol. + */ +#define PNFS_BLOCK_UUID_LEN 128 + +struct pnfs_block_volume { + enum pnfs_block_volume_type type; + union { + struct { + u64 offset; + u32 sig_len; + u8 sig[PNFS_BLOCK_UUID_LEN]; + } simple; + }; +}; + +struct pnfs_block_deviceaddr { + u32 nr_volumes; + struct pnfs_block_volume volumes[]; +}; + +__be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, + struct nfsd4_getdeviceinfo *gdp); +__be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr, + struct nfsd4_layoutget *lgp); +int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, + u32 block_size); + +#endif /* _NFSD_BLOCKLAYOUTXDR_H */ diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index 30a739d..c3e3b6e 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -20,6 +20,7 @@ #include "nfsd.h" #include "nfsfh.h" #include "netns.h" +#include "pnfs.h" #define NFSDDBG_FACILITY NFSDDBG_EXPORT @@ -545,6 +546,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen) exp.ex_client = dom; exp.cd = cd; + exp.ex_devid_map = NULL; /* expiry */ err = -EINVAL; @@ -621,6 +623,8 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen) if (!gid_valid(exp.ex_anon_gid)) goto out4; err = 0; + + nfsd4_setup_layout_type(&exp); } expp = svc_export_lookup(&exp); @@ -703,6 +707,7 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem) new->ex_fslocs.locations = NULL; new->ex_fslocs.locations_count = 0; new->ex_fslocs.migrated = 0; + new->ex_layout_type = 0; new->ex_uuid = NULL; new->cd = item->cd; } @@ -717,6 +722,8 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem) new->ex_anon_uid = item->ex_anon_uid; new->ex_anon_gid = item->ex_anon_gid; new->ex_fsid = item->ex_fsid; + new->ex_devid_map = item->ex_devid_map; + item->ex_devid_map = NULL; new->ex_uuid = item->ex_uuid; item->ex_uuid = NULL; new->ex_fslocs.locations = item->ex_fslocs.locations; @@ -725,6 +732,7 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem) item->ex_fslocs.locations_count = 0; new->ex_fslocs.migrated = item->ex_fslocs.migrated; item->ex_fslocs.migrated = 0; + new->ex_layout_type = item->ex_layout_type; new->ex_nflavors = item->ex_nflavors; for (i = 0; i < MAX_SECINFO_LIST; i++) { new->ex_flavors[i] = item->ex_flavors[i]; diff --git a/fs/nfsd/export.h b/fs/nfsd/export.h index 04dc8c1..1f52bfc 100644 --- a/fs/nfsd/export.h +++ b/fs/nfsd/export.h @@ -56,6 +56,8 @@ struct svc_export { struct nfsd4_fs_locations ex_fslocs; uint32_t ex_nflavors; struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST]; + enum pnfs_layouttype ex_layout_type; + struct nfsd4_deviceid_map *ex_devid_map; struct cache_detail *cd; }; diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 7cbdf1b..5827785 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -546,6 +546,102 @@ out: return status; } +#ifdef CONFIG_NFSD_PNFS +/* + * CB_LAYOUTRECALL4args + * + * struct layoutrecall_file4 { + * nfs_fh4 lor_fh; + * offset4 lor_offset; + * length4 lor_length; + * stateid4 lor_stateid; + * }; + * + * union layoutrecall4 switch(layoutrecall_type4 lor_recalltype) { + * case LAYOUTRECALL4_FILE: + * layoutrecall_file4 lor_layout; + * case LAYOUTRECALL4_FSID: + * fsid4 lor_fsid; + * case LAYOUTRECALL4_ALL: + * void; + * }; + * + * struct CB_LAYOUTRECALL4args { + * layouttype4 clora_type; + * layoutiomode4 clora_iomode; + * bool clora_changed; + * layoutrecall4 clora_recall; + * }; + */ +static void encode_cb_layout4args(struct xdr_stream *xdr, + const struct nfs4_layout_stateid *ls, + struct nfs4_cb_compound_hdr *hdr) +{ + __be32 *p; + + BUG_ON(hdr->minorversion == 0); + + p = xdr_reserve_space(xdr, 5 * 4); + *p++ = cpu_to_be32(OP_CB_LAYOUTRECALL); + *p++ = cpu_to_be32(ls->ls_layout_type); + *p++ = cpu_to_be32(IOMODE_ANY); + *p++ = cpu_to_be32(1); + *p = cpu_to_be32(RETURN_FILE); + + encode_nfs_fh4(xdr, &ls->ls_stid.sc_file->fi_fhandle); + + p = xdr_reserve_space(xdr, 2 * 8); + p = xdr_encode_hyper(p, 0); + xdr_encode_hyper(p, NFS4_MAX_UINT64); + + encode_stateid4(xdr, &ls->ls_recall_sid); + + hdr->nops++; +} + +static void nfs4_xdr_enc_cb_layout(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfsd4_callback *cb) +{ + const struct nfs4_layout_stateid *ls = + container_of(cb, struct nfs4_layout_stateid, ls_recall); + struct nfs4_cb_compound_hdr hdr = { + .ident = 0, + .minorversion = cb->cb_minorversion, + }; + + encode_cb_compound4args(xdr, &hdr); + encode_cb_sequence4args(xdr, cb, &hdr); + encode_cb_layout4args(xdr, ls, &hdr); + encode_cb_nops(&hdr); +} + +static int nfs4_xdr_dec_cb_layout(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfsd4_callback *cb) +{ + struct nfs4_cb_compound_hdr hdr; + enum nfsstat4 nfserr; + int status; + + status = decode_cb_compound4res(xdr, &hdr); + if (unlikely(status)) + goto out; + if (cb) { + status = decode_cb_sequence4res(xdr, cb); + if (unlikely(status)) + goto out; + } + status = decode_cb_op_status(xdr, OP_CB_LAYOUTRECALL, &nfserr); + if (unlikely(status)) + goto out; + if (unlikely(nfserr != NFS4_OK)) + status = nfs_cb_stat_to_errno(nfserr); +out: + return status; +} +#endif /* CONFIG_NFSD_PNFS */ + /* * RPC procedure tables */ @@ -563,6 +659,9 @@ out: static struct rpc_procinfo nfs4_cb_procedures[] = { PROC(CB_NULL, NULL, cb_null, cb_null), PROC(CB_RECALL, COMPOUND, cb_recall, cb_recall), +#ifdef CONFIG_NFSD_PNFS + PROC(CB_LAYOUT, COMPOUND, cb_layout, cb_layout), +#endif }; static struct rpc_version nfs_cb_version4 = { diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c new file mode 100644 index 0000000..3c1bfa1 --- /dev/null +++ b/fs/nfsd/nfs4layouts.c @@ -0,0 +1,721 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ +#include <linux/kmod.h> +#include <linux/file.h> +#include <linux/jhash.h> +#include <linux/sched.h> +#include <linux/sunrpc/addr.h> + +#include "pnfs.h" +#include "netns.h" +#include "trace.h" + +#define NFSDDBG_FACILITY NFSDDBG_PNFS + +struct nfs4_layout { + struct list_head lo_perstate; + struct nfs4_layout_stateid *lo_state; + struct nfsd4_layout_seg lo_seg; +}; + +static struct kmem_cache *nfs4_layout_cache; +static struct kmem_cache *nfs4_layout_stateid_cache; + +static struct nfsd4_callback_ops nfsd4_cb_layout_ops; +static const struct lock_manager_operations nfsd4_layouts_lm_ops; + +const struct nfsd4_layout_ops *nfsd4_layout_ops[LAYOUT_TYPE_MAX] = { + [LAYOUT_BLOCK_VOLUME] = &bl_layout_ops, +}; + +/* pNFS device ID to export fsid mapping */ +#define DEVID_HASH_BITS 8 +#define DEVID_HASH_SIZE (1 << DEVID_HASH_BITS) +#define DEVID_HASH_MASK (DEVID_HASH_SIZE - 1) +static u64 nfsd_devid_seq = 1; +static struct list_head nfsd_devid_hash[DEVID_HASH_SIZE]; +static DEFINE_SPINLOCK(nfsd_devid_lock); + +static inline u32 devid_hashfn(u64 idx) +{ + return jhash_2words(idx, idx >> 32, 0) & DEVID_HASH_MASK; +} + +static void +nfsd4_alloc_devid_map(const struct svc_fh *fhp) +{ + const struct knfsd_fh *fh = &fhp->fh_handle; + size_t fsid_len = key_len(fh->fh_fsid_type); + struct nfsd4_deviceid_map *map, *old; + int i; + + map = kzalloc(sizeof(*map) + fsid_len, GFP_KERNEL); + if (!map) + return; + + map->fsid_type = fh->fh_fsid_type; + memcpy(&map->fsid, fh->fh_fsid, fsid_len); + + spin_lock(&nfsd_devid_lock); + if (fhp->fh_export->ex_devid_map) + goto out_unlock; + + for (i = 0; i < DEVID_HASH_SIZE; i++) { + list_for_each_entry(old, &nfsd_devid_hash[i], hash) { + if (old->fsid_type != fh->fh_fsid_type) + continue; + if (memcmp(old->fsid, fh->fh_fsid, + key_len(old->fsid_type))) + continue; + + fhp->fh_export->ex_devid_map = old; + goto out_unlock; + } + } + + map->idx = nfsd_devid_seq++; + list_add_tail_rcu(&map->hash, &nfsd_devid_hash[devid_hashfn(map->idx)]); + fhp->fh_export->ex_devid_map = map; + map = NULL; + +out_unlock: + spin_unlock(&nfsd_devid_lock); + kfree(map); +} + +struct nfsd4_deviceid_map * +nfsd4_find_devid_map(int idx) +{ + struct nfsd4_deviceid_map *map, *ret = NULL; + + rcu_read_lock(); + list_for_each_entry_rcu(map, &nfsd_devid_hash[devid_hashfn(idx)], hash) + if (map->idx == idx) + ret = map; + rcu_read_unlock(); + + return ret; +} + +int +nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, + u32 device_generation) +{ + if (!fhp->fh_export->ex_devid_map) { + nfsd4_alloc_devid_map(fhp); + if (!fhp->fh_export->ex_devid_map) + return -ENOMEM; + } + + id->fsid_idx = fhp->fh_export->ex_devid_map->idx; + id->generation = device_generation; + id->pad = 0; + return 0; +} + +void nfsd4_setup_layout_type(struct svc_export *exp) +{ + struct super_block *sb = exp->ex_path.mnt->mnt_sb; + + if (exp->ex_flags & NFSEXP_NOPNFS) + return; + + if (sb->s_export_op->get_uuid && + sb->s_export_op->map_blocks && + sb->s_export_op->commit_blocks) + exp->ex_layout_type = LAYOUT_BLOCK_VOLUME; +} + +static void +nfsd4_free_layout_stateid(struct nfs4_stid *stid) +{ + struct nfs4_layout_stateid *ls = layoutstateid(stid); + struct nfs4_client *clp = ls->ls_stid.sc_client; + struct nfs4_file *fp = ls->ls_stid.sc_file; + + trace_layoutstate_free(&ls->ls_stid.sc_stateid); + + spin_lock(&clp->cl_lock); + list_del_init(&ls->ls_perclnt); + spin_unlock(&clp->cl_lock); + + spin_lock(&fp->fi_lock); + list_del_init(&ls->ls_perfile); + spin_unlock(&fp->fi_lock); + + vfs_setlease(ls->ls_file, F_UNLCK, NULL, (void **)&ls); + fput(ls->ls_file); + + if (ls->ls_recalled) + atomic_dec(&ls->ls_stid.sc_file->fi_lo_recalls); + + kmem_cache_free(nfs4_layout_stateid_cache, ls); +} + +static int +nfsd4_layout_setlease(struct nfs4_layout_stateid *ls) +{ + struct file_lock *fl; + int status; + + fl = locks_alloc_lock(); + if (!fl) + return -ENOMEM; + locks_init_lock(fl); + fl->fl_lmops = &nfsd4_layouts_lm_ops; + fl->fl_flags = FL_LAYOUT; + fl->fl_type = F_RDLCK; + fl->fl_end = OFFSET_MAX; + fl->fl_owner = ls; + fl->fl_pid = current->tgid; + fl->fl_file = ls->ls_file; + + status = vfs_setlease(fl->fl_file, fl->fl_type, &fl, NULL); + if (status) { + locks_free_lock(fl); + return status; + } + BUG_ON(fl != NULL); + return 0; +} + +static struct nfs4_layout_stateid * +nfsd4_alloc_layout_stateid(struct nfsd4_compound_state *cstate, + struct nfs4_stid *parent, u32 layout_type) +{ + struct nfs4_client *clp = cstate->clp; + struct nfs4_file *fp = parent->sc_file; + struct nfs4_layout_stateid *ls; + struct nfs4_stid *stp; + + stp = nfs4_alloc_stid(cstate->clp, nfs4_layout_stateid_cache); + if (!stp) + return NULL; + stp->sc_free = nfsd4_free_layout_stateid; + get_nfs4_file(fp); + stp->sc_file = fp; + + ls = layoutstateid(stp); + INIT_LIST_HEAD(&ls->ls_perclnt); + INIT_LIST_HEAD(&ls->ls_perfile); + spin_lock_init(&ls->ls_lock); + INIT_LIST_HEAD(&ls->ls_layouts); + ls->ls_layout_type = layout_type; + nfsd4_init_cb(&ls->ls_recall, clp, &nfsd4_cb_layout_ops, + NFSPROC4_CLNT_CB_LAYOUT); + + if (parent->sc_type == NFS4_DELEG_STID) + ls->ls_file = get_file(fp->fi_deleg_file); + else + ls->ls_file = find_any_file(fp); + BUG_ON(!ls->ls_file); + + if (nfsd4_layout_setlease(ls)) { + put_nfs4_file(fp); + kmem_cache_free(nfs4_layout_stateid_cache, ls); + return NULL; + } + + spin_lock(&clp->cl_lock); + stp->sc_type = NFS4_LAYOUT_STID; + list_add(&ls->ls_perclnt, &clp->cl_lo_states); + spin_unlock(&clp->cl_lock); + + spin_lock(&fp->fi_lock); + list_add(&ls->ls_perfile, &fp->fi_lo_states); + spin_unlock(&fp->fi_lock); + + trace_layoutstate_alloc(&ls->ls_stid.sc_stateid); + return ls; +} + +__be32 +nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, stateid_t *stateid, + bool create, u32 layout_type, struct nfs4_layout_stateid **lsp) +{ + struct nfs4_layout_stateid *ls; + struct nfs4_stid *stid; + unsigned char typemask = NFS4_LAYOUT_STID; + __be32 status; + + if (create) + typemask |= (NFS4_OPEN_STID | NFS4_LOCK_STID | NFS4_DELEG_STID); + + status = nfsd4_lookup_stateid(cstate, stateid, typemask, &stid, + net_generic(SVC_NET(rqstp), nfsd_net_id)); + if (status) + goto out; + + if (!fh_match(&cstate->current_fh.fh_handle, + &stid->sc_file->fi_fhandle)) { + status = nfserr_bad_stateid; + goto out_put_stid; + } + + if (stid->sc_type != NFS4_LAYOUT_STID) { + ls = nfsd4_alloc_layout_stateid(cstate, stid, layout_type); + nfs4_put_stid(stid); + + status = nfserr_jukebox; + if (!ls) + goto out; + } else { + ls = container_of(stid, struct nfs4_layout_stateid, ls_stid); + + status = nfserr_bad_stateid; + if (stateid->si_generation > stid->sc_stateid.si_generation) + goto out_put_stid; + if (layout_type != ls->ls_layout_type) + goto out_put_stid; + } + + *lsp = ls; + return 0; + +out_put_stid: + nfs4_put_stid(stid); +out: + return status; +} + +static void +nfsd4_recall_file_layout(struct nfs4_layout_stateid *ls) +{ + spin_lock(&ls->ls_lock); + if (ls->ls_recalled) + goto out_unlock; + + ls->ls_recalled = true; + atomic_inc(&ls->ls_stid.sc_file->fi_lo_recalls); + if (list_empty(&ls->ls_layouts)) + goto out_unlock; + + trace_layout_recall(&ls->ls_stid.sc_stateid); + + atomic_inc(&ls->ls_stid.sc_count); + update_stateid(&ls->ls_stid.sc_stateid); + memcpy(&ls->ls_recall_sid, &ls->ls_stid.sc_stateid, sizeof(stateid_t)); + nfsd4_run_cb(&ls->ls_recall); + +out_unlock: + spin_unlock(&ls->ls_lock); +} + +static inline u64 +layout_end(struct nfsd4_layout_seg *seg) +{ + u64 end = seg->offset + seg->length; + return end >= seg->offset ? end : NFS4_MAX_UINT64; +} + +static void +layout_update_len(struct nfsd4_layout_seg *lo, u64 end) +{ + if (end == NFS4_MAX_UINT64) + lo->length = NFS4_MAX_UINT64; + else + lo->length = end - lo->offset; +} + +static bool +layouts_overlapping(struct nfs4_layout *lo, struct nfsd4_layout_seg *s) +{ + if (s->iomode != IOMODE_ANY && s->iomode != lo->lo_seg.iomode) + return false; + if (layout_end(&lo->lo_seg) <= s->offset) + return false; + if (layout_end(s) <= lo->lo_seg.offset) + return false; + return true; +} + +static bool +layouts_try_merge(struct nfsd4_layout_seg *lo, struct nfsd4_layout_seg *new) +{ + if (lo->iomode != new->iomode) + return false; + if (layout_end(new) < lo->offset) + return false; + if (layout_end(lo) < new->offset) + return false; + + lo->offset = min(lo->offset, new->offset); + layout_update_len(lo, max(layout_end(lo), layout_end(new))); + return true; +} + +static __be32 +nfsd4_recall_conflict(struct nfs4_layout_stateid *ls) +{ + struct nfs4_file *fp = ls->ls_stid.sc_file; + struct nfs4_layout_stateid *l, *n; + __be32 nfserr = nfs_ok; + + assert_spin_locked(&fp->fi_lock); + + list_for_each_entry_safe(l, n, &fp->fi_lo_states, ls_perfile) { + if (l != ls) { + nfsd4_recall_file_layout(l); + nfserr = nfserr_recallconflict; + } + } + + return nfserr; +} + +__be32 +nfsd4_insert_layout(struct nfsd4_layoutget *lgp, struct nfs4_layout_stateid *ls) +{ + struct nfsd4_layout_seg *seg = &lgp->lg_seg; + struct nfs4_file *fp = ls->ls_stid.sc_file; + struct nfs4_layout *lp, *new = NULL; + __be32 nfserr; + + spin_lock(&fp->fi_lock); + nfserr = nfsd4_recall_conflict(ls); + if (nfserr) + goto out; + spin_lock(&ls->ls_lock); + list_for_each_entry(lp, &ls->ls_layouts, lo_perstate) { + if (layouts_try_merge(&lp->lo_seg, seg)) + goto done; + } + spin_unlock(&ls->ls_lock); + spin_unlock(&fp->fi_lock); + + new = kmem_cache_alloc(nfs4_layout_cache, GFP_KERNEL); + if (!new) + return nfserr_jukebox; + memcpy(&new->lo_seg, seg, sizeof(lp->lo_seg)); + new->lo_state = ls; + + spin_lock(&fp->fi_lock); + nfserr = nfsd4_recall_conflict(ls); + if (nfserr) + goto out; + spin_lock(&ls->ls_lock); + list_for_each_entry(lp, &ls->ls_layouts, lo_perstate) { + if (layouts_try_merge(&lp->lo_seg, seg)) + goto done; + } + + atomic_inc(&ls->ls_stid.sc_count); + list_add_tail(&new->lo_perstate, &ls->ls_layouts); + new = NULL; +done: + update_stateid(&ls->ls_stid.sc_stateid); + memcpy(&lgp->lg_sid, &ls->ls_stid.sc_stateid, sizeof(stateid_t)); + spin_unlock(&ls->ls_lock); +out: + spin_unlock(&fp->fi_lock); + if (new) + kmem_cache_free(nfs4_layout_cache, new); + return nfserr; +} + +static void +nfsd4_free_layouts(struct list_head *reaplist) +{ + while (!list_empty(reaplist)) { + struct nfs4_layout *lp = list_first_entry(reaplist, + struct nfs4_layout, lo_perstate); + + list_del(&lp->lo_perstate); + nfs4_put_stid(&lp->lo_state->ls_stid); + kmem_cache_free(nfs4_layout_cache, lp); + } +} + +static void +nfsd4_return_file_layout(struct nfs4_layout *lp, struct nfsd4_layout_seg *seg, + struct list_head *reaplist) +{ + struct nfsd4_layout_seg *lo = &lp->lo_seg; + u64 end = layout_end(lo); + + if (seg->offset <= lo->offset) { + if (layout_end(seg) >= end) { + list_move_tail(&lp->lo_perstate, reaplist); + return; + } + end = seg->offset; + } else { + /* retain the whole layout segment on a split. */ + if (layout_end(seg) < end) { + dprintk("%s: split not supported\n", __func__); + return; + } + + lo->offset = layout_end(seg); + } + + layout_update_len(lo, end); +} + +__be32 +nfsd4_return_file_layouts(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutreturn *lrp) +{ + struct nfs4_layout_stateid *ls; + struct nfs4_layout *lp, *n; + LIST_HEAD(reaplist); + __be32 nfserr; + int found = 0; + + nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lrp->lr_sid, + false, lrp->lr_layout_type, + &ls); + if (nfserr) { + trace_layout_return_lookup_fail(&lrp->lr_sid); + return nfserr; + } + + spin_lock(&ls->ls_lock); + list_for_each_entry_safe(lp, n, &ls->ls_layouts, lo_perstate) { + if (layouts_overlapping(lp, &lrp->lr_seg)) { + nfsd4_return_file_layout(lp, &lrp->lr_seg, &reaplist); + found++; + } + } + if (!list_empty(&ls->ls_layouts)) { + if (found) { + update_stateid(&ls->ls_stid.sc_stateid); + memcpy(&lrp->lr_sid, &ls->ls_stid.sc_stateid, + sizeof(stateid_t)); + } + lrp->lrs_present = 1; + } else { + trace_layoutstate_unhash(&ls->ls_stid.sc_stateid); + nfs4_unhash_stid(&ls->ls_stid); + lrp->lrs_present = 0; + } + spin_unlock(&ls->ls_lock); + + nfs4_put_stid(&ls->ls_stid); + nfsd4_free_layouts(&reaplist); + return nfs_ok; +} + +__be32 +nfsd4_return_client_layouts(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutreturn *lrp) +{ + struct nfs4_layout_stateid *ls, *n; + struct nfs4_client *clp = cstate->clp; + struct nfs4_layout *lp, *t; + LIST_HEAD(reaplist); + + lrp->lrs_present = 0; + + spin_lock(&clp->cl_lock); + list_for_each_entry_safe(ls, n, &clp->cl_lo_states, ls_perclnt) { + if (lrp->lr_return_type == RETURN_FSID && + !fh_fsid_match(&ls->ls_stid.sc_file->fi_fhandle, + &cstate->current_fh.fh_handle)) + continue; + + spin_lock(&ls->ls_lock); + list_for_each_entry_safe(lp, t, &ls->ls_layouts, lo_perstate) { + if (lrp->lr_seg.iomode == IOMODE_ANY || + lrp->lr_seg.iomode == lp->lo_seg.iomode) + list_move_tail(&lp->lo_perstate, &reaplist); + } + spin_unlock(&ls->ls_lock); + } + spin_unlock(&clp->cl_lock); + + nfsd4_free_layouts(&reaplist); + return 0; +} + +static void +nfsd4_return_all_layouts(struct nfs4_layout_stateid *ls, + struct list_head *reaplist) +{ + spin_lock(&ls->ls_lock); + list_splice_init(&ls->ls_layouts, reaplist); + spin_unlock(&ls->ls_lock); +} + +void +nfsd4_return_all_client_layouts(struct nfs4_client *clp) +{ + struct nfs4_layout_stateid *ls, *n; + LIST_HEAD(reaplist); + + spin_lock(&clp->cl_lock); + list_for_each_entry_safe(ls, n, &clp->cl_lo_states, ls_perclnt) + nfsd4_return_all_layouts(ls, &reaplist); + spin_unlock(&clp->cl_lock); + + nfsd4_free_layouts(&reaplist); +} + +void +nfsd4_return_all_file_layouts(struct nfs4_client *clp, struct nfs4_file *fp) +{ + struct nfs4_layout_stateid *ls, *n; + LIST_HEAD(reaplist); + + spin_lock(&fp->fi_lock); + list_for_each_entry_safe(ls, n, &fp->fi_lo_states, ls_perfile) { + if (ls->ls_stid.sc_client == clp) + nfsd4_return_all_layouts(ls, &reaplist); + } + spin_unlock(&fp->fi_lock); + + nfsd4_free_layouts(&reaplist); +} + +static void +nfsd4_cb_layout_fail(struct nfs4_layout_stateid *ls) +{ + struct nfs4_client *clp = ls->ls_stid.sc_client; + char addr_str[INET6_ADDRSTRLEN]; + static char *envp[] = { + "HOME=/", + "TERM=linux", + "PATH=/sbin:/usr/sbin:/bin:/usr/bin", + NULL + }; + char *argv[8]; + int error; + + rpc_ntop((struct sockaddr *)&clp->cl_addr, addr_str, sizeof(addr_str)); + + nfsd4_cb_layout_fail(ls); + + printk(KERN_WARNING + "nfsd: client %s failed to respond to layout recall. " + " Fencing..\n", addr_str); + + argv[0] = "/sbin/nfsd-recall-failed"; + argv[1] = addr_str; + argv[2] = ls->ls_file->f_path.mnt->mnt_sb->s_id; + argv[3] = NULL; + + error = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC); + if (error) { + printk(KERN_ERR "nfsd: fence failed for client %s: %d!\n", + addr_str, error); + } +} + +static int +nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task) +{ + struct nfs4_layout_stateid *ls = + container_of(cb, struct nfs4_layout_stateid, ls_recall); + LIST_HEAD(reaplist); + + switch (task->tk_status) { + case 0: + return 1; + case -NFS4ERR_NOMATCHING_LAYOUT: + trace_layout_recall_done(&ls->ls_stid.sc_stateid); + task->tk_status = 0; + return 1; + case -NFS4ERR_DELAY: + /* Poll the client until it's done with the layout */ + /* FIXME: cap number of retries. + * The pnfs standard states that we need to only expire + * the client after at-least "lease time" .eg lease-time * 2 + * when failing to communicate a recall + */ + rpc_delay(task, HZ/100); /* 10 mili-seconds */ + return 0; + default: + /* + * Unknown error or non-responding client, we'll need to fence. + */ + nfsd4_cb_layout_fail(ls); + return -1; + } +} + +static void +nfsd4_cb_layout_release(struct nfsd4_callback *cb) +{ + struct nfs4_layout_stateid *ls = + container_of(cb, struct nfs4_layout_stateid, ls_recall); + LIST_HEAD(reaplist); + + trace_layout_recall_release(&ls->ls_stid.sc_stateid); + + nfsd4_return_all_layouts(ls, &reaplist); + nfsd4_free_layouts(&reaplist); + nfs4_put_stid(&ls->ls_stid); +} + +static struct nfsd4_callback_ops nfsd4_cb_layout_ops = { + .done = nfsd4_cb_layout_done, + .release = nfsd4_cb_layout_release, +}; + +static bool +nfsd4_layout_lm_break(struct file_lock *fl) +{ + /* + * We don't want the locks code to timeout the lease for us; + * we'll remove it ourself if a layout isn't returned + * in time: + */ + fl->fl_break_time = 0; + nfsd4_recall_file_layout(fl->fl_owner); + return false; +} + +static int +nfsd4_layout_lm_change(struct file_lock *onlist, int arg, + struct list_head *dispose) +{ + BUG_ON(!(arg & F_UNLCK)); + return lease_modify(onlist, arg, dispose); +} + +static const struct lock_manager_operations nfsd4_layouts_lm_ops = { + .lm_break = nfsd4_layout_lm_break, + .lm_change = nfsd4_layout_lm_change, +}; + +int +nfsd4_init_pnfs(void) +{ + int i; + + for (i = 0; i < DEVID_HASH_SIZE; i++) + INIT_LIST_HEAD(&nfsd_devid_hash[i]); + + nfs4_layout_cache = kmem_cache_create("nfs4_layout", + sizeof(struct nfs4_layout), 0, 0, NULL); + if (!nfs4_layout_cache) + return -ENOMEM; + + nfs4_layout_stateid_cache = kmem_cache_create("nfs4_layout_stateid", + sizeof(struct nfs4_layout_stateid), 0, 0, NULL); + if (!nfs4_layout_stateid_cache) { + kmem_cache_destroy(nfs4_layout_cache); + return -ENOMEM; + } + return 0; +} + +void +nfsd4_exit_pnfs(void) +{ + int i; + + kmem_cache_destroy(nfs4_layout_cache); + kmem_cache_destroy(nfs4_layout_stateid_cache); + + for (i = 0; i < DEVID_HASH_SIZE; i++) { + struct nfsd4_deviceid_map *map, *n; + + list_for_each_entry_safe(map, n, &nfsd_devid_hash[i], hash) + kfree(map); + } +} diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index ac71d13..d30bea8d 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -43,6 +43,8 @@ #include "current_stateid.h" #include "netns.h" #include "acl.h" +#include "pnfs.h" +#include "trace.h" #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #include <linux/security.h> @@ -1178,6 +1180,259 @@ nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, return status == nfserr_same ? nfs_ok : status; } +#ifdef CONFIG_NFSD_PNFS +static const struct nfsd4_layout_ops * +nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type) +{ + if (!exp->ex_layout_type) { + dprintk("%s: export does not support pNFS\n", __func__); + return NULL; + } + + if (exp->ex_layout_type != layout_type) { + dprintk("%s: layout type %d not supported\n", + __func__, layout_type); + return NULL; + } + + return nfsd4_layout_ops[layout_type]; +} + +static __be32 +nfsd4_getdeviceinfo(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_getdeviceinfo *gdp) +{ + const struct nfsd4_layout_ops *ops; + struct nfsd4_deviceid_map *map; + struct svc_export *exp; + __be32 nfserr; + + dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n", + __func__, + gdp->gd_layout_type, + gdp->gd_devid.fsid_idx, gdp->gd_devid.generation, + gdp->gd_maxcount); + + map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx); + if (!map) { + dprintk("%s: couldn't find device ID to export mapping!\n", + __func__); + return nfserr_noent; + } + + exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid); + if (IS_ERR(exp)) { + dprintk("%s: could not find device id\n", __func__); + return nfserr_noent; + } + + nfserr = nfserr_layoutunavailable; + ops = nfsd4_layout_verify(exp, gdp->gd_layout_type); + if (!ops) + goto out; + + nfserr = nfs_ok; + if (gdp->gd_maxcount != 0) + nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, gdp); + + gdp->gd_notify_types &= ops->notify_types; + exp_put(exp); +out: + return nfserr; +} + +static __be32 +nfsd4_layoutget(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutget *lgp) +{ + struct svc_fh *current_fh = &cstate->current_fh; + const struct nfsd4_layout_ops *ops; + struct nfs4_layout_stateid *ls; + __be32 nfserr; + int accmode; + + switch (lgp->lg_seg.iomode) { + case IOMODE_READ: + accmode = NFSD_MAY_READ; + break; + case IOMODE_RW: + accmode = NFSD_MAY_READ | NFSD_MAY_WRITE; + break; + default: + dprintk("%s: invalid iomode %d\n", + __func__, lgp->lg_seg.iomode); + nfserr = nfserr_badiomode; + goto out; + } + + nfserr = fh_verify(rqstp, current_fh, 0, accmode); + if (nfserr) + goto out; + + nfserr = nfserr_layoutunavailable; + ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type); + if (!ops) + goto out; + + /* + * Verify minlength and range as per RFC5661: + * o If loga_length is less than loga_minlength, + * the metadata server MUST return NFS4ERR_INVAL. + * o If the sum of loga_offset and loga_minlength exceeds + * NFS4_UINT64_MAX, and loga_minlength is not + * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result. + * o If the sum of loga_offset and loga_length exceeds + * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX, + * the error NFS4ERR_INVAL MUST result. + */ + nfserr = nfserr_inval; + if (lgp->lg_seg.length < lgp->lg_minlength || + (lgp->lg_minlength != NFS4_MAX_UINT64 && + lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) || + (lgp->lg_seg.length != NFS4_MAX_UINT64 && + lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset)) + goto out; + if (lgp->lg_seg.length == 0) + goto out; + + nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid, + true, lgp->lg_layout_type, &ls); + if (nfserr) { + trace_layout_get_lookup_fail(&lgp->lg_sid); + goto out; + } + + nfserr = nfserr_recallconflict; + if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls)) + goto out_put_stid; + + nfserr = ops->proc_layoutget(current_fh->fh_dentry->d_inode, + current_fh, lgp); + if (nfserr) + goto out_put_stid; + + nfserr = nfsd4_insert_layout(lgp, ls); + +out_put_stid: + nfs4_put_stid(&ls->ls_stid); +out: + return nfserr; +} + +static __be32 +nfsd4_layoutcommit(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutcommit *lcp) +{ + const struct nfsd4_layout_seg *seg = &lcp->lc_seg; + struct svc_fh *current_fh = &cstate->current_fh; + const struct nfsd4_layout_ops *ops; + loff_t new_size = lcp->lc_last_wr + 1; + struct inode *inode; + struct nfs4_layout_stateid *ls; + __be32 nfserr; + + nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE); + if (nfserr) + goto out; + + nfserr = nfserr_layoutunavailable; + ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type); + if (!ops) + goto out; + inode = current_fh->fh_dentry->d_inode; + + nfserr = nfserr_inval; + if (new_size <= seg->offset) { + dprintk("pnfsd: last write before layout segment\n"); + goto out; + } + if (new_size > seg->offset + seg->length) { + dprintk("pnfsd: last write beyond layout segment\n"); + goto out; + } + if (!lcp->lc_newoffset && new_size > i_size_read(inode)) { + dprintk("pnfsd: layoutcommit beyond EOF\n"); + goto out; + } + + nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid, + false, lcp->lc_layout_type, + &ls); + if (nfserr) { + trace_layout_commit_lookup_fail(&lcp->lc_sid); + /* fixup error code as per RFC5661 */ + if (nfserr == nfserr_bad_stateid) + nfserr = nfserr_badlayout; + goto out; + } + + nfserr = ops->proc_layoutcommit(inode, lcp); + if (nfserr) + goto out_put_stid; + + if (new_size > i_size_read(inode)) { + lcp->lc_size_chg = 1; + lcp->lc_newsize = new_size; + } else { + lcp->lc_size_chg = 0; + } + +out_put_stid: + nfs4_put_stid(&ls->ls_stid); +out: + return nfserr; +} + +static __be32 +nfsd4_layoutreturn(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutreturn *lrp) +{ + struct svc_fh *current_fh = &cstate->current_fh; + __be32 nfserr; + + nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP); + if (nfserr) + goto out; + + nfserr = nfserr_layoutunavailable; + if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type)) + goto out; + + switch (lrp->lr_seg.iomode) { + case IOMODE_READ: + case IOMODE_RW: + case IOMODE_ANY: + break; + default: + dprintk("%s: invalid iomode %d\n", __func__, + lrp->lr_seg.iomode); + nfserr = nfserr_inval; + goto out; + } + + switch (lrp->lr_return_type) { + case RETURN_FILE: + nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp); + break; + case RETURN_FSID: + case RETURN_ALL: + nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp); + break; + default: + dprintk("%s: invalid return_type %d\n", __func__, + lrp->lr_return_type); + nfserr = nfserr_inval; + break; + } +out: + return nfserr; +} +#endif /* CONFIG_NFSD_PNFS */ + /* * NULL call. */ @@ -1679,6 +1934,36 @@ static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd op_encode_channel_attrs_maxsz) * sizeof(__be32); } +#ifdef CONFIG_NFSD_PNFS +/* + * At this stage we don't really know what layout driver will handle the request, + * so we need to define an arbitrary upper bound here. + */ +#define MAX_LAYOUT_SIZE 128 +static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) +{ + return (op_encode_hdr_size + + 1 /* logr_return_on_close */ + + op_encode_stateid_maxsz + + 1 /* nr of layouts */ + + MAX_LAYOUT_SIZE) * sizeof(__be32); +} + +static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) +{ + return (op_encode_hdr_size + + 1 /* locr_newsize */ + + 2 /* ns_size */) * sizeof(__be32); +} + +static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) +{ + return (op_encode_hdr_size + + 1 /* lrs_stateid */ + + op_encode_stateid_maxsz) * sizeof(__be32); +} +#endif /* CONFIG_NFSD_PNFS */ + static struct nfsd4_operation nfsd4_ops[] = { [OP_ACCESS] = { .op_func = (nfsd4op_func)nfsd4_access, @@ -1966,6 +2251,31 @@ static struct nfsd4_operation nfsd4_ops[] = { .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid, .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, }, +#ifdef CONFIG_NFSD_PNFS + [OP_GETDEVICEINFO] = { + .op_func = (nfsd4op_func)nfsd4_getdeviceinfo, + .op_flags = ALLOWED_WITHOUT_FH, + .op_name = "OP_GETDEVICEINFO", + }, + [OP_LAYOUTGET] = { + .op_func = (nfsd4op_func)nfsd4_layoutget, + .op_flags = OP_MODIFIES_SOMETHING, + .op_name = "OP_LAYOUTGET", + .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutget_rsize, + }, + [OP_LAYOUTCOMMIT] = { + .op_func = (nfsd4op_func)nfsd4_layoutcommit, + .op_flags = OP_MODIFIES_SOMETHING, + .op_name = "OP_LAYOUTCOMMIT", + .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutcommit_rsize, + }, + [OP_LAYOUTRETURN] = { + .op_func = (nfsd4op_func)nfsd4_layoutreturn, + .op_flags = OP_MODIFIES_SOMETHING, + .op_name = "OP_LAYOUTRETURN", + .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutreturn_rsize, + }, +#endif /* CONFIG_NFSD_PNFS */ /* NFSv4.2 operations */ [OP_ALLOCATE] = { diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index c06a1ba..f6b2a09 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -48,6 +48,7 @@ #include "current_stateid.h" #include "netns.h" +#include "pnfs.h" #define NFSDDBG_FACILITY NFSDDBG_PROC @@ -150,16 +151,6 @@ renew_client_locked(struct nfs4_client *clp) clp->cl_time = get_seconds(); } -static inline void -renew_client(struct nfs4_client *clp) -{ - struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); - - spin_lock(&nn->client_lock); - renew_client_locked(clp); - spin_unlock(&nn->client_lock); -} - static void put_client_renew_locked(struct nfs4_client *clp) { struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); @@ -282,7 +273,7 @@ static void nfsd4_free_file_rcu(struct rcu_head *rcu) kmem_cache_free(file_slab, fp); } -static inline void +void put_nfs4_file(struct nfs4_file *fi) { might_lock(&state_lock); @@ -295,12 +286,6 @@ put_nfs4_file(struct nfs4_file *fi) } } -static inline void -get_nfs4_file(struct nfs4_file *fi) -{ - atomic_inc(&fi->fi_ref); -} - static struct file * __nfs4_get_fd(struct nfs4_file *f, int oflag) { @@ -358,7 +343,7 @@ find_readable_file(struct nfs4_file *f) return ret; } -static struct file * +struct file * find_any_file(struct nfs4_file *f) { struct file *ret; @@ -408,14 +393,6 @@ static unsigned int file_hashval(struct knfsd_fh *fh) return nfsd_fh_hashval(fh) & (FILE_HASH_SIZE - 1); } -static bool nfsd_fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2) -{ - return fh1->fh_size == fh2->fh_size && - !memcmp(fh1->fh_base.fh_pad, - fh2->fh_base.fh_pad, - fh1->fh_size); -} - static struct hlist_head file_hashtbl[FILE_HASH_SIZE]; static void @@ -494,7 +471,7 @@ static void nfs4_file_put_access(struct nfs4_file *fp, u32 access) __nfs4_file_put_access(fp, O_RDONLY); } -static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, +struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab) { struct nfs4_stid *stid; @@ -688,17 +665,17 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp) struct file *filp = NULL; spin_lock(&fp->fi_lock); - if (fp->fi_deleg_file && atomic_dec_and_test(&fp->fi_delegees)) + if (fp->fi_deleg_file && --fp->fi_delegees == 0) swap(filp, fp->fi_deleg_file); spin_unlock(&fp->fi_lock); if (filp) { - vfs_setlease(filp, F_UNLCK, NULL, NULL); + vfs_setlease(filp, F_UNLCK, NULL, (void **)&fp); fput(filp); } } -static void unhash_stid(struct nfs4_stid *s) +void nfs4_unhash_stid(struct nfs4_stid *s) { s->sc_type = 0; } @@ -1006,7 +983,7 @@ static void unhash_lock_stateid(struct nfs4_ol_stateid *stp) list_del_init(&stp->st_locks); unhash_ol_stateid(stp); - unhash_stid(&stp->st_stid); + nfs4_unhash_stid(&stp->st_stid); } static void release_lock_stateid(struct nfs4_ol_stateid *stp) @@ -1518,7 +1495,12 @@ unhash_session(struct nfsd4_session *ses) static int STALE_CLIENTID(clientid_t *clid, struct nfsd_net *nn) { - if (clid->cl_boot == nn->boot_time) + /* + * We're assuming the clid was not given out from a boot + * precisely 2^32 (about 136 years) before this one. That seems + * a safe assumption: + */ + if (clid->cl_boot == (u32)nn->boot_time) return 0; dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n", clid->cl_boot, clid->cl_id, nn->boot_time); @@ -1558,6 +1540,9 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name) INIT_LIST_HEAD(&clp->cl_lru); INIT_LIST_HEAD(&clp->cl_callbacks); INIT_LIST_HEAD(&clp->cl_revoked); +#ifdef CONFIG_NFSD_PNFS + INIT_LIST_HEAD(&clp->cl_lo_states); +#endif spin_lock_init(&clp->cl_lock); rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table"); return clp; @@ -1662,6 +1647,7 @@ __destroy_client(struct nfs4_client *clp) nfs4_get_stateowner(&oo->oo_owner); release_openowner(oo); } + nfsd4_return_all_client_layouts(clp); nfsd4_shutdown_callback(clp); if (clp->cl_cb_conn.cb_xprt) svc_xprt_put(clp->cl_cb_conn.cb_xprt); @@ -2145,8 +2131,11 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, static void nfsd4_set_ex_flags(struct nfs4_client *new, struct nfsd4_exchange_id *clid) { - /* pNFS is not supported */ +#ifdef CONFIG_NFSD_PNFS + new->cl_exchange_flags |= EXCHGID4_FLAG_USE_PNFS_MDS; +#else new->cl_exchange_flags |= EXCHGID4_FLAG_USE_NON_PNFS; +#endif /* Referrals are supported, Migration is not. */ new->cl_exchange_flags |= EXCHGID4_FLAG_SUPP_MOVED_REFER; @@ -3074,6 +3063,10 @@ static void nfsd4_init_file(struct knfsd_fh *fh, unsigned int hashval, fp->fi_share_deny = 0; memset(fp->fi_fds, 0, sizeof(fp->fi_fds)); memset(fp->fi_access, 0, sizeof(fp->fi_access)); +#ifdef CONFIG_NFSD_PNFS + INIT_LIST_HEAD(&fp->fi_lo_states); + atomic_set(&fp->fi_lo_recalls, 0); +#endif hlist_add_head_rcu(&fp->fi_hash, &file_hashtbl[hashval]); } @@ -3300,7 +3293,7 @@ find_file_locked(struct knfsd_fh *fh, unsigned int hashval) struct nfs4_file *fp; hlist_for_each_entry_rcu(fp, &file_hashtbl[hashval], fi_hash) { - if (nfsd_fh_match(&fp->fi_fhandle, fh)) { + if (fh_match(&fp->fi_fhandle, fh)) { if (atomic_inc_not_zero(&fp->fi_ref)) return fp; } @@ -3308,7 +3301,7 @@ find_file_locked(struct knfsd_fh *fh, unsigned int hashval) return NULL; } -static struct nfs4_file * +struct nfs4_file * find_file(struct knfsd_fh *fh) { struct nfs4_file *fp; @@ -3477,7 +3470,8 @@ nfsd_break_deleg_cb(struct file_lock *fl) } static int -nfsd_change_deleg_cb(struct file_lock **onlist, int arg, struct list_head *dispose) +nfsd_change_deleg_cb(struct file_lock *onlist, int arg, + struct list_head *dispose) { if (arg & F_UNLCK) return lease_modify(onlist, arg, dispose); @@ -3855,12 +3849,12 @@ static int nfs4_setlease(struct nfs4_delegation *dp) /* Race breaker */ if (fp->fi_deleg_file) { status = 0; - atomic_inc(&fp->fi_delegees); + ++fp->fi_delegees; hash_delegation_locked(dp, fp); goto out_unlock; } fp->fi_deleg_file = filp; - atomic_set(&fp->fi_delegees, 1); + fp->fi_delegees = 1; hash_delegation_locked(dp, fp); spin_unlock(&fp->fi_lock); spin_unlock(&state_lock); @@ -3901,7 +3895,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, status = -EAGAIN; goto out_unlock; } - atomic_inc(&fp->fi_delegees); + ++fp->fi_delegees; hash_delegation_locked(dp, fp); status = 0; out_unlock: @@ -4294,7 +4288,7 @@ laundromat_main(struct work_struct *laundry) static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp) { - if (!nfsd_fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle)) + if (!fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle)) return nfserr_bad_stateid; return nfs_ok; } @@ -4445,7 +4439,7 @@ out_unlock: return status; } -static __be32 +__be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s, struct nfsd_net *nn) @@ -4859,6 +4853,9 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, update_stateid(&stp->st_stid.sc_stateid); memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); + nfsd4_return_all_file_layouts(stp->st_stateowner->so_client, + stp->st_stid.sc_file); + nfsd4_close_open_stateid(stp); /* put reference from nfs4_preprocess_seqid_op */ @@ -5556,10 +5553,11 @@ out_nfserr: static bool check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) { - struct file_lock **flpp; + struct file_lock *fl; int status = false; struct file *filp = find_any_file(fp); struct inode *inode; + struct file_lock_context *flctx; if (!filp) { /* Any valid lock stateid should have some sort of access */ @@ -5568,15 +5566,18 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) } inode = file_inode(filp); + flctx = inode->i_flctx; - spin_lock(&inode->i_lock); - for (flpp = &inode->i_flock; *flpp != NULL; flpp = &(*flpp)->fl_next) { - if ((*flpp)->fl_owner == (fl_owner_t)lowner) { - status = true; - break; + if (flctx && !list_empty_careful(&flctx->flc_posix)) { + spin_lock(&flctx->flc_lock); + list_for_each_entry(fl, &flctx->flc_posix, fl_list) { + if (fl->fl_owner == (fl_owner_t)lowner) { + status = true; + break; + } } + spin_unlock(&flctx->flc_lock); } - spin_unlock(&inode->i_lock); fput(filp); return status; } diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 15f7b73..df5e66c 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -47,6 +47,7 @@ #include "state.h" #include "cache.h" #include "netns.h" +#include "pnfs.h" #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #include <linux/security.h> @@ -234,6 +235,26 @@ static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) return ret; } +/* + * We require the high 32 bits of 'seconds' to be 0, and + * we ignore all 32 bits of 'nseconds'. + */ +static __be32 +nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv) +{ + DECODE_HEAD; + u64 sec; + + READ_BUF(12); + p = xdr_decode_hyper(p, &sec); + tv->tv_sec = sec; + tv->tv_nsec = be32_to_cpup(p++); + if (tv->tv_nsec >= (u32)1000000000) + return nfserr_inval; + + DECODE_TAIL; +} + static __be32 nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) { @@ -267,7 +288,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, { int expected_len, len = 0; u32 dummy32; - u64 sec; char *buf; DECODE_HEAD; @@ -358,15 +378,10 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, dummy32 = be32_to_cpup(p++); switch (dummy32) { case NFS4_SET_TO_CLIENT_TIME: - /* We require the high 32 bits of 'seconds' to be 0, and we ignore - all 32 bits of 'nseconds'. */ - READ_BUF(12); len += 12; - p = xdr_decode_hyper(p, &sec); - iattr->ia_atime.tv_sec = (time_t)sec; - iattr->ia_atime.tv_nsec = be32_to_cpup(p++); - if (iattr->ia_atime.tv_nsec >= (u32)1000000000) - return nfserr_inval; + status = nfsd4_decode_time(argp, &iattr->ia_atime); + if (status) + return status; iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); break; case NFS4_SET_TO_SERVER_TIME: @@ -382,15 +397,10 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, dummy32 = be32_to_cpup(p++); switch (dummy32) { case NFS4_SET_TO_CLIENT_TIME: - /* We require the high 32 bits of 'seconds' to be 0, and we ignore - all 32 bits of 'nseconds'. */ - READ_BUF(12); len += 12; - p = xdr_decode_hyper(p, &sec); - iattr->ia_mtime.tv_sec = sec; - iattr->ia_mtime.tv_nsec = be32_to_cpup(p++); - if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) - return nfserr_inval; + status = nfsd4_decode_time(argp, &iattr->ia_mtime); + if (status) + return status; iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); break; case NFS4_SET_TO_SERVER_TIME: @@ -1513,6 +1523,127 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str DECODE_TAIL; } +#ifdef CONFIG_NFSD_PNFS +static __be32 +nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, + struct nfsd4_getdeviceinfo *gdev) +{ + DECODE_HEAD; + u32 num, i; + + READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4); + COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid)); + gdev->gd_layout_type = be32_to_cpup(p++); + gdev->gd_maxcount = be32_to_cpup(p++); + num = be32_to_cpup(p++); + if (num) { + READ_BUF(4 * num); + gdev->gd_notify_types = be32_to_cpup(p++); + for (i = 1; i < num; i++) { + if (be32_to_cpup(p++)) { + status = nfserr_inval; + goto out; + } + } + } + DECODE_TAIL; +} + +static __be32 +nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, + struct nfsd4_layoutget *lgp) +{ + DECODE_HEAD; + + READ_BUF(36); + lgp->lg_signal = be32_to_cpup(p++); + lgp->lg_layout_type = be32_to_cpup(p++); + lgp->lg_seg.iomode = be32_to_cpup(p++); + p = xdr_decode_hyper(p, &lgp->lg_seg.offset); + p = xdr_decode_hyper(p, &lgp->lg_seg.length); + p = xdr_decode_hyper(p, &lgp->lg_minlength); + nfsd4_decode_stateid(argp, &lgp->lg_sid); + READ_BUF(4); + lgp->lg_maxcount = be32_to_cpup(p++); + + DECODE_TAIL; +} + +static __be32 +nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, + struct nfsd4_layoutcommit *lcp) +{ + DECODE_HEAD; + u32 timechange; + + READ_BUF(20); + p = xdr_decode_hyper(p, &lcp->lc_seg.offset); + p = xdr_decode_hyper(p, &lcp->lc_seg.length); + lcp->lc_reclaim = be32_to_cpup(p++); + nfsd4_decode_stateid(argp, &lcp->lc_sid); + READ_BUF(4); + lcp->lc_newoffset = be32_to_cpup(p++); + if (lcp->lc_newoffset) { + READ_BUF(8); + p = xdr_decode_hyper(p, &lcp->lc_last_wr); + } else + lcp->lc_last_wr = 0; + READ_BUF(4); + timechange = be32_to_cpup(p++); + if (timechange) { + status = nfsd4_decode_time(argp, &lcp->lc_mtime); + if (status) + return status; + } else { + lcp->lc_mtime.tv_nsec = UTIME_NOW; + } + READ_BUF(8); + lcp->lc_layout_type = be32_to_cpup(p++); + + /* + * Save the layout update in XDR format and let the layout driver deal + * with it later. + */ + lcp->lc_up_len = be32_to_cpup(p++); + if (lcp->lc_up_len > 0) { + READ_BUF(lcp->lc_up_len); + READMEM(lcp->lc_up_layout, lcp->lc_up_len); + } + + DECODE_TAIL; +} + +static __be32 +nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, + struct nfsd4_layoutreturn *lrp) +{ + DECODE_HEAD; + + READ_BUF(16); + lrp->lr_reclaim = be32_to_cpup(p++); + lrp->lr_layout_type = be32_to_cpup(p++); + lrp->lr_seg.iomode = be32_to_cpup(p++); + lrp->lr_return_type = be32_to_cpup(p++); + if (lrp->lr_return_type == RETURN_FILE) { + READ_BUF(16); + p = xdr_decode_hyper(p, &lrp->lr_seg.offset); + p = xdr_decode_hyper(p, &lrp->lr_seg.length); + nfsd4_decode_stateid(argp, &lrp->lr_sid); + READ_BUF(4); + lrp->lrf_body_len = be32_to_cpup(p++); + if (lrp->lrf_body_len > 0) { + READ_BUF(lrp->lrf_body_len); + READMEM(lrp->lrf_body, lrp->lrf_body_len); + } + } else { + lrp->lr_seg.offset = 0; + lrp->lr_seg.length = NFS4_MAX_UINT64; + } + + DECODE_TAIL; +} +#endif /* CONFIG_NFSD_PNFS */ + static __be32 nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, struct nfsd4_fallocate *fallocate) @@ -1607,11 +1738,19 @@ static nfsd4_dec nfsd4_dec_ops[] = { [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, +#ifdef CONFIG_NFSD_PNFS + [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, + [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, + [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, + [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, +#else [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, +#endif [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, @@ -2539,6 +2678,30 @@ out_acl: get_parent_attributes(exp, &stat); p = xdr_encode_hyper(p, stat.ino); } +#ifdef CONFIG_NFSD_PNFS + if ((bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) || + (bmval2 & FATTR4_WORD2_LAYOUT_TYPES)) { + if (exp->ex_layout_type) { + p = xdr_reserve_space(xdr, 8); + if (!p) + goto out_resource; + *p++ = cpu_to_be32(1); + *p++ = cpu_to_be32(exp->ex_layout_type); + } else { + p = xdr_reserve_space(xdr, 4); + if (!p) + goto out_resource; + *p++ = cpu_to_be32(0); + } + } + + if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { + p = xdr_reserve_space(xdr, 4); + if (!p) + goto out_resource; + *p++ = cpu_to_be32(stat.blksize); + } +#endif /* CONFIG_NFSD_PNFS */ if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { status = nfsd4_encode_security_label(xdr, rqstp, context, contextlen); @@ -2768,16 +2931,17 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, if (entry_bytes > cd->rd_maxcount) goto fail; cd->rd_maxcount -= entry_bytes; - if (!cd->rd_dircount) - goto fail; /* * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so * let's always let through the first entry, at least: */ - name_and_cookie = 4 * XDR_QUADLEN(namlen) + 8; + if (!cd->rd_dircount) + goto fail; + name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) goto fail; cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); + cd->cookie_offset = cookie_offset; skip_entry: cd->common.err = nfs_ok; @@ -3814,6 +3978,156 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, return nfserr; } +#ifdef CONFIG_NFSD_PNFS +static __be32 +nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_getdeviceinfo *gdev) +{ + struct xdr_stream *xdr = &resp->xdr; + const struct nfsd4_layout_ops *ops = + nfsd4_layout_ops[gdev->gd_layout_type]; + u32 starting_len = xdr->buf->len, needed_len; + __be32 *p; + + dprintk("%s: err %d\n", __func__, nfserr); + if (nfserr) + goto out; + + nfserr = nfserr_resource; + p = xdr_reserve_space(xdr, 4); + if (!p) + goto out; + + *p++ = cpu_to_be32(gdev->gd_layout_type); + + /* If maxcount is 0 then just update notifications */ + if (gdev->gd_maxcount != 0) { + nfserr = ops->encode_getdeviceinfo(xdr, gdev); + if (nfserr) { + /* + * We don't bother to burden the layout drivers with + * enforcing gd_maxcount, just tell the client to + * come back with a bigger buffer if it's not enough. + */ + if (xdr->buf->len + 4 > gdev->gd_maxcount) + goto toosmall; + goto out; + } + } + + nfserr = nfserr_resource; + if (gdev->gd_notify_types) { + p = xdr_reserve_space(xdr, 4 + 4); + if (!p) + goto out; + *p++ = cpu_to_be32(1); /* bitmap length */ + *p++ = cpu_to_be32(gdev->gd_notify_types); + } else { + p = xdr_reserve_space(xdr, 4); + if (!p) + goto out; + *p++ = 0; + } + + nfserr = 0; +out: + kfree(gdev->gd_device); + dprintk("%s: done: %d\n", __func__, be32_to_cpu(nfserr)); + return nfserr; + +toosmall: + dprintk("%s: maxcount too small\n", __func__); + needed_len = xdr->buf->len + 4 /* notifications */; + xdr_truncate_encode(xdr, starting_len); + p = xdr_reserve_space(xdr, 4); + if (!p) { + nfserr = nfserr_resource; + } else { + *p++ = cpu_to_be32(needed_len); + nfserr = nfserr_toosmall; + } + goto out; +} + +static __be32 +nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_layoutget *lgp) +{ + struct xdr_stream *xdr = &resp->xdr; + const struct nfsd4_layout_ops *ops = + nfsd4_layout_ops[lgp->lg_layout_type]; + __be32 *p; + + dprintk("%s: err %d\n", __func__, nfserr); + if (nfserr) + goto out; + + nfserr = nfserr_resource; + p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); + if (!p) + goto out; + + *p++ = cpu_to_be32(1); /* we always set return-on-close */ + *p++ = cpu_to_be32(lgp->lg_sid.si_generation); + p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, + sizeof(stateid_opaque_t)); + + *p++ = cpu_to_be32(1); /* we always return a single layout */ + p = xdr_encode_hyper(p, lgp->lg_seg.offset); + p = xdr_encode_hyper(p, lgp->lg_seg.length); + *p++ = cpu_to_be32(lgp->lg_seg.iomode); + *p++ = cpu_to_be32(lgp->lg_layout_type); + + nfserr = ops->encode_layoutget(xdr, lgp); +out: + kfree(lgp->lg_content); + return nfserr; +} + +static __be32 +nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_layoutcommit *lcp) +{ + struct xdr_stream *xdr = &resp->xdr; + __be32 *p; + + if (nfserr) + return nfserr; + + p = xdr_reserve_space(xdr, 4); + if (!p) + return nfserr_resource; + *p++ = cpu_to_be32(lcp->lc_size_chg); + if (lcp->lc_size_chg) { + p = xdr_reserve_space(xdr, 8); + if (!p) + return nfserr_resource; + p = xdr_encode_hyper(p, lcp->lc_newsize); + } + + return nfs_ok; +} + +static __be32 +nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_layoutreturn *lrp) +{ + struct xdr_stream *xdr = &resp->xdr; + __be32 *p; + + if (nfserr) + return nfserr; + + p = xdr_reserve_space(xdr, 4); + if (!p) + return nfserr_resource; + *p++ = cpu_to_be32(lrp->lrs_present); + if (lrp->lrs_present) + nfsd4_encode_stateid(xdr, &lrp->lr_sid); + return nfs_ok; +} +#endif /* CONFIG_NFSD_PNFS */ + static __be32 nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_seek *seek) @@ -3890,11 +4204,19 @@ static nfsd4_enc nfsd4_enc_ops[] = { [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, +#ifdef CONFIG_NFSD_PNFS + [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, + [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, + [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, + [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, + [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, +#else [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, +#endif [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 19ace74..aa47d75 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -21,6 +21,7 @@ #include "cache.h" #include "state.h" #include "netns.h" +#include "pnfs.h" /* * We have a single directory with several nodes in it. @@ -1258,9 +1259,12 @@ static int __init init_nfsd(void) retval = nfsd4_init_slabs(); if (retval) goto out_unregister_pernet; - retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ + retval = nfsd4_init_pnfs(); if (retval) goto out_free_slabs; + retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ + if (retval) + goto out_exit_pnfs; nfsd_stat_init(); /* Statistics */ retval = nfsd_reply_cache_init(); if (retval) @@ -1282,6 +1286,8 @@ out_free_lockd: out_free_stat: nfsd_stat_shutdown(); nfsd_fault_inject_cleanup(); +out_exit_pnfs: + nfsd4_exit_pnfs(); out_free_slabs: nfsd4_free_slabs(); out_unregister_pernet: @@ -1299,6 +1305,7 @@ static void __exit exit_nfsd(void) nfsd_stat_shutdown(); nfsd_lockd_shutdown(); nfsd4_free_slabs(); + nfsd4_exit_pnfs(); nfsd_fault_inject_cleanup(); unregister_filesystem(&nfsd_fs_type); unregister_pernet_subsys(&nfsd_net_ops); diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 33a46a8..565c4da 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -325,15 +325,27 @@ void nfsd_lockd_shutdown(void); #define NFSD4_SUPPORTED_ATTRS_WORD2 0 +/* 4.1 */ +#ifdef CONFIG_NFSD_PNFS +#define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES +#define PNFSD_SUPPORTED_ATTRS_WORD2 \ +(FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) +#else +#define PNFSD_SUPPORTED_ATTRS_WORD1 0 +#define PNFSD_SUPPORTED_ATTRS_WORD2 0 +#endif /* CONFIG_NFSD_PNFS */ + #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ NFSD4_SUPPORTED_ATTRS_WORD0 #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ - NFSD4_SUPPORTED_ATTRS_WORD1 + (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ - (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT) + (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ + FATTR4_WORD2_SUPPATTR_EXCLCREAT) +/* 4.2 */ #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL #else diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index 08236d7..84cae20 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -187,6 +187,24 @@ fh_init(struct svc_fh *fhp, int maxsize) return fhp; } +static inline bool fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2) +{ + if (fh1->fh_size != fh2->fh_size) + return false; + if (memcmp(fh1->fh_base.fh_pad, fh2->fh_base.fh_pad, fh1->fh_size) != 0) + return false; + return true; +} + +static inline bool fh_fsid_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2) +{ + if (fh1->fh_fsid_type != fh2->fh_fsid_type) + return false; + if (memcmp(fh1->fh_fsid, fh2->fh_fsid, key_len(fh1->fh_fsid_type) != 0)) + return false; + return true; +} + #ifdef CONFIG_NFSD_V3 /* * The wcc data stored in current_fh should be cleared diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 314f5c8..9277cc9 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -119,6 +119,7 @@ struct svc_program nfsd_program = { static bool nfsd_supported_minorversions[NFSD_SUPPORTED_MINOR_VERSION + 1] = { [0] = 1, [1] = 1, + [2] = 1, }; int nfsd_vers(int vers, enum vers_op change) diff --git a/fs/nfsd/pnfs.h b/fs/nfsd/pnfs.h new file mode 100644 index 0000000..fedb4d6 --- /dev/null +++ b/fs/nfsd/pnfs.h @@ -0,0 +1,81 @@ +#ifndef _FS_NFSD_PNFS_H +#define _FS_NFSD_PNFS_H 1 + +#include <linux/exportfs.h> +#include <linux/nfsd/export.h> + +#include "state.h" +#include "xdr4.h" + +struct xdr_stream; + +struct nfsd4_deviceid_map { + struct list_head hash; + u64 idx; + int fsid_type; + u32 fsid[]; +}; + +struct nfsd4_layout_ops { + u32 notify_types; + + __be32 (*proc_getdeviceinfo)(struct super_block *sb, + struct nfsd4_getdeviceinfo *gdevp); + __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr, + struct nfsd4_getdeviceinfo *gdevp); + + __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp, + struct nfsd4_layoutget *lgp); + __be32 (*encode_layoutget)(struct xdr_stream *, + struct nfsd4_layoutget *lgp); + + __be32 (*proc_layoutcommit)(struct inode *inode, + struct nfsd4_layoutcommit *lcp); +}; + +extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; +extern const struct nfsd4_layout_ops bl_layout_ops; + +__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, stateid_t *stateid, + bool create, u32 layout_type, struct nfs4_layout_stateid **lsp); +__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp, + struct nfs4_layout_stateid *ls); +__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutreturn *lrp); +__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp, + struct nfsd4_compound_state *cstate, + struct nfsd4_layoutreturn *lrp); +int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, + u32 device_generation); +struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx); + +#ifdef CONFIG_NFSD_PNFS +void nfsd4_setup_layout_type(struct svc_export *exp); +void nfsd4_return_all_client_layouts(struct nfs4_client *); +void nfsd4_return_all_file_layouts(struct nfs4_client *clp, + struct nfs4_file *fp); +int nfsd4_init_pnfs(void); +void nfsd4_exit_pnfs(void); +#else +static inline void nfsd4_setup_layout_type(struct svc_export *exp) +{ +} + +static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) +{ +} +static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, + struct nfs4_file *fp) +{ +} +static inline void nfsd4_exit_pnfs(void) +{ +} +static inline int nfsd4_init_pnfs(void) +{ + return 0; +} +#endif /* CONFIG_NFSD_PNFS */ +#endif /* _FS_NFSD_PNFS_H */ diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 9d3be37..4f3bfeb 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -92,6 +92,7 @@ struct nfs4_stid { /* For a deleg stateid kept around only to process free_stateid's: */ #define NFS4_REVOKED_DELEG_STID 16 #define NFS4_CLOSED_DELEG_STID 32 +#define NFS4_LAYOUT_STID 64 unsigned char sc_type; stateid_t sc_stateid; struct nfs4_client *sc_client; @@ -297,6 +298,9 @@ struct nfs4_client { struct list_head cl_delegations; struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ struct list_head cl_lru; /* tail queue */ +#ifdef CONFIG_NFSD_PNFS + struct list_head cl_lo_states; /* outstanding layout states */ +#endif struct xdr_netobj cl_name; /* id generated by client */ nfs4_verifier cl_verifier; /* generated by client */ time_t cl_time; /* time of last lease renewal */ @@ -493,9 +497,13 @@ struct nfs4_file { atomic_t fi_access[2]; u32 fi_share_deny; struct file *fi_deleg_file; - atomic_t fi_delegees; + int fi_delegees; struct knfsd_fh fi_fhandle; bool fi_had_conflict; +#ifdef CONFIG_NFSD_PNFS + struct list_head fi_lo_states; + atomic_t fi_lo_recalls; +#endif }; /* @@ -528,6 +536,24 @@ static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) return container_of(s, struct nfs4_ol_stateid, st_stid); } +struct nfs4_layout_stateid { + struct nfs4_stid ls_stid; + struct list_head ls_perclnt; + struct list_head ls_perfile; + spinlock_t ls_lock; + struct list_head ls_layouts; + u32 ls_layout_type; + struct file *ls_file; + struct nfsd4_callback ls_recall; + stateid_t ls_recall_sid; + bool ls_recalled; +}; + +static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s) +{ + return container_of(s, struct nfs4_layout_stateid, ls_stid); +} + /* flags for preprocess_seqid_op() */ #define RD_STATE 0x00000010 #define WR_STATE 0x00000020 @@ -535,6 +561,7 @@ static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) enum nfsd4_cb_op { NFSPROC4_CLNT_CB_NULL = 0, NFSPROC4_CLNT_CB_RECALL, + NFSPROC4_CLNT_CB_LAYOUT, NFSPROC4_CLNT_CB_SEQUENCE, }; @@ -545,6 +572,12 @@ struct nfsd_net; extern __be32 nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate, stateid_t *stateid, int flags, struct file **filp); +__be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, + stateid_t *stateid, unsigned char typemask, + struct nfs4_stid **s, struct nfsd_net *nn); +struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, + struct kmem_cache *slab); +void nfs4_unhash_stid(struct nfs4_stid *s); void nfs4_put_stid(struct nfs4_stid *s); void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); extern void nfs4_release_reclaim(struct nfsd_net *); @@ -567,6 +600,14 @@ extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name, struct nfsd_net *nn); extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn); +struct nfs4_file *find_file(struct knfsd_fh *fh); +void put_nfs4_file(struct nfs4_file *fi); +static inline void get_nfs4_file(struct nfs4_file *fi) +{ + atomic_inc(&fi->fi_ref); +} +struct file *find_any_file(struct nfs4_file *f); + /* grace period management */ void nfsd4_end_grace(struct nfsd_net *nn); diff --git a/fs/nfsd/trace.c b/fs/nfsd/trace.c new file mode 100644 index 0000000..82f8907 --- /dev/null +++ b/fs/nfsd/trace.c @@ -0,0 +1,5 @@ + +#include "state.h" + +#define CREATE_TRACE_POINTS +#include "trace.h" diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h new file mode 100644 index 0000000..c668520 --- /dev/null +++ b/fs/nfsd/trace.h @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM nfsd + +#if !defined(_NFSD_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _NFSD_TRACE_H + +#include <linux/tracepoint.h> + +DECLARE_EVENT_CLASS(nfsd_stateid_class, + TP_PROTO(stateid_t *stp), + TP_ARGS(stp), + TP_STRUCT__entry( + __field(u32, cl_boot) + __field(u32, cl_id) + __field(u32, si_id) + __field(u32, si_generation) + ), + TP_fast_assign( + __entry->cl_boot = stp->si_opaque.so_clid.cl_boot; + __entry->cl_id = stp->si_opaque.so_clid.cl_id; + __entry->si_id = stp->si_opaque.so_id; + __entry->si_generation = stp->si_generation; + ), + TP_printk("client %08x:%08x stateid %08x:%08x", + __entry->cl_boot, + __entry->cl_id, + __entry->si_id, + __entry->si_generation) +) + +#define DEFINE_STATEID_EVENT(name) \ +DEFINE_EVENT(nfsd_stateid_class, name, \ + TP_PROTO(stateid_t *stp), \ + TP_ARGS(stp)) +DEFINE_STATEID_EVENT(layoutstate_alloc); +DEFINE_STATEID_EVENT(layoutstate_unhash); +DEFINE_STATEID_EVENT(layoutstate_free); +DEFINE_STATEID_EVENT(layout_get_lookup_fail); +DEFINE_STATEID_EVENT(layout_commit_lookup_fail); +DEFINE_STATEID_EVENT(layout_return_lookup_fail); +DEFINE_STATEID_EVENT(layout_recall); +DEFINE_STATEID_EVENT(layout_recall_done); +DEFINE_STATEID_EVENT(layout_recall_fail); +DEFINE_STATEID_EVENT(layout_recall_release); + +#endif /* _NFSD_TRACE_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#define TRACE_INCLUDE_FILE trace +#include <trace/define_trace.h> diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 90a5925..0bda93e 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -428,6 +428,61 @@ struct nfsd4_reclaim_complete { u32 rca_one_fs; }; +struct nfsd4_deviceid { + u64 fsid_idx; + u32 generation; + u32 pad; +}; + +struct nfsd4_layout_seg { + u32 iomode; + u64 offset; + u64 length; +}; + +struct nfsd4_getdeviceinfo { + struct nfsd4_deviceid gd_devid; /* request */ + u32 gd_layout_type; /* request */ + u32 gd_maxcount; /* request */ + u32 gd_notify_types;/* request - response */ + void *gd_device; /* response */ +}; + +struct nfsd4_layoutget { + u64 lg_minlength; /* request */ + u32 lg_signal; /* request */ + u32 lg_layout_type; /* request */ + u32 lg_maxcount; /* request */ + stateid_t lg_sid; /* request/response */ + struct nfsd4_layout_seg lg_seg; /* request/response */ + void *lg_content; /* response */ +}; + +struct nfsd4_layoutcommit { + stateid_t lc_sid; /* request */ + struct nfsd4_layout_seg lc_seg; /* request */ + u32 lc_reclaim; /* request */ + u32 lc_newoffset; /* request */ + u64 lc_last_wr; /* request */ + struct timespec lc_mtime; /* request */ + u32 lc_layout_type; /* request */ + u32 lc_up_len; /* layout length */ + void *lc_up_layout; /* decoded by callback */ + u32 lc_size_chg; /* boolean for response */ + u64 lc_newsize; /* response */ +}; + +struct nfsd4_layoutreturn { + u32 lr_return_type; /* request */ + u32 lr_layout_type; /* request */ + struct nfsd4_layout_seg lr_seg; /* request */ + u32 lr_reclaim; /* request */ + u32 lrf_body_len; /* request */ + void *lrf_body; /* request */ + stateid_t lr_sid; /* request/response */ + u32 lrs_present; /* response */ +}; + struct nfsd4_fallocate { /* request */ stateid_t falloc_stateid; @@ -491,6 +546,10 @@ struct nfsd4_op { struct nfsd4_reclaim_complete reclaim_complete; struct nfsd4_test_stateid test_stateid; struct nfsd4_free_stateid free_stateid; + struct nfsd4_getdeviceinfo getdeviceinfo; + struct nfsd4_layoutget layoutget; + struct nfsd4_layoutcommit layoutcommit; + struct nfsd4_layoutreturn layoutreturn; /* NFSv4.2 */ struct nfsd4_fallocate allocate; diff --git a/fs/nfsd/xdr4cb.h b/fs/nfsd/xdr4cb.h index c5c55df..c47f6fd 100644 --- a/fs/nfsd/xdr4cb.h +++ b/fs/nfsd/xdr4cb.h @@ -21,3 +21,10 @@ #define NFS4_dec_cb_recall_sz (cb_compound_dec_hdr_sz + \ cb_sequence_dec_sz + \ op_dec_sz) +#define NFS4_enc_cb_layout_sz (cb_compound_enc_hdr_sz + \ + cb_sequence_enc_sz + \ + 1 + 3 + \ + enc_nfs4_fh_sz + 4) +#define NFS4_dec_cb_layout_sz (cb_compound_dec_hdr_sz + \ + cb_sequence_dec_sz + \ + op_dec_sz) diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index 3a03e0a..a8c728ac 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -128,7 +128,6 @@ static const struct vm_operations_struct nilfs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = nilfs_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int nilfs_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index 91093cd..3857040 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -141,7 +141,6 @@ enum { * @ti_save: Backup of journal_info field of task_struct * @ti_flags: Flags * @ti_count: Nest level - * @ti_garbage: List of inode to be put when releasing semaphore */ struct nilfs_transaction_info { u32 ti_magic; @@ -150,7 +149,6 @@ struct nilfs_transaction_info { one of other filesystems has a bug. */ unsigned short ti_flags; unsigned short ti_count; - struct list_head ti_garbage; }; /* ti_magic */ diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 7ef18fc..469086b 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -305,7 +305,6 @@ static void nilfs_transaction_lock(struct super_block *sb, ti->ti_count = 0; ti->ti_save = cur_ti; ti->ti_magic = NILFS_TI_MAGIC; - INIT_LIST_HEAD(&ti->ti_garbage); current->journal_info = ti; for (;;) { @@ -332,8 +331,6 @@ static void nilfs_transaction_unlock(struct super_block *sb) up_write(&nilfs->ns_segctor_sem); current->journal_info = ti->ti_save; - if (!list_empty(&ti->ti_garbage)) - nilfs_dispose_list(nilfs, &ti->ti_garbage, 0); } static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci, @@ -746,6 +743,15 @@ static void nilfs_dispose_list(struct the_nilfs *nilfs, } } +static void nilfs_iput_work_func(struct work_struct *work) +{ + struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, + sc_iput_work); + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; + + nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); +} + static int nilfs_test_metadata_dirty(struct the_nilfs *nilfs, struct nilfs_root *root) { @@ -1900,8 +1906,8 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, struct the_nilfs *nilfs) { - struct nilfs_transaction_info *ti = current->journal_info; struct nilfs_inode_info *ii, *n; + int defer_iput = false; spin_lock(&nilfs->ns_inode_lock); list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { @@ -1912,9 +1918,24 @@ static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, clear_bit(NILFS_I_BUSY, &ii->i_state); brelse(ii->i_bh); ii->i_bh = NULL; - list_move_tail(&ii->i_dirty, &ti->ti_garbage); + list_del_init(&ii->i_dirty); + if (!ii->vfs_inode.i_nlink) { + /* + * Defer calling iput() to avoid a deadlock + * over I_SYNC flag for inodes with i_nlink == 0 + */ + list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); + defer_iput = true; + } else { + spin_unlock(&nilfs->ns_inode_lock); + iput(&ii->vfs_inode); + spin_lock(&nilfs->ns_inode_lock); + } } spin_unlock(&nilfs->ns_inode_lock); + + if (defer_iput) + schedule_work(&sci->sc_iput_work); } /* @@ -2583,6 +2604,8 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb, INIT_LIST_HEAD(&sci->sc_segbufs); INIT_LIST_HEAD(&sci->sc_write_logs); INIT_LIST_HEAD(&sci->sc_gc_inodes); + INIT_LIST_HEAD(&sci->sc_iput_queue); + INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); init_timer(&sci->sc_timer); sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; @@ -2609,6 +2632,8 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) ret = nilfs_segctor_construct(sci, SC_LSEG_SR); nilfs_transaction_unlock(sci->sc_super); + flush_work(&sci->sc_iput_work); + } while (ret && retrycount-- > 0); } @@ -2633,6 +2658,9 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) || sci->sc_seq_request != sci->sc_seq_done); spin_unlock(&sci->sc_state_lock); + if (flush_work(&sci->sc_iput_work)) + flag = true; + if (flag || !nilfs_segctor_confirm(sci)) nilfs_segctor_write_out(sci); @@ -2642,6 +2670,12 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); } + if (!list_empty(&sci->sc_iput_queue)) { + nilfs_warning(sci->sc_super, __func__, + "iput queue is not empty\n"); + nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); + } + WARN_ON(!list_empty(&sci->sc_segbufs)); WARN_ON(!list_empty(&sci->sc_write_logs)); diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h index 38a1d00..a48d6de 100644 --- a/fs/nilfs2/segment.h +++ b/fs/nilfs2/segment.h @@ -26,6 +26,7 @@ #include <linux/types.h> #include <linux/fs.h> #include <linux/buffer_head.h> +#include <linux/workqueue.h> #include <linux/nilfs2_fs.h> #include "nilfs.h" @@ -92,6 +93,8 @@ struct nilfs_segsum_pointer { * @sc_nblk_inc: Block count of current generation * @sc_dirty_files: List of files to be written * @sc_gc_inodes: List of GC inodes having blocks to be written + * @sc_iput_queue: list of inodes for which iput should be done + * @sc_iput_work: work struct to defer iput call * @sc_freesegs: array of segment numbers to be freed * @sc_nfreesegs: number of segments on @sc_freesegs * @sc_dsync_inode: inode whose data pages are written for a sync operation @@ -135,6 +138,8 @@ struct nilfs_sc_info { struct list_head sc_dirty_files; struct list_head sc_gc_inodes; + struct list_head sc_iput_queue; + struct work_struct sc_iput_work; __u64 *sc_freesegs; size_t sc_nfreesegs; diff --git a/fs/notify/Kconfig b/fs/notify/Kconfig index 22c629e..2a24249 100644 --- a/fs/notify/Kconfig +++ b/fs/notify/Kconfig @@ -1,5 +1,6 @@ config FSNOTIFY def_bool n + select SRCU source "fs/notify/dnotify/Kconfig" source "fs/notify/inotify/Kconfig" diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index 30d3add..51ceb81 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -140,7 +140,7 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark, } if (S_ISDIR(path->dentry->d_inode->i_mode) && - (marks_ignored_mask & FS_ISDIR)) + !(marks_mask & FS_ISDIR & ~marks_ignored_mask)) return false; if (event_mask & marks_mask & ~marks_ignored_mask) diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index bff8567..cf27550 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -487,20 +487,27 @@ static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, unsigned int flags, int *destroy) { - __u32 oldmask; + __u32 oldmask = 0; spin_lock(&fsn_mark->lock); if (!(flags & FAN_MARK_IGNORED_MASK)) { + __u32 tmask = fsn_mark->mask & ~mask; + + if (flags & FAN_MARK_ONDIR) + tmask &= ~FAN_ONDIR; + oldmask = fsn_mark->mask; - fsnotify_set_mark_mask_locked(fsn_mark, (oldmask & ~mask)); + fsnotify_set_mark_mask_locked(fsn_mark, tmask); } else { - oldmask = fsn_mark->ignored_mask; - fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask & ~mask)); + __u32 tmask = fsn_mark->ignored_mask & ~mask; + if (flags & FAN_MARK_ONDIR) + tmask &= ~FAN_ONDIR; + + fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask); } + *destroy = !(fsn_mark->mask | fsn_mark->ignored_mask); spin_unlock(&fsn_mark->lock); - *destroy = !(oldmask & ~mask); - return mask & oldmask; } @@ -569,20 +576,22 @@ static __u32 fanotify_mark_add_to_mask(struct fsnotify_mark *fsn_mark, spin_lock(&fsn_mark->lock); if (!(flags & FAN_MARK_IGNORED_MASK)) { + __u32 tmask = fsn_mark->mask | mask; + + if (flags & FAN_MARK_ONDIR) + tmask |= FAN_ONDIR; + oldmask = fsn_mark->mask; - fsnotify_set_mark_mask_locked(fsn_mark, (oldmask | mask)); + fsnotify_set_mark_mask_locked(fsn_mark, tmask); } else { __u32 tmask = fsn_mark->ignored_mask | mask; + if (flags & FAN_MARK_ONDIR) + tmask |= FAN_ONDIR; + fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask); if (flags & FAN_MARK_IGNORED_SURV_MODIFY) fsn_mark->flags |= FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY; } - - if (!(flags & FAN_MARK_ONDIR)) { - __u32 tmask = fsn_mark->ignored_mask | FAN_ONDIR; - fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask); - } - spin_unlock(&fsn_mark->lock); return mask & ~oldmask; diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 7e8282d..c58a1bc 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -245,16 +245,14 @@ int ocfs2_set_acl(handle_t *handle, ret = posix_acl_equiv_mode(acl, &mode); if (ret < 0) return ret; - else { - if (ret == 0) - acl = NULL; - ret = ocfs2_acl_set_mode(inode, di_bh, - handle, mode); - if (ret) - return ret; + if (ret == 0) + acl = NULL; - } + ret = ocfs2_acl_set_mode(inode, di_bh, + handle, mode); + if (ret) + return ret; } break; case ACL_TYPE_DEFAULT: diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index fcae9ef..044158b 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -6873,7 +6873,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, if (IS_ERR(handle)) { ret = PTR_ERR(handle); mlog_errno(ret); - goto out_unlock; + goto out; } ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, @@ -6931,7 +6931,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, if (ret) { mlog_errno(ret); need_free = 1; - goto out_commit; + goto out_unlock; } page_end = PAGE_CACHE_SIZE; @@ -6964,12 +6964,16 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, if (ret) { mlog_errno(ret); need_free = 1; - goto out_commit; + goto out_unlock; } inode->i_blocks = ocfs2_inode_sector_count(inode); } +out_unlock: + if (pages) + ocfs2_unlock_and_free_pages(pages, num_pages); + out_commit: if (ret < 0 && did_quota) dquot_free_space_nodirty(inode, @@ -6989,15 +6993,11 @@ out_commit: ocfs2_commit_trans(osb, handle); -out_unlock: +out: if (data_ac) ocfs2_free_alloc_context(data_ac); - -out: - if (pages) { - ocfs2_unlock_and_free_pages(pages, num_pages); + if (pages) kfree(pages); - } return ret; } diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 2e355e0..56c403a 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1016,7 +1016,8 @@ void o2net_fill_node_map(unsigned long *map, unsigned bytes) memset(map, 0, bytes); for (node = 0; node < O2NM_MAX_NODES; ++node) { - o2net_tx_can_proceed(o2net_nn_from_num(node), &sc, &ret); + if (!o2net_tx_can_proceed(o2net_nn_from_num(node), &sc, &ret)) + continue; if (!ret) { set_bit(node, map); sc_put(sc); diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h index dc024367..b95e7df 100644 --- a/fs/ocfs2/cluster/tcp_internal.h +++ b/fs/ocfs2/cluster/tcp_internal.h @@ -107,12 +107,12 @@ struct o2net_node { struct list_head nn_status_list; /* connects are attempted from when heartbeat comes up until either hb - * goes down, the node is unconfigured, no connect attempts succeed - * before O2NET_CONN_IDLE_DELAY, or a connect succeeds. connect_work - * is queued from set_nn_state both from hb up and from itself if a - * connect attempt fails and so can be self-arming. shutdown is - * careful to first mark the nn such that no connects will be attempted - * before canceling delayed connect work and flushing the queue. */ + * goes down, the node is unconfigured, or a connect succeeds. + * connect_work is queued from set_nn_state both from hb up and from + * itself if a connect attempt fails and so can be self-arming. + * shutdown is careful to first mark the nn such that no connects will + * be attempted before canceling delayed connect work and flushing the + * queue. */ struct delayed_work nn_connect_work; unsigned long nn_last_connect_attempt; diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 319e786..b08050b 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -3456,10 +3456,8 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name, int blocksize = dir->i_sb->s_blocksize; status = ocfs2_read_dir_block(dir, 0, &bh, 0); - if (status) { - mlog_errno(status); + if (status) goto bail; - } rec_len = OCFS2_DIR_REC_LEN(namelen); offset = 0; @@ -3480,10 +3478,9 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name, status = ocfs2_read_dir_block(dir, offset >> sb->s_blocksize_bits, &bh, 0); - if (status) { - mlog_errno(status); + if (status) goto bail; - } + /* move to next block */ de = (struct ocfs2_dir_entry *) bh->b_data; } @@ -3513,7 +3510,6 @@ next: de = (struct ocfs2_dir_entry *)((char *) de + le16_to_cpu(de->rec_len)); } - status = 0; bail: brelse(bh); if (status) diff --git a/fs/ocfs2/dlm/dlmast.c b/fs/ocfs2/dlm/dlmast.c index b46278f..fd6bbbb 100644 --- a/fs/ocfs2/dlm/dlmast.c +++ b/fs/ocfs2/dlm/dlmast.c @@ -385,8 +385,12 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data, head = &res->granted; list_for_each_entry(lock, head, list) { - if (lock->ml.cookie == cookie) + /* if lock is found but unlock is pending ignore the bast */ + if (lock->ml.cookie == cookie) { + if (lock->unlock_pending) + break; goto do_ast; + } } mlog(0, "Got %sast for unknown lock! cookie=%u:%llu, name=%.*s, " diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index 149eb55..8251360 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -406,7 +406,7 @@ static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len) } spin_unlock(&dlm->spinlock); - out += snprintf(buf + out, len - out, "Total on list: %ld\n", total); + out += snprintf(buf + out, len - out, "Total on list: %lu\n", total); return out; } @@ -464,7 +464,7 @@ static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len) spin_unlock(&dlm->master_lock); out += snprintf(buf + out, len - out, - "Total: %ld, Longest: %ld\n", total, longest); + "Total: %lu, Longest: %lu\n", total, longest); return out; } diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 50a59d2..7df88a6 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -674,20 +674,6 @@ static void dlm_leave_domain(struct dlm_ctxt *dlm) spin_unlock(&dlm->spinlock); } -int dlm_joined(struct dlm_ctxt *dlm) -{ - int ret = 0; - - spin_lock(&dlm_domain_lock); - - if (dlm->dlm_state == DLM_CTXT_JOINED) - ret = 1; - - spin_unlock(&dlm_domain_lock); - - return ret; -} - int dlm_shutting_down(struct dlm_ctxt *dlm) { int ret = 0; diff --git a/fs/ocfs2/dlm/dlmdomain.h b/fs/ocfs2/dlm/dlmdomain.h index 2f7f60b..fd6122a 100644 --- a/fs/ocfs2/dlm/dlmdomain.h +++ b/fs/ocfs2/dlm/dlmdomain.h @@ -28,7 +28,6 @@ extern spinlock_t dlm_domain_lock; extern struct list_head dlm_domains; -int dlm_joined(struct dlm_ctxt *dlm); int dlm_shutting_down(struct dlm_ctxt *dlm); void dlm_fire_domain_eviction_callbacks(struct dlm_ctxt *dlm, int node_num); diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index cecd875..ce12e0b 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -1070,6 +1070,9 @@ static void dlm_move_reco_locks_to_list(struct dlm_ctxt *dlm, dead_node, dlm->name); list_del_init(&lock->list); dlm_lock_put(lock); + /* Can't schedule DLM_UNLOCK_FREE_LOCK + * - do manually */ + dlm_lock_put(lock); break; } } @@ -2346,6 +2349,10 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node) dead_node, dlm->name); list_del_init(&lock->list); dlm_lock_put(lock); + /* Can't schedule + * DLM_UNLOCK_FREE_LOCK + * - do manually */ + dlm_lock_put(lock); break; } } diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 1c423af..11849a4 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -3750,6 +3750,9 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres, break; spin_unlock(&dentry_attach_lock); + if (S_ISDIR(dl->dl_inode->i_mode)) + shrink_dcache_parent(dentry); + mlog(0, "d_delete(%pd);\n", dentry); /* diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index abe7d98..e0f04d5 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -569,7 +569,7 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start, handle_t *handle = NULL; struct ocfs2_alloc_context *data_ac = NULL; struct ocfs2_alloc_context *meta_ac = NULL; - enum ocfs2_alloc_restarted why; + enum ocfs2_alloc_restarted why = RESTART_NONE; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct ocfs2_extent_tree et; int did_quota = 0; diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 4f502382..d10860f 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1447,7 +1447,6 @@ bail: * requires that we call do_exit(). And it isn't exported, but * complete_and_exit() seems to be a minimal wrapper around it. */ complete_and_exit(NULL, status); - return status; } void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 10d66c7..9581d190 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -173,7 +173,6 @@ out: static const struct vm_operations_struct ocfs2_file_vm_ops = { .fault = ocfs2_fault, .page_mkwrite = ocfs2_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; int ocfs2_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 7d6b7d0..fdbcbfe 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -279,6 +279,8 @@ enum ocfs2_mount_options writes */ OCFS2_MOUNT_HB_NONE = 1 << 13, /* No heartbeat */ OCFS2_MOUNT_HB_GLOBAL = 1 << 14, /* Global heartbeat */ + + OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15, /* Journal Async Commit */ }; #define OCFS2_OSB_SOFT_RO 0x0001 diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h index 1eae330..b6d5133 100644 --- a/fs/ocfs2/quota.h +++ b/fs/ocfs2/quota.h @@ -48,6 +48,7 @@ struct ocfs2_quota_recovery { /* In-memory structure with quota header information */ struct ocfs2_mem_dqinfo { unsigned int dqi_type; /* Quota type this structure describes */ + unsigned int dqi_flags; /* Flags OLQF_* */ unsigned int dqi_chunks; /* Number of chunks in local quota file */ unsigned int dqi_blocks; /* Number of blocks allocated for local quota file */ unsigned int dqi_syncms; /* How often should we sync with other nodes */ diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c index 10b6539..3d0b63d 100644 --- a/fs/ocfs2/quota_local.c +++ b/fs/ocfs2/quota_local.c @@ -73,12 +73,6 @@ static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) ol_dqblk_block_off(sb, c, off); } -/* Compute block number from given offset */ -static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off) -{ - return off >> sb->s_blocksize_bits; -} - static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) { return off & ((1 << sb->s_blocksize_bits) - 1); @@ -292,7 +286,7 @@ static void olq_update_info(struct buffer_head *bh, void *private) ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + OCFS2_LOCAL_INFO_OFF); spin_lock(&dq_data_lock); - ldinfo->dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); + ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); spin_unlock(&dq_data_lock); @@ -701,8 +695,8 @@ static int ocfs2_local_read_info(struct super_block *sb, int type) /* We don't need the lock and we have to acquire quota file locks * which will later depend on this lock */ mutex_unlock(&sb_dqopt(sb)->dqio_mutex); - info->dqi_maxblimit = 0x7fffffffffffffffLL; - info->dqi_maxilimit = 0x7fffffffffffffffLL; + info->dqi_max_spc_limit = 0x7fffffffffffffffLL; + info->dqi_max_ino_limit = 0x7fffffffffffffffLL; oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); if (!oinfo) { mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" @@ -737,13 +731,13 @@ static int ocfs2_local_read_info(struct super_block *sb, int type) } ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + OCFS2_LOCAL_INFO_OFF); - info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); + oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); oinfo->dqi_libh = bh; /* We crashed when using local quota file? */ - if (!(info->dqi_flags & OLQF_CLEAN)) { + if (!(oinfo->dqi_flags & OLQF_CLEAN)) { rec = OCFS2_SB(sb)->quota_rec; if (!rec) { rec = ocfs2_alloc_quota_recovery(); @@ -772,7 +766,7 @@ static int ocfs2_local_read_info(struct super_block *sb, int type) } /* Now mark quota file as used */ - info->dqi_flags &= ~OLQF_CLEAN; + oinfo->dqi_flags &= ~OLQF_CLEAN; status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); if (status < 0) { mlog_errno(status); @@ -857,7 +851,7 @@ static int ocfs2_local_free_info(struct super_block *sb, int type) goto out; /* Mark local file as clean */ - info->dqi_flags |= OLQF_CLEAN; + oinfo->dqi_flags |= OLQF_CLEAN; status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], oinfo->dqi_libh, olq_update_info, diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index d81f6e2..ee541f9 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -2428,8 +2428,6 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb, get_bh(prev_bh); } - rb = (struct ocfs2_refcount_block *)ref_leaf_bh->b_data; - trace_ocfs2_calc_refcount_meta_credits_iterate( recs_add, (unsigned long long)cpos, clusters, (unsigned long long)le64_to_cpu(rec.r_cpos), diff --git a/fs/ocfs2/reservations.c b/fs/ocfs2/reservations.c index 41ffd36..6a348b0 100644 --- a/fs/ocfs2/reservations.c +++ b/fs/ocfs2/reservations.c @@ -39,7 +39,7 @@ #define OCFS2_CHECK_RESERVATIONS #endif -DEFINE_SPINLOCK(resv_lock); +static DEFINE_SPINLOCK(resv_lock); #define OCFS2_MIN_RESV_WINDOW_BITS 8 #define OCFS2_MAX_RESV_WINDOW_BITS 1024 diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 8372317..87a1f76 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -191,6 +191,7 @@ enum { Opt_coherency_full, Opt_resv_level, Opt_dir_resv_level, + Opt_journal_async_commit, Opt_err, }; @@ -222,6 +223,7 @@ static const match_table_t tokens = { {Opt_coherency_full, "coherency=full"}, {Opt_resv_level, "resv_level=%u"}, {Opt_dir_resv_level, "dir_resv_level=%u"}, + {Opt_journal_async_commit, "journal_async_commit"}, {Opt_err, NULL} }; @@ -1000,36 +1002,6 @@ static void ocfs2_disable_quotas(struct ocfs2_super *osb) } } -/* Handle quota on quotactl */ -static int ocfs2_quota_on(struct super_block *sb, int type, int format_id) -{ - unsigned int feature[OCFS2_MAXQUOTAS] = { - OCFS2_FEATURE_RO_COMPAT_USRQUOTA, - OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; - - if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) - return -EINVAL; - - return dquot_enable(sb_dqopt(sb)->files[type], type, - format_id, DQUOT_LIMITS_ENABLED); -} - -/* Handle quota off quotactl */ -static int ocfs2_quota_off(struct super_block *sb, int type) -{ - return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); -} - -static const struct quotactl_ops ocfs2_quotactl_ops = { - .quota_on_meta = ocfs2_quota_on, - .quota_off = ocfs2_quota_off, - .quota_sync = dquot_quota_sync, - .get_info = dquot_get_dqinfo, - .set_info = dquot_set_dqinfo, - .get_dqblk = dquot_get_dqblk, - .set_dqblk = dquot_set_dqblk, -}; - static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) { struct dentry *root; @@ -1500,6 +1472,9 @@ static int ocfs2_parse_options(struct super_block *sb, option < OCFS2_MAX_RESV_LEVEL) mopt->dir_resv_level = option; break; + case Opt_journal_async_commit: + mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT; + break; default: mlog(ML_ERROR, "Unrecognized mount option \"%s\" " @@ -1606,6 +1581,9 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root) if (osb->osb_dir_resv_level != osb->osb_resv_level) seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); + if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) + seq_printf(s, ",journal_async_commit"); + return 0; } @@ -2079,7 +2057,7 @@ static int ocfs2_initialize_super(struct super_block *sb, sb->s_op = &ocfs2_sops; sb->s_d_op = &ocfs2_dentry_ops; sb->s_export_op = &ocfs2_export_ops; - sb->s_qcop = &ocfs2_quotactl_ops; + sb->s_qcop = &dquot_quotactl_sysfile_ops; sb->dq_op = &ocfs2_quota_operations; sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; sb->s_xattr = ocfs2_xattr_handlers; @@ -2475,6 +2453,15 @@ static int ocfs2_check_volume(struct ocfs2_super *osb) goto finally; } + if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) + jbd2_journal_set_features(osb->journal->j_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + else + jbd2_journal_clear_features(osb->journal->j_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + if (dirty) { /* recover my local alloc if we didn't unmount cleanly. */ status = ocfs2_begin_local_alloc_recovery(osb, diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 662f8de..85b190d 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -5334,16 +5334,6 @@ out: return ret; } -static inline char *ocfs2_xattr_bucket_get_val(struct inode *inode, - struct ocfs2_xattr_bucket *bucket, - int offs) -{ - int block_off = offs >> inode->i_sb->s_blocksize_bits; - - offs = offs % inode->i_sb->s_blocksize; - return bucket_block(bucket, block_off) + offs; -} - /* * Truncate the specified xe_off entry in xattr bucket. * bucket is indicated by header_bh and len is the new length. diff --git a/fs/proc/page.c b/fs/proc/page.c index 1e3187d..7eee2d8 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -5,6 +5,7 @@ #include <linux/ksm.h> #include <linux/mm.h> #include <linux/mmzone.h> +#include <linux/huge_mm.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/hugetlb.h> @@ -121,9 +122,18 @@ u64 stable_page_flags(struct page *page) * just checks PG_head/PG_tail, so we need to check PageLRU/PageAnon * to make sure a given page is a thp, not a non-huge compound page. */ - else if (PageTransCompound(page) && (PageLRU(compound_head(page)) || - PageAnon(compound_head(page)))) - u |= 1 << KPF_THP; + else if (PageTransCompound(page)) { + struct page *head = compound_head(page); + + if (PageLRU(head) || PageAnon(head)) + u |= 1 << KPF_THP; + else if (is_huge_zero_page(head)) { + u |= 1 << KPF_ZERO_PAGE; + u |= 1 << KPF_THP; + } + } else if (is_zero_pfn(page_to_pfn(page))) + u |= 1 << KPF_ZERO_PAGE; + /* * Caveats on high order pages: page->_count will only be set diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 246eae8..0e36c1e 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -21,7 +21,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) { - unsigned long data, text, lib, swap; + unsigned long data, text, lib, swap, ptes, pmds; unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss; /* @@ -42,6 +42,8 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10; lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text; swap = get_mm_counter(mm, MM_SWAPENTS); + ptes = PTRS_PER_PTE * sizeof(pte_t) * atomic_long_read(&mm->nr_ptes); + pmds = PTRS_PER_PMD * sizeof(pmd_t) * mm_nr_pmds(mm); seq_printf(m, "VmPeak:\t%8lu kB\n" "VmSize:\t%8lu kB\n" @@ -54,6 +56,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) "VmExe:\t%8lu kB\n" "VmLib:\t%8lu kB\n" "VmPTE:\t%8lu kB\n" + "VmPMD:\t%8lu kB\n" "VmSwap:\t%8lu kB\n", hiwater_vm << (PAGE_SHIFT-10), total_vm << (PAGE_SHIFT-10), @@ -63,8 +66,8 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) total_rss << (PAGE_SHIFT-10), data << (PAGE_SHIFT-10), mm->stack_vm << (PAGE_SHIFT-10), text, lib, - (PTRS_PER_PTE * sizeof(pte_t) * - atomic_long_read(&mm->nr_ptes)) >> 10, + ptes >> 10, + pmds >> 10, swap << (PAGE_SHIFT-10)); } @@ -433,7 +436,6 @@ const struct file_operations proc_tid_maps_operations = { #ifdef CONFIG_PROC_PAGE_MONITOR struct mem_size_stats { - struct vm_area_struct *vma; unsigned long resident; unsigned long shared_clean; unsigned long shared_dirty; @@ -443,7 +445,6 @@ struct mem_size_stats { unsigned long anonymous; unsigned long anonymous_thp; unsigned long swap; - unsigned long nonlinear; u64 pss; }; @@ -483,8 +484,7 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; - struct vm_area_struct *vma = mss->vma; - pgoff_t pgoff = linear_page_index(vma, addr); + struct vm_area_struct *vma = walk->vma; struct page *page = NULL; if (pte_present(*pte)) { @@ -496,17 +496,10 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr, mss->swap += PAGE_SIZE; else if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); - } else if (pte_file(*pte)) { - if (pte_to_pgoff(*pte) != pgoff) - mss->nonlinear += PAGE_SIZE; } if (!page) return; - - if (page->index != pgoff) - mss->nonlinear += PAGE_SIZE; - smaps_account(mss, page, PAGE_SIZE, pte_young(*pte), pte_dirty(*pte)); } @@ -515,7 +508,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; - struct vm_area_struct *vma = mss->vma; + struct vm_area_struct *vma = walk->vma; struct page *page; /* FOLL_DUMP will return -EFAULT on huge zero page */ @@ -536,8 +529,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { - struct mem_size_stats *mss = walk->private; - struct vm_area_struct *vma = mss->vma; + struct vm_area_struct *vma = walk->vma; pte_t *pte; spinlock_t *ptl; @@ -596,7 +588,6 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_ACCOUNT)] = "ac", [ilog2(VM_NORESERVE)] = "nr", [ilog2(VM_HUGETLB)] = "ht", - [ilog2(VM_NONLINEAR)] = "nl", [ilog2(VM_ARCH_1)] = "ar", [ilog2(VM_DONTDUMP)] = "dd", #ifdef CONFIG_MEM_SOFT_DIRTY @@ -630,10 +621,8 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) }; memset(&mss, 0, sizeof mss); - mss.vma = vma; /* mmap_sem is held in m_start */ - if (vma->vm_mm && !is_vm_hugetlb_page(vma)) - walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk); + walk_page_vma(vma, &smaps_walk); show_map_vma(m, vma, is_pid); @@ -668,10 +657,6 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) (vma->vm_flags & VM_LOCKED) ? (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); - if (vma->vm_flags & VM_NONLINEAR) - seq_printf(m, "Nonlinear: %8lu kB\n", - mss.nonlinear >> 10); - show_smap_vma_flags(m, vma); m_cache_vma(m, vma); return 0; @@ -751,14 +736,13 @@ enum clear_refs_types { }; struct clear_refs_private { - struct vm_area_struct *vma; enum clear_refs_types type; }; +#ifdef CONFIG_MEM_SOFT_DIRTY static inline void clear_soft_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *pte) { -#ifdef CONFIG_MEM_SOFT_DIRTY /* * The soft-dirty tracker uses #PF-s to catch writes * to pages, so write-protect the pte as well. See the @@ -772,24 +756,63 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma, ptent = pte_clear_flags(ptent, _PAGE_SOFT_DIRTY); } else if (is_swap_pte(ptent)) { ptent = pte_swp_clear_soft_dirty(ptent); - } else if (pte_file(ptent)) { - ptent = pte_file_clear_soft_dirty(ptent); } set_pte_at(vma->vm_mm, addr, pte, ptent); -#endif } +static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmdp) +{ + pmd_t pmd = *pmdp; + + pmd = pmd_wrprotect(pmd); + pmd = pmd_clear_flags(pmd, _PAGE_SOFT_DIRTY); + + if (vma->vm_flags & VM_SOFTDIRTY) + vma->vm_flags &= ~VM_SOFTDIRTY; + + set_pmd_at(vma->vm_mm, addr, pmdp, pmd); +} + +#else + +static inline void clear_soft_dirty(struct vm_area_struct *vma, + unsigned long addr, pte_t *pte) +{ +} + +static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmdp) +{ +} +#endif + static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct clear_refs_private *cp = walk->private; - struct vm_area_struct *vma = cp->vma; + struct vm_area_struct *vma = walk->vma; pte_t *pte, ptent; spinlock_t *ptl; struct page *page; - split_huge_page_pmd(vma, addr, pmd); + if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { + if (cp->type == CLEAR_REFS_SOFT_DIRTY) { + clear_soft_dirty_pmd(vma, addr, pmd); + goto out; + } + + page = pmd_page(*pmd); + + /* Clear accessed and referenced bits. */ + pmdp_test_and_clear_young(vma, addr, pmd); + ClearPageReferenced(page); +out: + spin_unlock(ptl); + return 0; + } + if (pmd_trans_unstable(pmd)) return 0; @@ -818,6 +841,28 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, return 0; } +static int clear_refs_test_walk(unsigned long start, unsigned long end, + struct mm_walk *walk) +{ + struct clear_refs_private *cp = walk->private; + struct vm_area_struct *vma = walk->vma; + + if (vma->vm_flags & VM_PFNMAP) + return 1; + + /* + * Writing 1 to /proc/pid/clear_refs affects all pages. + * Writing 2 to /proc/pid/clear_refs only affects anonymous pages. + * Writing 3 to /proc/pid/clear_refs only affects file mapped pages. + * Writing 4 to /proc/pid/clear_refs affects all pages. + */ + if (cp->type == CLEAR_REFS_ANON && vma->vm_file) + return 1; + if (cp->type == CLEAR_REFS_MAPPED && !vma->vm_file) + return 1; + return 0; +} + static ssize_t clear_refs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { @@ -858,6 +903,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, }; struct mm_walk clear_refs_walk = { .pmd_entry = clear_refs_pte_range, + .test_walk = clear_refs_test_walk, .mm = mm, .private = &cp, }; @@ -877,28 +923,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, } mmu_notifier_invalidate_range_start(mm, 0, -1); } - for (vma = mm->mmap; vma; vma = vma->vm_next) { - cp.vma = vma; - if (is_vm_hugetlb_page(vma)) - continue; - /* - * Writing 1 to /proc/pid/clear_refs affects all pages. - * - * Writing 2 to /proc/pid/clear_refs only affects - * Anonymous pages. - * - * Writing 3 to /proc/pid/clear_refs only affects file - * mapped pages. - * - * Writing 4 to /proc/pid/clear_refs affects all pages. - */ - if (type == CLEAR_REFS_ANON && vma->vm_file) - continue; - if (type == CLEAR_REFS_MAPPED && !vma->vm_file) - continue; - walk_page_range(vma->vm_start, vma->vm_end, - &clear_refs_walk); - } + walk_page_range(0, ~0UL, &clear_refs_walk); if (type == CLEAR_REFS_SOFT_DIRTY) mmu_notifier_invalidate_range_end(mm, 0, -1); flush_tlb_mm(mm); @@ -1066,15 +1091,13 @@ static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, struct pagemap static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { - struct vm_area_struct *vma; + struct vm_area_struct *vma = walk->vma; struct pagemapread *pm = walk->private; spinlock_t *ptl; - pte_t *pte; + pte_t *pte, *orig_pte; int err = 0; - /* find the first VMA at or above 'addr' */ - vma = find_vma(walk->mm, addr); - if (vma && pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { + if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { int pmd_flags2; if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(*pmd)) @@ -1100,51 +1123,20 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, if (pmd_trans_unstable(pmd)) return 0; - while (1) { - /* End of address space hole, which we mark as non-present. */ - unsigned long hole_end; - - if (vma) - hole_end = min(end, vma->vm_start); - else - hole_end = end; - - for (; addr < hole_end; addr += PAGE_SIZE) { - pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2)); - - err = add_to_pagemap(addr, &pme, pm); - if (err) - return err; - } - - if (!vma || vma->vm_start >= end) - break; - /* - * We can't possibly be in a hugetlb VMA. In general, - * for a mm_walk with a pmd_entry and a hugetlb_entry, - * the pmd_entry can only be called on addresses in a - * hugetlb if the walk starts in a non-hugetlb VMA and - * spans a hugepage VMA. Since pagemap_read walks are - * PMD-sized and PMD-aligned, this will never be true. - */ - BUG_ON(is_vm_hugetlb_page(vma)); - - /* Addresses in the VMA. */ - for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { - pagemap_entry_t pme; - pte = pte_offset_map(pmd, addr); - pte_to_pagemap_entry(&pme, pm, vma, addr, *pte); - pte_unmap(pte); - err = add_to_pagemap(addr, &pme, pm); - if (err) - return err; - } + /* + * We can assume that @vma always points to a valid one and @end never + * goes beyond vma->vm_end. + */ + orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); + for (; addr < end; pte++, addr += PAGE_SIZE) { + pagemap_entry_t pme; - if (addr == end) + pte_to_pagemap_entry(&pme, pm, vma, addr, *pte); + err = add_to_pagemap(addr, &pme, pm); + if (err) break; - - vma = find_vma(walk->mm, addr); } + pte_unmap_unlock(orig_pte, ptl); cond_resched(); @@ -1170,15 +1162,12 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask, struct mm_walk *walk) { struct pagemapread *pm = walk->private; - struct vm_area_struct *vma; + struct vm_area_struct *vma = walk->vma; int err = 0; int flags2; pagemap_entry_t pme; - vma = find_vma(walk->mm, addr); - WARN_ON_ONCE(!vma); - - if (vma && (vma->vm_flags & VM_SOFTDIRTY)) + if (vma->vm_flags & VM_SOFTDIRTY) flags2 = __PM_SOFT_DIRTY; else flags2 = 0; @@ -1338,7 +1327,6 @@ const struct file_operations proc_pagemap_operations = { #ifdef CONFIG_NUMA struct numa_maps { - struct vm_area_struct *vma; unsigned long pages; unsigned long anon; unsigned long active; @@ -1407,18 +1395,17 @@ static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma, static int gather_pte_stats(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { - struct numa_maps *md; + struct numa_maps *md = walk->private; + struct vm_area_struct *vma = walk->vma; spinlock_t *ptl; pte_t *orig_pte; pte_t *pte; - md = walk->private; - - if (pmd_trans_huge_lock(pmd, md->vma, &ptl) == 1) { + if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { pte_t huge_pte = *(pte_t *)pmd; struct page *page; - page = can_gather_numa_stats(huge_pte, md->vma, addr); + page = can_gather_numa_stats(huge_pte, vma, addr); if (page) gather_stats(page, md, pte_dirty(huge_pte), HPAGE_PMD_SIZE/PAGE_SIZE); @@ -1430,7 +1417,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr, return 0; orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); do { - struct page *page = can_gather_numa_stats(*pte, md->vma, addr); + struct page *page = can_gather_numa_stats(*pte, vma, addr); if (!page) continue; gather_stats(page, md, pte_dirty(*pte), 1); @@ -1440,7 +1427,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr, return 0; } #ifdef CONFIG_HUGETLB_PAGE -static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, +static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct numa_maps *md; @@ -1459,7 +1446,7 @@ static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, } #else -static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, +static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { return 0; @@ -1477,7 +1464,12 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) struct numa_maps *md = &numa_priv->md; struct file *file = vma->vm_file; struct mm_struct *mm = vma->vm_mm; - struct mm_walk walk = {}; + struct mm_walk walk = { + .hugetlb_entry = gather_hugetlb_stats, + .pmd_entry = gather_pte_stats, + .private = md, + .mm = mm, + }; struct mempolicy *pol; char buffer[64]; int nid; @@ -1488,13 +1480,6 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) /* Ensure we start with an empty set of numa_maps statistics. */ memset(md, 0, sizeof(*md)); - md->vma = vma; - - walk.hugetlb_entry = gather_hugetbl_stats; - walk.pmd_entry = gather_pte_stats; - walk.private = md; - walk.mm = mm; - pol = __get_vma_policy(vma, vma->vm_start); if (pol) { mpol_to_str(buffer, sizeof(buffer), pol); @@ -1528,7 +1513,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) if (is_vm_hugetlb_page(vma)) seq_puts(m, " huge"); - walk_page_range(vma->vm_start, vma->vm_end, &walk); + /* mmap_sem is held by m_start */ + walk_page_vma(vma, &walk); if (!md->pages) goto out; diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index 983d951..916b8e2 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -21,6 +21,16 @@ config PSTORE_CONSOLE When the option is enabled, pstore will log all kernel messages, even if no oops or panic happened. +config PSTORE_PMSG + bool "Log user space messages" + depends on PSTORE + help + When the option is enabled, pstore will export a character + interface /dev/pmsg0 to log user space messages. On reboot + data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID]. + + If unsure, say N. + config PSTORE_FTRACE bool "Persistent function tracer" depends on PSTORE diff --git a/fs/pstore/Makefile b/fs/pstore/Makefile index 4c9095c..e647d8e 100644 --- a/fs/pstore/Makefile +++ b/fs/pstore/Makefile @@ -7,5 +7,7 @@ obj-y += pstore.o pstore-objs += inode.o platform.o obj-$(CONFIG_PSTORE_FTRACE) += ftrace.o +obj-$(CONFIG_PSTORE_PMSG) += pmsg.o + ramoops-objs += ram.o ram_core.o obj-$(CONFIG_PSTORE_RAM) += ramoops.o diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 5041660..b32ce53 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -338,32 +338,38 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id, int count, switch (type) { case PSTORE_TYPE_DMESG: - sprintf(name, "dmesg-%s-%lld%s", psname, id, - compressed ? ".enc.z" : ""); + scnprintf(name, sizeof(name), "dmesg-%s-%lld%s", + psname, id, compressed ? ".enc.z" : ""); break; case PSTORE_TYPE_CONSOLE: - sprintf(name, "console-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "console-%s-%lld", psname, id); break; case PSTORE_TYPE_FTRACE: - sprintf(name, "ftrace-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "ftrace-%s-%lld", psname, id); break; case PSTORE_TYPE_MCE: - sprintf(name, "mce-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "mce-%s-%lld", psname, id); break; case PSTORE_TYPE_PPC_RTAS: - sprintf(name, "rtas-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "rtas-%s-%lld", psname, id); break; case PSTORE_TYPE_PPC_OF: - sprintf(name, "powerpc-ofw-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "powerpc-ofw-%s-%lld", + psname, id); break; case PSTORE_TYPE_PPC_COMMON: - sprintf(name, "powerpc-common-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "powerpc-common-%s-%lld", + psname, id); + break; + case PSTORE_TYPE_PMSG: + scnprintf(name, sizeof(name), "pmsg-%s-%lld", psname, id); break; case PSTORE_TYPE_UNKNOWN: - sprintf(name, "unknown-%s-%lld", psname, id); + scnprintf(name, sizeof(name), "unknown-%s-%lld", psname, id); break; default: - sprintf(name, "type%d-%s-%lld", type, psname, id); + scnprintf(name, sizeof(name), "type%d-%s-%lld", + type, psname, id); break; } diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h index 3b3d305..c36ba2c 100644 --- a/fs/pstore/internal.h +++ b/fs/pstore/internal.h @@ -45,6 +45,12 @@ extern void pstore_register_ftrace(void); static inline void pstore_register_ftrace(void) {} #endif +#ifdef CONFIG_PSTORE_PMSG +extern void pstore_register_pmsg(void); +#else +static inline void pstore_register_pmsg(void) {} +#endif + extern struct pstore_info *psinfo; extern void pstore_set_kmsg_bytes(int); diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 0a9b72c..c4c9a10 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -301,7 +301,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, if (big_oops_buf) { dst = big_oops_buf; - hsize = sprintf(dst, "%s#%d Part%d\n", why, + hsize = sprintf(dst, "%s#%d Part%u\n", why, oopscount, part); size = big_oops_buf_sz - hsize; @@ -321,7 +321,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, } } else { dst = psinfo->buf; - hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, + hsize = sprintf(dst, "%s#%d Part%u\n", why, oopscount, part); size = psinfo->bufsize - hsize; dst += hsize; @@ -447,6 +447,7 @@ int pstore_register(struct pstore_info *psi) if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) { pstore_register_console(); pstore_register_ftrace(); + pstore_register_pmsg(); } if (pstore_update_ms >= 0) { diff --git a/fs/pstore/pmsg.c b/fs/pstore/pmsg.c new file mode 100644 index 0000000..feb5dd2 --- /dev/null +++ b/fs/pstore/pmsg.c @@ -0,0 +1,114 @@ +/* + * Copyright 2014 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/cdev.h> +#include <linux/device.h> +#include <linux/fs.h> +#include <linux/uaccess.h> +#include <linux/vmalloc.h> +#include "internal.h" + +static DEFINE_MUTEX(pmsg_lock); +#define PMSG_MAX_BOUNCE_BUFFER_SIZE (2*PAGE_SIZE) + +static ssize_t write_pmsg(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + size_t i, buffer_size; + char *buffer; + + if (!count) + return 0; + + if (!access_ok(VERIFY_READ, buf, count)) + return -EFAULT; + + buffer_size = count; + if (buffer_size > PMSG_MAX_BOUNCE_BUFFER_SIZE) + buffer_size = PMSG_MAX_BOUNCE_BUFFER_SIZE; + buffer = vmalloc(buffer_size); + + mutex_lock(&pmsg_lock); + for (i = 0; i < count; ) { + size_t c = min(count - i, buffer_size); + u64 id; + long ret; + + ret = __copy_from_user(buffer, buf + i, c); + if (unlikely(ret != 0)) { + mutex_unlock(&pmsg_lock); + vfree(buffer); + return -EFAULT; + } + psinfo->write_buf(PSTORE_TYPE_PMSG, 0, &id, 0, buffer, 0, c, + psinfo); + + i += c; + } + + mutex_unlock(&pmsg_lock); + vfree(buffer); + return count; +} + +static const struct file_operations pmsg_fops = { + .owner = THIS_MODULE, + .llseek = noop_llseek, + .write = write_pmsg, +}; + +static struct class *pmsg_class; +static int pmsg_major; +#define PMSG_NAME "pmsg" +#undef pr_fmt +#define pr_fmt(fmt) PMSG_NAME ": " fmt + +static char *pmsg_devnode(struct device *dev, umode_t *mode) +{ + if (mode) + *mode = 0220; + return NULL; +} + +void pstore_register_pmsg(void) +{ + struct device *pmsg_device; + + pmsg_major = register_chrdev(0, PMSG_NAME, &pmsg_fops); + if (pmsg_major < 0) { + pr_err("register_chrdev failed\n"); + goto err; + } + + pmsg_class = class_create(THIS_MODULE, PMSG_NAME); + if (IS_ERR(pmsg_class)) { + pr_err("device class file already in use\n"); + goto err_class; + } + pmsg_class->devnode = pmsg_devnode; + + pmsg_device = device_create(pmsg_class, NULL, MKDEV(pmsg_major, 0), + NULL, "%s%d", PMSG_NAME, 0); + if (IS_ERR(pmsg_device)) { + pr_err("failed to create device\n"); + goto err_device; + } + return; + +err_device: + class_destroy(pmsg_class); +err_class: + unregister_chrdev(pmsg_major, PMSG_NAME); +err: + return; +} diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 8613e5b..39d1373 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -51,6 +51,10 @@ static ulong ramoops_ftrace_size = MIN_MEM_SIZE; module_param_named(ftrace_size, ramoops_ftrace_size, ulong, 0400); MODULE_PARM_DESC(ftrace_size, "size of ftrace log"); +static ulong ramoops_pmsg_size = MIN_MEM_SIZE; +module_param_named(pmsg_size, ramoops_pmsg_size, ulong, 0400); +MODULE_PARM_DESC(pmsg_size, "size of user space message log"); + static ulong mem_address; module_param(mem_address, ulong, 0400); MODULE_PARM_DESC(mem_address, @@ -82,12 +86,14 @@ struct ramoops_context { struct persistent_ram_zone **przs; struct persistent_ram_zone *cprz; struct persistent_ram_zone *fprz; + struct persistent_ram_zone *mprz; phys_addr_t phys_addr; unsigned long size; unsigned int memtype; size_t record_size; size_t console_size; size_t ftrace_size; + size_t pmsg_size; int dump_oops; struct persistent_ram_ecc_info ecc_info; unsigned int max_dump_cnt; @@ -96,6 +102,7 @@ struct ramoops_context { unsigned int dump_read_cnt; unsigned int console_read_cnt; unsigned int ftrace_read_cnt; + unsigned int pmsg_read_cnt; struct pstore_info pstore; }; @@ -109,6 +116,7 @@ static int ramoops_pstore_open(struct pstore_info *psi) cxt->dump_read_cnt = 0; cxt->console_read_cnt = 0; cxt->ftrace_read_cnt = 0; + cxt->pmsg_read_cnt = 0; return 0; } @@ -164,6 +172,12 @@ static int ramoops_read_kmsg_hdr(char *buffer, struct timespec *time, return header_length; } +static bool prz_ok(struct persistent_ram_zone *prz) +{ + return !!prz && !!(persistent_ram_old_size(prz) + + persistent_ram_ecc_string(prz, NULL, 0)); +} + static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, int *count, struct timespec *time, char **buf, bool *compressed, @@ -178,13 +192,16 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, prz = ramoops_get_next_prz(cxt->przs, &cxt->dump_read_cnt, cxt->max_dump_cnt, id, type, PSTORE_TYPE_DMESG, 1); - if (!prz) + if (!prz_ok(prz)) prz = ramoops_get_next_prz(&cxt->cprz, &cxt->console_read_cnt, 1, id, type, PSTORE_TYPE_CONSOLE, 0); - if (!prz) + if (!prz_ok(prz)) prz = ramoops_get_next_prz(&cxt->fprz, &cxt->ftrace_read_cnt, 1, id, type, PSTORE_TYPE_FTRACE, 0); - if (!prz) + if (!prz_ok(prz)) + prz = ramoops_get_next_prz(&cxt->mprz, &cxt->pmsg_read_cnt, + 1, id, type, PSTORE_TYPE_PMSG, 0); + if (!prz_ok(prz)) return 0; if (!persistent_ram_old(prz)) @@ -252,6 +269,11 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type, return -ENOMEM; persistent_ram_write(cxt->fprz, buf, size); return 0; + } else if (type == PSTORE_TYPE_PMSG) { + if (!cxt->mprz) + return -ENOMEM; + persistent_ram_write(cxt->mprz, buf, size); + return 0; } if (type != PSTORE_TYPE_DMESG) @@ -309,6 +331,9 @@ static int ramoops_pstore_erase(enum pstore_type_id type, u64 id, int count, case PSTORE_TYPE_FTRACE: prz = cxt->fprz; break; + case PSTORE_TYPE_PMSG: + prz = cxt->mprz; + break; default: return -EINVAL; } @@ -435,7 +460,7 @@ static int ramoops_probe(struct platform_device *pdev) goto fail_out; if (!pdata->mem_size || (!pdata->record_size && !pdata->console_size && - !pdata->ftrace_size)) { + !pdata->ftrace_size && !pdata->pmsg_size)) { pr_err("The memory size and the record/console size must be " "non-zero\n"); goto fail_out; @@ -447,6 +472,8 @@ static int ramoops_probe(struct platform_device *pdev) pdata->console_size = rounddown_pow_of_two(pdata->console_size); if (pdata->ftrace_size && !is_power_of_2(pdata->ftrace_size)) pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size); + if (pdata->pmsg_size && !is_power_of_2(pdata->pmsg_size)) + pdata->pmsg_size = rounddown_pow_of_two(pdata->pmsg_size); cxt->size = pdata->mem_size; cxt->phys_addr = pdata->mem_address; @@ -454,12 +481,14 @@ static int ramoops_probe(struct platform_device *pdev) cxt->record_size = pdata->record_size; cxt->console_size = pdata->console_size; cxt->ftrace_size = pdata->ftrace_size; + cxt->pmsg_size = pdata->pmsg_size; cxt->dump_oops = pdata->dump_oops; cxt->ecc_info = pdata->ecc_info; paddr = cxt->phys_addr; - dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size; + dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size + - cxt->pmsg_size; err = ramoops_init_przs(dev, cxt, &paddr, dump_mem_sz); if (err) goto fail_out; @@ -474,13 +503,9 @@ static int ramoops_probe(struct platform_device *pdev) if (err) goto fail_init_fprz; - if (!cxt->przs && !cxt->cprz && !cxt->fprz) { - pr_err("memory size too small, minimum is %zu\n", - cxt->console_size + cxt->record_size + - cxt->ftrace_size); - err = -EINVAL; - goto fail_cnt; - } + err = ramoops_init_prz(dev, cxt, &cxt->mprz, &paddr, cxt->pmsg_size, 0); + if (err) + goto fail_init_mprz; cxt->pstore.data = cxt; /* @@ -525,7 +550,8 @@ fail_buf: kfree(cxt->pstore.buf); fail_clear: cxt->pstore.bufsize = 0; -fail_cnt: + kfree(cxt->mprz); +fail_init_mprz: kfree(cxt->fprz); fail_init_fprz: kfree(cxt->cprz); @@ -583,6 +609,7 @@ static void ramoops_register_dummy(void) dummy_data->record_size = record_size; dummy_data->console_size = ramoops_console_size; dummy_data->ftrace_size = ramoops_ftrace_size; + dummy_data->pmsg_size = ramoops_pmsg_size; dummy_data->dump_oops = dump_oops; /* * For backwards compatibility ramoops.ecc=1 means 16 bytes ECC diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig index c51df1d..4a09975 100644 --- a/fs/quota/Kconfig +++ b/fs/quota/Kconfig @@ -5,6 +5,7 @@ config QUOTA bool "Quota support" select QUOTACTL + select SRCU help If you say Y here, you will be able to set per user limits for disk usage (also called disk quotas). Currently, it works for the diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 8f0acef..0ccd4ba 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1248,7 +1248,7 @@ static int ignore_hardlimit(struct dquot *dquot) return capable(CAP_SYS_RESOURCE) && (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD || - !(info->dqi_flags & V1_DQF_RSQUASH)); + !(info->dqi_flags & DQF_ROOT_SQUASH)); } /* needs dq_data_lock */ @@ -2385,41 +2385,106 @@ out: } EXPORT_SYMBOL(dquot_quota_on_mount); -static inline qsize_t qbtos(qsize_t blocks) +static int dquot_quota_enable(struct super_block *sb, unsigned int flags) { - return blocks << QIF_DQBLKSIZE_BITS; + int ret; + int type; + struct quota_info *dqopt = sb_dqopt(sb); + + if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) + return -ENOSYS; + /* Accounting cannot be turned on while fs is mounted */ + flags &= ~(FS_QUOTA_UDQ_ACCT | FS_QUOTA_GDQ_ACCT | FS_QUOTA_PDQ_ACCT); + if (!flags) + return -EINVAL; + for (type = 0; type < MAXQUOTAS; type++) { + if (!(flags & qtype_enforce_flag(type))) + continue; + /* Can't enforce without accounting */ + if (!sb_has_quota_usage_enabled(sb, type)) + return -EINVAL; + ret = dquot_enable(dqopt->files[type], type, + dqopt->info[type].dqi_fmt_id, + DQUOT_LIMITS_ENABLED); + if (ret < 0) + goto out_err; + } + return 0; +out_err: + /* Backout enforcement enablement we already did */ + for (type--; type >= 0; type--) { + if (flags & qtype_enforce_flag(type)) + dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); + } + /* Error code translation for better compatibility with XFS */ + if (ret == -EBUSY) + ret = -EEXIST; + return ret; } -static inline qsize_t stoqb(qsize_t space) +static int dquot_quota_disable(struct super_block *sb, unsigned int flags) { - return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS; + int ret; + int type; + struct quota_info *dqopt = sb_dqopt(sb); + + if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) + return -ENOSYS; + /* + * We don't support turning off accounting via quotactl. In principle + * quota infrastructure can do this but filesystems don't expect + * userspace to be able to do it. + */ + if (flags & + (FS_QUOTA_UDQ_ACCT | FS_QUOTA_GDQ_ACCT | FS_QUOTA_PDQ_ACCT)) + return -EOPNOTSUPP; + + /* Filter out limits not enabled */ + for (type = 0; type < MAXQUOTAS; type++) + if (!sb_has_quota_limits_enabled(sb, type)) + flags &= ~qtype_enforce_flag(type); + /* Nothing left? */ + if (!flags) + return -EEXIST; + for (type = 0; type < MAXQUOTAS; type++) { + if (flags & qtype_enforce_flag(type)) { + ret = dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); + if (ret < 0) + goto out_err; + } + } + return 0; +out_err: + /* Backout enforcement disabling we already did */ + for (type--; type >= 0; type--) { + if (flags & qtype_enforce_flag(type)) + dquot_enable(dqopt->files[type], type, + dqopt->info[type].dqi_fmt_id, + DQUOT_LIMITS_ENABLED); + } + return ret; } /* Generic routine for getting common part of quota structure */ -static void do_get_dqblk(struct dquot *dquot, struct fs_disk_quota *di) +static void do_get_dqblk(struct dquot *dquot, struct qc_dqblk *di) { struct mem_dqblk *dm = &dquot->dq_dqb; memset(di, 0, sizeof(*di)); - di->d_version = FS_DQUOT_VERSION; - di->d_flags = dquot->dq_id.type == USRQUOTA ? - FS_USER_QUOTA : FS_GROUP_QUOTA; - di->d_id = from_kqid_munged(current_user_ns(), dquot->dq_id); - spin_lock(&dq_data_lock); - di->d_blk_hardlimit = stoqb(dm->dqb_bhardlimit); - di->d_blk_softlimit = stoqb(dm->dqb_bsoftlimit); + di->d_spc_hardlimit = dm->dqb_bhardlimit; + di->d_spc_softlimit = dm->dqb_bsoftlimit; di->d_ino_hardlimit = dm->dqb_ihardlimit; di->d_ino_softlimit = dm->dqb_isoftlimit; - di->d_bcount = dm->dqb_curspace + dm->dqb_rsvspace; - di->d_icount = dm->dqb_curinodes; - di->d_btimer = dm->dqb_btime; - di->d_itimer = dm->dqb_itime; + di->d_space = dm->dqb_curspace + dm->dqb_rsvspace; + di->d_ino_count = dm->dqb_curinodes; + di->d_spc_timer = dm->dqb_btime; + di->d_ino_timer = dm->dqb_itime; spin_unlock(&dq_data_lock); } int dquot_get_dqblk(struct super_block *sb, struct kqid qid, - struct fs_disk_quota *di) + struct qc_dqblk *di) { struct dquot *dquot; @@ -2433,70 +2498,70 @@ int dquot_get_dqblk(struct super_block *sb, struct kqid qid, } EXPORT_SYMBOL(dquot_get_dqblk); -#define VFS_FS_DQ_MASK \ - (FS_DQ_BCOUNT | FS_DQ_BSOFT | FS_DQ_BHARD | \ - FS_DQ_ICOUNT | FS_DQ_ISOFT | FS_DQ_IHARD | \ - FS_DQ_BTIMER | FS_DQ_ITIMER) +#define VFS_QC_MASK \ + (QC_SPACE | QC_SPC_SOFT | QC_SPC_HARD | \ + QC_INO_COUNT | QC_INO_SOFT | QC_INO_HARD | \ + QC_SPC_TIMER | QC_INO_TIMER) /* Generic routine for setting common part of quota structure */ -static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di) +static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) { struct mem_dqblk *dm = &dquot->dq_dqb; int check_blim = 0, check_ilim = 0; struct mem_dqinfo *dqi = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type]; - if (di->d_fieldmask & ~VFS_FS_DQ_MASK) + if (di->d_fieldmask & ~VFS_QC_MASK) return -EINVAL; - if (((di->d_fieldmask & FS_DQ_BSOFT) && - (di->d_blk_softlimit > dqi->dqi_maxblimit)) || - ((di->d_fieldmask & FS_DQ_BHARD) && - (di->d_blk_hardlimit > dqi->dqi_maxblimit)) || - ((di->d_fieldmask & FS_DQ_ISOFT) && - (di->d_ino_softlimit > dqi->dqi_maxilimit)) || - ((di->d_fieldmask & FS_DQ_IHARD) && - (di->d_ino_hardlimit > dqi->dqi_maxilimit))) + if (((di->d_fieldmask & QC_SPC_SOFT) && + di->d_spc_softlimit > dqi->dqi_max_spc_limit) || + ((di->d_fieldmask & QC_SPC_HARD) && + di->d_spc_hardlimit > dqi->dqi_max_spc_limit) || + ((di->d_fieldmask & QC_INO_SOFT) && + (di->d_ino_softlimit > dqi->dqi_max_ino_limit)) || + ((di->d_fieldmask & QC_INO_HARD) && + (di->d_ino_hardlimit > dqi->dqi_max_ino_limit))) return -ERANGE; spin_lock(&dq_data_lock); - if (di->d_fieldmask & FS_DQ_BCOUNT) { - dm->dqb_curspace = di->d_bcount - dm->dqb_rsvspace; + if (di->d_fieldmask & QC_SPACE) { + dm->dqb_curspace = di->d_space - dm->dqb_rsvspace; check_blim = 1; set_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags); } - if (di->d_fieldmask & FS_DQ_BSOFT) - dm->dqb_bsoftlimit = qbtos(di->d_blk_softlimit); - if (di->d_fieldmask & FS_DQ_BHARD) - dm->dqb_bhardlimit = qbtos(di->d_blk_hardlimit); - if (di->d_fieldmask & (FS_DQ_BSOFT | FS_DQ_BHARD)) { + if (di->d_fieldmask & QC_SPC_SOFT) + dm->dqb_bsoftlimit = di->d_spc_softlimit; + if (di->d_fieldmask & QC_SPC_HARD) + dm->dqb_bhardlimit = di->d_spc_hardlimit; + if (di->d_fieldmask & (QC_SPC_SOFT | QC_SPC_HARD)) { check_blim = 1; set_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags); } - if (di->d_fieldmask & FS_DQ_ICOUNT) { - dm->dqb_curinodes = di->d_icount; + if (di->d_fieldmask & QC_INO_COUNT) { + dm->dqb_curinodes = di->d_ino_count; check_ilim = 1; set_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags); } - if (di->d_fieldmask & FS_DQ_ISOFT) + if (di->d_fieldmask & QC_INO_SOFT) dm->dqb_isoftlimit = di->d_ino_softlimit; - if (di->d_fieldmask & FS_DQ_IHARD) + if (di->d_fieldmask & QC_INO_HARD) dm->dqb_ihardlimit = di->d_ino_hardlimit; - if (di->d_fieldmask & (FS_DQ_ISOFT | FS_DQ_IHARD)) { + if (di->d_fieldmask & (QC_INO_SOFT | QC_INO_HARD)) { check_ilim = 1; set_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags); } - if (di->d_fieldmask & FS_DQ_BTIMER) { - dm->dqb_btime = di->d_btimer; + if (di->d_fieldmask & QC_SPC_TIMER) { + dm->dqb_btime = di->d_spc_timer; check_blim = 1; set_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags); } - if (di->d_fieldmask & FS_DQ_ITIMER) { - dm->dqb_itime = di->d_itimer; + if (di->d_fieldmask & QC_INO_TIMER) { + dm->dqb_itime = di->d_ino_timer; check_ilim = 1; set_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); } @@ -2506,7 +2571,7 @@ static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di) dm->dqb_curspace < dm->dqb_bsoftlimit) { dm->dqb_btime = 0; clear_bit(DQ_BLKS_B, &dquot->dq_flags); - } else if (!(di->d_fieldmask & FS_DQ_BTIMER)) + } else if (!(di->d_fieldmask & QC_SPC_TIMER)) /* Set grace only if user hasn't provided his own... */ dm->dqb_btime = get_seconds() + dqi->dqi_bgrace; } @@ -2515,7 +2580,7 @@ static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di) dm->dqb_curinodes < dm->dqb_isoftlimit) { dm->dqb_itime = 0; clear_bit(DQ_INODES_B, &dquot->dq_flags); - } else if (!(di->d_fieldmask & FS_DQ_ITIMER)) + } else if (!(di->d_fieldmask & QC_INO_TIMER)) /* Set grace only if user hasn't provided his own... */ dm->dqb_itime = get_seconds() + dqi->dqi_igrace; } @@ -2531,7 +2596,7 @@ static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di) } int dquot_set_dqblk(struct super_block *sb, struct kqid qid, - struct fs_disk_quota *di) + struct qc_dqblk *di) { struct dquot *dquot; int rc; @@ -2582,6 +2647,14 @@ int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii) goto out; } mi = sb_dqopt(sb)->info + type; + if (ii->dqi_valid & IIF_FLAGS) { + if (ii->dqi_flags & ~DQF_SETINFO_MASK || + (ii->dqi_flags & DQF_ROOT_SQUASH && + mi->dqi_format->qf_fmt_id != QFMT_VFS_OLD)) { + err = -EINVAL; + goto out; + } + } spin_lock(&dq_data_lock); if (ii->dqi_valid & IIF_BGRACE) mi->dqi_bgrace = ii->dqi_bgrace; @@ -2611,6 +2684,17 @@ const struct quotactl_ops dquot_quotactl_ops = { }; EXPORT_SYMBOL(dquot_quotactl_ops); +const struct quotactl_ops dquot_quotactl_sysfile_ops = { + .quota_enable = dquot_quota_enable, + .quota_disable = dquot_quota_disable, + .quota_sync = dquot_quota_sync, + .get_info = dquot_get_dqinfo, + .set_info = dquot_set_dqinfo, + .get_dqblk = dquot_get_dqblk, + .set_dqblk = dquot_set_dqblk +}; +EXPORT_SYMBOL(dquot_quotactl_sysfile_ops); + static int do_proc_dqstats(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { diff --git a/fs/quota/quota.c b/fs/quota/quota.c index 2aa4151..d14a799 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -66,18 +66,40 @@ static int quota_sync_all(int type) return ret; } +unsigned int qtype_enforce_flag(int type) +{ + switch (type) { + case USRQUOTA: + return FS_QUOTA_UDQ_ENFD; + case GRPQUOTA: + return FS_QUOTA_GDQ_ENFD; + case PRJQUOTA: + return FS_QUOTA_PDQ_ENFD; + } + return 0; +} + static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id, struct path *path) { - if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_on_meta) + if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_enable) return -ENOSYS; - if (sb->s_qcop->quota_on_meta) - return sb->s_qcop->quota_on_meta(sb, type, id); + if (sb->s_qcop->quota_enable) + return sb->s_qcop->quota_enable(sb, qtype_enforce_flag(type)); if (IS_ERR(path)) return PTR_ERR(path); return sb->s_qcop->quota_on(sb, type, id, path); } +static int quota_quotaoff(struct super_block *sb, int type) +{ + if (!sb->s_qcop->quota_off && !sb->s_qcop->quota_disable) + return -ENOSYS; + if (sb->s_qcop->quota_disable) + return sb->s_qcop->quota_disable(sb, qtype_enforce_flag(type)); + return sb->s_qcop->quota_off(sb, type); +} + static int quota_getfmt(struct super_block *sb, int type, void __user *addr) { __u32 fmt; @@ -118,17 +140,27 @@ static int quota_setinfo(struct super_block *sb, int type, void __user *addr) return sb->s_qcop->set_info(sb, type, &info); } -static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src) +static inline qsize_t qbtos(qsize_t blocks) +{ + return blocks << QIF_DQBLKSIZE_BITS; +} + +static inline qsize_t stoqb(qsize_t space) +{ + return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS; +} + +static void copy_to_if_dqblk(struct if_dqblk *dst, struct qc_dqblk *src) { memset(dst, 0, sizeof(*dst)); - dst->dqb_bhardlimit = src->d_blk_hardlimit; - dst->dqb_bsoftlimit = src->d_blk_softlimit; - dst->dqb_curspace = src->d_bcount; + dst->dqb_bhardlimit = stoqb(src->d_spc_hardlimit); + dst->dqb_bsoftlimit = stoqb(src->d_spc_softlimit); + dst->dqb_curspace = src->d_space; dst->dqb_ihardlimit = src->d_ino_hardlimit; dst->dqb_isoftlimit = src->d_ino_softlimit; - dst->dqb_curinodes = src->d_icount; - dst->dqb_btime = src->d_btimer; - dst->dqb_itime = src->d_itimer; + dst->dqb_curinodes = src->d_ino_count; + dst->dqb_btime = src->d_spc_timer; + dst->dqb_itime = src->d_ino_timer; dst->dqb_valid = QIF_ALL; } @@ -136,7 +168,7 @@ static int quota_getquota(struct super_block *sb, int type, qid_t id, void __user *addr) { struct kqid qid; - struct fs_disk_quota fdq; + struct qc_dqblk fdq; struct if_dqblk idq; int ret; @@ -154,36 +186,36 @@ static int quota_getquota(struct super_block *sb, int type, qid_t id, return 0; } -static void copy_from_if_dqblk(struct fs_disk_quota *dst, struct if_dqblk *src) +static void copy_from_if_dqblk(struct qc_dqblk *dst, struct if_dqblk *src) { - dst->d_blk_hardlimit = src->dqb_bhardlimit; - dst->d_blk_softlimit = src->dqb_bsoftlimit; - dst->d_bcount = src->dqb_curspace; + dst->d_spc_hardlimit = qbtos(src->dqb_bhardlimit); + dst->d_spc_softlimit = qbtos(src->dqb_bsoftlimit); + dst->d_space = src->dqb_curspace; dst->d_ino_hardlimit = src->dqb_ihardlimit; dst->d_ino_softlimit = src->dqb_isoftlimit; - dst->d_icount = src->dqb_curinodes; - dst->d_btimer = src->dqb_btime; - dst->d_itimer = src->dqb_itime; + dst->d_ino_count = src->dqb_curinodes; + dst->d_spc_timer = src->dqb_btime; + dst->d_ino_timer = src->dqb_itime; dst->d_fieldmask = 0; if (src->dqb_valid & QIF_BLIMITS) - dst->d_fieldmask |= FS_DQ_BSOFT | FS_DQ_BHARD; + dst->d_fieldmask |= QC_SPC_SOFT | QC_SPC_HARD; if (src->dqb_valid & QIF_SPACE) - dst->d_fieldmask |= FS_DQ_BCOUNT; + dst->d_fieldmask |= QC_SPACE; if (src->dqb_valid & QIF_ILIMITS) - dst->d_fieldmask |= FS_DQ_ISOFT | FS_DQ_IHARD; + dst->d_fieldmask |= QC_INO_SOFT | QC_INO_HARD; if (src->dqb_valid & QIF_INODES) - dst->d_fieldmask |= FS_DQ_ICOUNT; + dst->d_fieldmask |= QC_INO_COUNT; if (src->dqb_valid & QIF_BTIME) - dst->d_fieldmask |= FS_DQ_BTIMER; + dst->d_fieldmask |= QC_SPC_TIMER; if (src->dqb_valid & QIF_ITIME) - dst->d_fieldmask |= FS_DQ_ITIMER; + dst->d_fieldmask |= QC_INO_TIMER; } static int quota_setquota(struct super_block *sb, int type, qid_t id, void __user *addr) { - struct fs_disk_quota fdq; + struct qc_dqblk fdq; struct if_dqblk idq; struct kqid qid; @@ -198,15 +230,26 @@ static int quota_setquota(struct super_block *sb, int type, qid_t id, return sb->s_qcop->set_dqblk(sb, qid, &fdq); } -static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr) +static int quota_enable(struct super_block *sb, void __user *addr) +{ + __u32 flags; + + if (copy_from_user(&flags, addr, sizeof(flags))) + return -EFAULT; + if (!sb->s_qcop->quota_enable) + return -ENOSYS; + return sb->s_qcop->quota_enable(sb, flags); +} + +static int quota_disable(struct super_block *sb, void __user *addr) { __u32 flags; if (copy_from_user(&flags, addr, sizeof(flags))) return -EFAULT; - if (!sb->s_qcop->set_xstate) + if (!sb->s_qcop->quota_disable) return -ENOSYS; - return sb->s_qcop->set_xstate(sb, flags, cmd); + return sb->s_qcop->quota_disable(sb, flags); } static int quota_getxstate(struct super_block *sb, void __user *addr) @@ -247,10 +290,78 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr) return ret; } +/* + * XFS defines BBTOB and BTOBB macros inside fs/xfs/ and we cannot move them + * out of there as xfsprogs rely on definitions being in that header file. So + * just define same functions here for quota purposes. + */ +#define XFS_BB_SHIFT 9 + +static inline u64 quota_bbtob(u64 blocks) +{ + return blocks << XFS_BB_SHIFT; +} + +static inline u64 quota_btobb(u64 bytes) +{ + return (bytes + (1 << XFS_BB_SHIFT) - 1) >> XFS_BB_SHIFT; +} + +static void copy_from_xfs_dqblk(struct qc_dqblk *dst, struct fs_disk_quota *src) +{ + dst->d_spc_hardlimit = quota_bbtob(src->d_blk_hardlimit); + dst->d_spc_softlimit = quota_bbtob(src->d_blk_softlimit); + dst->d_ino_hardlimit = src->d_ino_hardlimit; + dst->d_ino_softlimit = src->d_ino_softlimit; + dst->d_space = quota_bbtob(src->d_bcount); + dst->d_ino_count = src->d_icount; + dst->d_ino_timer = src->d_itimer; + dst->d_spc_timer = src->d_btimer; + dst->d_ino_warns = src->d_iwarns; + dst->d_spc_warns = src->d_bwarns; + dst->d_rt_spc_hardlimit = quota_bbtob(src->d_rtb_hardlimit); + dst->d_rt_spc_softlimit = quota_bbtob(src->d_rtb_softlimit); + dst->d_rt_space = quota_bbtob(src->d_rtbcount); + dst->d_rt_spc_timer = src->d_rtbtimer; + dst->d_rt_spc_warns = src->d_rtbwarns; + dst->d_fieldmask = 0; + if (src->d_fieldmask & FS_DQ_ISOFT) + dst->d_fieldmask |= QC_INO_SOFT; + if (src->d_fieldmask & FS_DQ_IHARD) + dst->d_fieldmask |= QC_INO_HARD; + if (src->d_fieldmask & FS_DQ_BSOFT) + dst->d_fieldmask |= QC_SPC_SOFT; + if (src->d_fieldmask & FS_DQ_BHARD) + dst->d_fieldmask |= QC_SPC_HARD; + if (src->d_fieldmask & FS_DQ_RTBSOFT) + dst->d_fieldmask |= QC_RT_SPC_SOFT; + if (src->d_fieldmask & FS_DQ_RTBHARD) + dst->d_fieldmask |= QC_RT_SPC_HARD; + if (src->d_fieldmask & FS_DQ_BTIMER) + dst->d_fieldmask |= QC_SPC_TIMER; + if (src->d_fieldmask & FS_DQ_ITIMER) + dst->d_fieldmask |= QC_INO_TIMER; + if (src->d_fieldmask & FS_DQ_RTBTIMER) + dst->d_fieldmask |= QC_RT_SPC_TIMER; + if (src->d_fieldmask & FS_DQ_BWARNS) + dst->d_fieldmask |= QC_SPC_WARNS; + if (src->d_fieldmask & FS_DQ_IWARNS) + dst->d_fieldmask |= QC_INO_WARNS; + if (src->d_fieldmask & FS_DQ_RTBWARNS) + dst->d_fieldmask |= QC_RT_SPC_WARNS; + if (src->d_fieldmask & FS_DQ_BCOUNT) + dst->d_fieldmask |= QC_SPACE; + if (src->d_fieldmask & FS_DQ_ICOUNT) + dst->d_fieldmask |= QC_INO_COUNT; + if (src->d_fieldmask & FS_DQ_RTBCOUNT) + dst->d_fieldmask |= QC_RT_SPACE; +} + static int quota_setxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { struct fs_disk_quota fdq; + struct qc_dqblk qdq; struct kqid qid; if (copy_from_user(&fdq, addr, sizeof(fdq))) @@ -260,13 +371,44 @@ static int quota_setxquota(struct super_block *sb, int type, qid_t id, qid = make_kqid(current_user_ns(), type, id); if (!qid_valid(qid)) return -EINVAL; - return sb->s_qcop->set_dqblk(sb, qid, &fdq); + copy_from_xfs_dqblk(&qdq, &fdq); + return sb->s_qcop->set_dqblk(sb, qid, &qdq); +} + +static void copy_to_xfs_dqblk(struct fs_disk_quota *dst, struct qc_dqblk *src, + int type, qid_t id) +{ + memset(dst, 0, sizeof(*dst)); + dst->d_version = FS_DQUOT_VERSION; + dst->d_id = id; + if (type == USRQUOTA) + dst->d_flags = FS_USER_QUOTA; + else if (type == PRJQUOTA) + dst->d_flags = FS_PROJ_QUOTA; + else + dst->d_flags = FS_GROUP_QUOTA; + dst->d_blk_hardlimit = quota_btobb(src->d_spc_hardlimit); + dst->d_blk_softlimit = quota_btobb(src->d_spc_softlimit); + dst->d_ino_hardlimit = src->d_ino_hardlimit; + dst->d_ino_softlimit = src->d_ino_softlimit; + dst->d_bcount = quota_btobb(src->d_space); + dst->d_icount = src->d_ino_count; + dst->d_itimer = src->d_ino_timer; + dst->d_btimer = src->d_spc_timer; + dst->d_iwarns = src->d_ino_warns; + dst->d_bwarns = src->d_spc_warns; + dst->d_rtb_hardlimit = quota_btobb(src->d_rt_spc_hardlimit); + dst->d_rtb_softlimit = quota_btobb(src->d_rt_spc_softlimit); + dst->d_rtbcount = quota_btobb(src->d_rt_space); + dst->d_rtbtimer = src->d_rt_spc_timer; + dst->d_rtbwarns = src->d_rt_spc_warns; } static int quota_getxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { struct fs_disk_quota fdq; + struct qc_dqblk qdq; struct kqid qid; int ret; @@ -275,8 +417,11 @@ static int quota_getxquota(struct super_block *sb, int type, qid_t id, qid = make_kqid(current_user_ns(), type, id); if (!qid_valid(qid)) return -EINVAL; - ret = sb->s_qcop->get_dqblk(sb, qid, &fdq); - if (!ret && copy_to_user(addr, &fdq, sizeof(fdq))) + ret = sb->s_qcop->get_dqblk(sb, qid, &qdq); + if (ret) + return ret; + copy_to_xfs_dqblk(&fdq, &qdq, type, id); + if (copy_to_user(addr, &fdq, sizeof(fdq))) return -EFAULT; return ret; } @@ -317,9 +462,7 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, case Q_QUOTAON: return quota_quotaon(sb, type, cmd, id, path); case Q_QUOTAOFF: - if (!sb->s_qcop->quota_off) - return -ENOSYS; - return sb->s_qcop->quota_off(sb, type); + return quota_quotaoff(sb, type); case Q_GETFMT: return quota_getfmt(sb, type, addr); case Q_GETINFO: @@ -335,8 +478,9 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, return -ENOSYS; return sb->s_qcop->quota_sync(sb, type); case Q_XQUOTAON: + return quota_enable(sb, addr); case Q_XQUOTAOFF: - return quota_setxstate(sb, cmd, addr); + return quota_disable(sb, addr); case Q_XQUOTARM: return quota_rmxquota(sb, addr); case Q_XGETQSTAT: diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c index 469c684..8fe79be 100644 --- a/fs/quota/quota_v1.c +++ b/fs/quota/quota_v1.c @@ -169,8 +169,8 @@ static int v1_read_file_info(struct super_block *sb, int type) } ret = 0; /* limits are stored as unsigned 32-bit data */ - dqopt->info[type].dqi_maxblimit = 0xffffffff; - dqopt->info[type].dqi_maxilimit = 0xffffffff; + dqopt->info[type].dqi_max_spc_limit = 0xffffffffULL << QUOTABLOCK_BITS; + dqopt->info[type].dqi_max_ino_limit = 0xffffffff; dqopt->info[type].dqi_igrace = dqblk.dqb_itime ? dqblk.dqb_itime : MAX_IQ_TIME; dqopt->info[type].dqi_bgrace = diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c index 02751ec..9cb10d7 100644 --- a/fs/quota/quota_v2.c +++ b/fs/quota/quota_v2.c @@ -117,16 +117,17 @@ static int v2_read_file_info(struct super_block *sb, int type) qinfo = info->dqi_priv; if (version == 0) { /* limits are stored as unsigned 32-bit data */ - info->dqi_maxblimit = 0xffffffff; - info->dqi_maxilimit = 0xffffffff; + info->dqi_max_spc_limit = 0xffffffffULL << QUOTABLOCK_BITS; + info->dqi_max_ino_limit = 0xffffffff; } else { - /* used space is stored as unsigned 64-bit value */ - info->dqi_maxblimit = 0xffffffffffffffffULL; /* 2^64-1 */ - info->dqi_maxilimit = 0xffffffffffffffffULL; + /* used space is stored as unsigned 64-bit value in bytes */ + info->dqi_max_spc_limit = 0xffffffffffffffffULL; /* 2^64-1 */ + info->dqi_max_ino_limit = 0xffffffffffffffffULL; } info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); - info->dqi_flags = le32_to_cpu(dinfo.dqi_flags); + /* No flags currently supported */ + info->dqi_flags = 0; qinfo->dqi_sb = sb; qinfo->dqi_type = type; qinfo->dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); @@ -157,7 +158,8 @@ static int v2_write_file_info(struct super_block *sb, int type) info->dqi_flags &= ~DQF_INFO_DIRTY; dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); - dinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); + /* No flags currently supported */ + dinfo.dqi_flags = cpu_to_le32(0); spin_unlock(&dq_data_lock); dinfo.dqi_blocks = cpu_to_le32(qinfo->dqi_blocks); dinfo.dqi_free_blk = cpu_to_le32(qinfo->dqi_free_blk); diff --git a/fs/read_write.c b/fs/read_write.c index c0805c9..4060691 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -358,7 +358,7 @@ int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t return retval; } - if (unlikely(inode->i_flock && mandatory_lock(inode))) { + if (unlikely(inode->i_flctx && mandatory_lock(inode))) { retval = locks_mandatory_area( read_write == READ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE, inode, file, pos, count); diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 538519e..035e510 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1536,7 +1536,6 @@ static const struct vm_operations_struct ubifs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = ubifs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig index 0e0e99b..c6e17a7 100644 --- a/fs/udf/Kconfig +++ b/fs/udf/Kconfig @@ -2,10 +2,12 @@ config UDF_FS tristate "UDF file system support" select CRC_ITU_T help - This is the new file system used on some CD-ROMs and DVDs. Say Y if - you intend to mount DVD discs or CDRW's written in packet mode, or - if written to by other UDF utilities, such as DirectCD. - Please read <file:Documentation/filesystems/udf.txt>. + This is a file system used on some CD-ROMs and DVDs. Since the + file system is supported by multiple operating systems and is more + compatible with standard unix file systems, it is also suitable for + removable USB disks. Say Y if you intend to mount DVD discs or CDRW's + written in packet mode, or if you want to use UDF for removable USB + disks. Please read <file:Documentation/filesystems/udf.txt>. To compile this file system support as a module, choose M here: the module will be called udf. diff --git a/fs/udf/file.c b/fs/udf/file.c index bb15771..08f3555 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -224,7 +224,7 @@ out: static int udf_release_file(struct inode *inode, struct file *filp) { if (filp->f_mode & FMODE_WRITE && - atomic_read(&inode->i_writecount) > 1) { + atomic_read(&inode->i_writecount) == 1) { /* * Grab i_mutex to avoid races with writes changing i_size * while we are running. diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 5bc71d9..a445d59 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -750,7 +750,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, /* Are we beyond EOF? */ if (etype == -1) { int ret; - isBeyondEOF = 1; + isBeyondEOF = true; if (count) { if (c) laarr[0] = laarr[1]; @@ -792,7 +792,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, endnum = c + 1; lastblock = 1; } else { - isBeyondEOF = 0; + isBeyondEOF = false; endnum = startnum = ((count > 2) ? 2 : count); /* if the current extent is in position 0, @@ -1288,6 +1288,7 @@ static int udf_read_inode(struct inode *inode, bool hidden_inode) struct kernel_lb_addr *iloc = &iinfo->i_location; unsigned int link_count; unsigned int indirections = 0; + int bs = inode->i_sb->s_blocksize; int ret = -EIO; reread: @@ -1374,38 +1375,35 @@ reread: if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) { iinfo->i_efe = 1; iinfo->i_use = 0; - ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - + ret = udf_alloc_i_data(inode, bs - sizeof(struct extendedFileEntry)); if (ret) goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct extendedFileEntry), - inode->i_sb->s_blocksize - - sizeof(struct extendedFileEntry)); + bs - sizeof(struct extendedFileEntry)); } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) { iinfo->i_efe = 0; iinfo->i_use = 0; - ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - - sizeof(struct fileEntry)); + ret = udf_alloc_i_data(inode, bs - sizeof(struct fileEntry)); if (ret) goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct fileEntry), - inode->i_sb->s_blocksize - sizeof(struct fileEntry)); + bs - sizeof(struct fileEntry)); } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { iinfo->i_efe = 0; iinfo->i_use = 1; iinfo->i_lenAlloc = le32_to_cpu( ((struct unallocSpaceEntry *)bh->b_data)-> lengthAllocDescs); - ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - + ret = udf_alloc_i_data(inode, bs - sizeof(struct unallocSpaceEntry)); if (ret) goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct unallocSpaceEntry), - inode->i_sb->s_blocksize - - sizeof(struct unallocSpaceEntry)); + bs - sizeof(struct unallocSpaceEntry)); return 0; } @@ -1489,6 +1487,15 @@ reread: } inode->i_generation = iinfo->i_unique; + /* + * Sanity check length of allocation descriptors and extended attrs to + * avoid integer overflows + */ + if (iinfo->i_lenEAttr > bs || iinfo->i_lenAlloc > bs) + goto out; + /* Now do exact checks */ + if (udf_file_entry_alloc_offset(inode) + iinfo->i_lenAlloc > bs) + goto out; /* Sanity checks for files in ICB so that we don't get confused later */ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { /* @@ -1498,8 +1505,7 @@ reread: if (iinfo->i_lenAlloc != inode->i_size) goto out; /* File in ICB has to fit in there... */ - if (inode->i_size > inode->i_sb->s_blocksize - - udf_file_entry_alloc_offset(inode)) + if (inode->i_size > bs - udf_file_entry_alloc_offset(inode)) goto out; } diff --git a/fs/udf/super.c b/fs/udf/super.c index 3ccb2f1..f169411 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1599,7 +1599,7 @@ static noinline int udf_process_sequence( struct udf_vds_record *curr; struct generic_desc *gd; struct volDescPtr *vdp; - int done = 0; + bool done = false; uint32_t vdsn; uint16_t ident; long next_s = 0, next_e = 0; @@ -1680,7 +1680,7 @@ static noinline int udf_process_sequence( lastblock = next_e; next_s = next_e = 0; } else - done = 1; + done = true; break; } brelse(bh); @@ -2300,6 +2300,7 @@ static void udf_put_super(struct super_block *sb) udf_close_lvid(sb); brelse(sbi->s_lvid_bh); udf_sb_free_partitions(sb); + mutex_destroy(&sbi->s_alloc_mutex); kfree(sb->s_fs_info); sb->s_fs_info = NULL; } diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index 53e95b2..a7a3a63 100644 --- a/fs/xfs/kmem.c +++ b/fs/xfs/kmem.c @@ -91,16 +91,6 @@ kmem_zalloc_large(size_t size, xfs_km_flags_t flags) return ptr; } -void -kmem_free(const void *ptr) -{ - if (!is_vmalloc_addr(ptr)) { - kfree(ptr); - } else { - vfree(ptr); - } -} - void * kmem_realloc(const void *ptr, size_t newsize, size_t oldsize, xfs_km_flags_t flags) diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h index 64db0e5..cc6b768 100644 --- a/fs/xfs/kmem.h +++ b/fs/xfs/kmem.h @@ -63,7 +63,10 @@ kmem_flags_convert(xfs_km_flags_t flags) extern void *kmem_alloc(size_t, xfs_km_flags_t); extern void *kmem_zalloc_large(size_t size, xfs_km_flags_t); extern void *kmem_realloc(const void *, size_t, size_t, xfs_km_flags_t); -extern void kmem_free(const void *); +static inline void kmem_free(const void *ptr) +{ + kvfree(ptr); +} extern void *kmem_zalloc_greedy(size_t *, size_t, size_t); diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index 5d38e8b..15105db 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -403,7 +403,7 @@ xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp) if (!xfs_sb_version_hasattr2(&mp->m_sb)) { xfs_sb_version_addattr2(&mp->m_sb); spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, XFS_SB_VERSIONNUM | XFS_SB_FEATURES2); + xfs_log_sb(tp); } else spin_unlock(&mp->m_sb_lock); } diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index b5eb474..61ec015 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -973,7 +973,11 @@ xfs_bmap_local_to_extents( *firstblock = args.fsbno; bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); - /* initialise the block and copy the data */ + /* + * Initialise the block and copy the data + * + * Note: init_fn must set the buffer log item type correctly! + */ init_fn(tp, bp, ip, ifp); /* account for the change in fork size and log everything */ @@ -1221,22 +1225,20 @@ xfs_bmap_add_attrfork( goto bmap_cancel; if (!xfs_sb_version_hasattr(&mp->m_sb) || (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { - __int64_t sbfields = 0; + bool log_sb = false; spin_lock(&mp->m_sb_lock); if (!xfs_sb_version_hasattr(&mp->m_sb)) { xfs_sb_version_addattr(&mp->m_sb); - sbfields |= XFS_SB_VERSIONNUM; + log_sb = true; } if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { xfs_sb_version_addattr2(&mp->m_sb); - sbfields |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2); + log_sb = true; } - if (sbfields) { - spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, sbfields); - } else - spin_unlock(&mp->m_sb_lock); + spin_unlock(&mp->m_sb_lock); + if (log_sb) + xfs_log_sb(tp); } error = xfs_bmap_finish(&tp, &flist, &committed); diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index 44db6db..b9d8a49 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -28,6 +28,37 @@ struct xfs_trans; extern kmem_zone_t *xfs_bmap_free_item_zone; /* + * Argument structure for xfs_bmap_alloc. + */ +struct xfs_bmalloca { + xfs_fsblock_t *firstblock; /* i/o first block allocated */ + struct xfs_bmap_free *flist; /* bmap freelist */ + struct xfs_trans *tp; /* transaction pointer */ + struct xfs_inode *ip; /* incore inode pointer */ + struct xfs_bmbt_irec prev; /* extent before the new one */ + struct xfs_bmbt_irec got; /* extent after, or delayed */ + + xfs_fileoff_t offset; /* offset in file filling in */ + xfs_extlen_t length; /* i/o length asked/allocated */ + xfs_fsblock_t blkno; /* starting block of new extent */ + + struct xfs_btree_cur *cur; /* btree cursor */ + xfs_extnum_t idx; /* current extent index */ + int nallocs;/* number of extents alloc'd */ + int logflags;/* flags for transaction logging */ + + xfs_extlen_t total; /* total blocks needed for xaction */ + xfs_extlen_t minlen; /* minimum allocation size (blocks) */ + xfs_extlen_t minleft; /* amount must be left after alloc */ + bool eof; /* set if allocating past last extent */ + bool wasdel; /* replacing a delayed allocation */ + bool userdata;/* set if is user data */ + bool aeof; /* allocated space at eof */ + bool conv; /* overwriting unwritten extents */ + int flags; +}; + +/* * List of extents to be free "later". * The list is kept sorted on xbf_startblock. */ @@ -149,6 +180,8 @@ void xfs_bmap_local_to_extents_empty(struct xfs_inode *ip, int whichfork); void xfs_bmap_add_free(xfs_fsblock_t bno, xfs_filblks_t len, struct xfs_bmap_free *flist, struct xfs_mount *mp); void xfs_bmap_cancel(struct xfs_bmap_free *flist); +int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, + int *committed); void xfs_bmap_compute_maxlevels(struct xfs_mount *mp, int whichfork); int xfs_bmap_first_unused(struct xfs_trans *tp, struct xfs_inode *ip, xfs_extlen_t len, xfs_fileoff_t *unused, int whichfork); diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index fbd6da2..8eb7189 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -151,10 +151,13 @@ typedef struct xfs_sb { __uint32_t sb_features2; /* additional feature bits */ /* - * bad features2 field as a result of failing to pad the sb - * structure to 64 bits. Some machines will be using this field - * for features2 bits. Easiest just to mark it bad and not use - * it for anything else. + * bad features2 field as a result of failing to pad the sb structure to + * 64 bits. Some machines will be using this field for features2 bits. + * Easiest just to mark it bad and not use it for anything else. + * + * This is not kept up to date in memory; it is always overwritten by + * the value in sb_features2 when formatting the incore superblock to + * the disk buffer. */ __uint32_t sb_bad_features2; @@ -304,8 +307,8 @@ typedef enum { #define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT) #define XFS_SB_IFREE XFS_SB_MVAL(IFREE) #define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS) -#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2) -#define XFS_SB_BAD_FEATURES2 XFS_SB_MVAL(BAD_FEATURES2) +#define XFS_SB_FEATURES2 (XFS_SB_MVAL(FEATURES2) | \ + XFS_SB_MVAL(BAD_FEATURES2)) #define XFS_SB_FEATURES_COMPAT XFS_SB_MVAL(FEATURES_COMPAT) #define XFS_SB_FEATURES_RO_COMPAT XFS_SB_MVAL(FEATURES_RO_COMPAT) #define XFS_SB_FEATURES_INCOMPAT XFS_SB_MVAL(FEATURES_INCOMPAT) @@ -319,9 +322,9 @@ typedef enum { XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \ XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \ XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \ - XFS_SB_BAD_FEATURES2 | XFS_SB_FEATURES_COMPAT | \ - XFS_SB_FEATURES_RO_COMPAT | XFS_SB_FEATURES_INCOMPAT | \ - XFS_SB_FEATURES_LOG_INCOMPAT | XFS_SB_PQUOTINO) + XFS_SB_FEATURES_COMPAT | XFS_SB_FEATURES_RO_COMPAT | \ + XFS_SB_FEATURES_INCOMPAT | XFS_SB_FEATURES_LOG_INCOMPAT | \ + XFS_SB_PQUOTINO) /* @@ -453,13 +456,11 @@ static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp) { sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT; - sbp->sb_bad_features2 |= XFS_SB_VERSION2_ATTR2BIT; } static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp) { sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT; - sbp->sb_bad_features2 &= ~XFS_SB_VERSION2_ATTR2BIT; if (!sbp->sb_features2) sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT; } @@ -475,7 +476,6 @@ static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp) { sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT; sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT; - sbp->sb_bad_features2 |= XFS_SB_VERSION2_PROJID32BIT; } /* diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 18dc721..18dc721 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 752915f..b0a5fe9 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -40,69 +40,6 @@ * Physical superblock buffer manipulations. Shared with libxfs in userspace. */ -static const struct { - short offset; - short type; /* 0 = integer - * 1 = binary / string (no translation) - */ -} xfs_sb_info[] = { - { offsetof(xfs_sb_t, sb_magicnum), 0 }, - { offsetof(xfs_sb_t, sb_blocksize), 0 }, - { offsetof(xfs_sb_t, sb_dblocks), 0 }, - { offsetof(xfs_sb_t, sb_rblocks), 0 }, - { offsetof(xfs_sb_t, sb_rextents), 0 }, - { offsetof(xfs_sb_t, sb_uuid), 1 }, - { offsetof(xfs_sb_t, sb_logstart), 0 }, - { offsetof(xfs_sb_t, sb_rootino), 0 }, - { offsetof(xfs_sb_t, sb_rbmino), 0 }, - { offsetof(xfs_sb_t, sb_rsumino), 0 }, - { offsetof(xfs_sb_t, sb_rextsize), 0 }, - { offsetof(xfs_sb_t, sb_agblocks), 0 }, - { offsetof(xfs_sb_t, sb_agcount), 0 }, - { offsetof(xfs_sb_t, sb_rbmblocks), 0 }, - { offsetof(xfs_sb_t, sb_logblocks), 0 }, - { offsetof(xfs_sb_t, sb_versionnum), 0 }, - { offsetof(xfs_sb_t, sb_sectsize), 0 }, - { offsetof(xfs_sb_t, sb_inodesize), 0 }, - { offsetof(xfs_sb_t, sb_inopblock), 0 }, - { offsetof(xfs_sb_t, sb_fname[0]), 1 }, - { offsetof(xfs_sb_t, sb_blocklog), 0 }, - { offsetof(xfs_sb_t, sb_sectlog), 0 }, - { offsetof(xfs_sb_t, sb_inodelog), 0 }, - { offsetof(xfs_sb_t, sb_inopblog), 0 }, - { offsetof(xfs_sb_t, sb_agblklog), 0 }, - { offsetof(xfs_sb_t, sb_rextslog), 0 }, - { offsetof(xfs_sb_t, sb_inprogress), 0 }, - { offsetof(xfs_sb_t, sb_imax_pct), 0 }, - { offsetof(xfs_sb_t, sb_icount), 0 }, - { offsetof(xfs_sb_t, sb_ifree), 0 }, - { offsetof(xfs_sb_t, sb_fdblocks), 0 }, - { offsetof(xfs_sb_t, sb_frextents), 0 }, - { offsetof(xfs_sb_t, sb_uquotino), 0 }, - { offsetof(xfs_sb_t, sb_gquotino), 0 }, - { offsetof(xfs_sb_t, sb_qflags), 0 }, - { offsetof(xfs_sb_t, sb_flags), 0 }, - { offsetof(xfs_sb_t, sb_shared_vn), 0 }, - { offsetof(xfs_sb_t, sb_inoalignmt), 0 }, - { offsetof(xfs_sb_t, sb_unit), 0 }, - { offsetof(xfs_sb_t, sb_width), 0 }, - { offsetof(xfs_sb_t, sb_dirblklog), 0 }, - { offsetof(xfs_sb_t, sb_logsectlog), 0 }, - { offsetof(xfs_sb_t, sb_logsectsize), 0 }, - { offsetof(xfs_sb_t, sb_logsunit), 0 }, - { offsetof(xfs_sb_t, sb_features2), 0 }, - { offsetof(xfs_sb_t, sb_bad_features2), 0 }, - { offsetof(xfs_sb_t, sb_features_compat), 0 }, - { offsetof(xfs_sb_t, sb_features_ro_compat), 0 }, - { offsetof(xfs_sb_t, sb_features_incompat), 0 }, - { offsetof(xfs_sb_t, sb_features_log_incompat), 0 }, - { offsetof(xfs_sb_t, sb_crc), 0 }, - { offsetof(xfs_sb_t, sb_pad), 0 }, - { offsetof(xfs_sb_t, sb_pquotino), 0 }, - { offsetof(xfs_sb_t, sb_lsn), 0 }, - { sizeof(xfs_sb_t), 0 } -}; - /* * Reference counting access wrappers to the perag structures. * Because we never free per-ag structures, the only thing we @@ -461,58 +398,49 @@ xfs_sb_from_disk( __xfs_sb_from_disk(to, from, true); } -static inline void +static void xfs_sb_quota_to_disk( - xfs_dsb_t *to, - xfs_sb_t *from, - __int64_t *fields) + struct xfs_dsb *to, + struct xfs_sb *from) { __uint16_t qflags = from->sb_qflags; + to->sb_uquotino = cpu_to_be64(from->sb_uquotino); + if (xfs_sb_version_has_pquotino(from)) { + to->sb_qflags = cpu_to_be16(from->sb_qflags); + to->sb_gquotino = cpu_to_be64(from->sb_gquotino); + to->sb_pquotino = cpu_to_be64(from->sb_pquotino); + return; + } + /* - * We need to do these manipilations only if we are working - * with an older version of on-disk superblock. + * The in-core version of sb_qflags do not have XFS_OQUOTA_* + * flags, whereas the on-disk version does. So, convert incore + * XFS_{PG}QUOTA_* flags to on-disk XFS_OQUOTA_* flags. */ - if (xfs_sb_version_has_pquotino(from)) - return; + qflags &= ~(XFS_PQUOTA_ENFD | XFS_PQUOTA_CHKD | + XFS_GQUOTA_ENFD | XFS_GQUOTA_CHKD); - if (*fields & XFS_SB_QFLAGS) { - /* - * The in-core version of sb_qflags do not have - * XFS_OQUOTA_* flags, whereas the on-disk version - * does. So, convert incore XFS_{PG}QUOTA_* flags - * to on-disk XFS_OQUOTA_* flags. - */ - qflags &= ~(XFS_PQUOTA_ENFD | XFS_PQUOTA_CHKD | - XFS_GQUOTA_ENFD | XFS_GQUOTA_CHKD); - - if (from->sb_qflags & - (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD)) - qflags |= XFS_OQUOTA_ENFD; - if (from->sb_qflags & - (XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) - qflags |= XFS_OQUOTA_CHKD; - to->sb_qflags = cpu_to_be16(qflags); - *fields &= ~XFS_SB_QFLAGS; - } + if (from->sb_qflags & + (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD)) + qflags |= XFS_OQUOTA_ENFD; + if (from->sb_qflags & + (XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) + qflags |= XFS_OQUOTA_CHKD; + to->sb_qflags = cpu_to_be16(qflags); /* - * GQUOTINO and PQUOTINO cannot be used together in versions of - * superblock that do not have pquotino. from->sb_flags tells us which - * quota is active and should be copied to disk. If neither are active, - * make sure we write NULLFSINO to the sb_gquotino field as a quota - * inode value of "0" is invalid when the XFS_SB_VERSION_QUOTA feature - * bit is set. + * GQUOTINO and PQUOTINO cannot be used together in versions + * of superblock that do not have pquotino. from->sb_flags + * tells us which quota is active and should be copied to + * disk. If neither are active, we should NULL the inode. * - * Note that we don't need to handle the sb_uquotino or sb_pquotino here - * as they do not require any translation. Hence the main sb field loop - * will write them appropriately from the in-core superblock. + * In all cases, the separate pquotino must remain 0 because it + * it beyond the "end" of the valid non-pquotino superblock. */ - if ((*fields & XFS_SB_GQUOTINO) && - (from->sb_qflags & XFS_GQUOTA_ACCT)) + if (from->sb_qflags & XFS_GQUOTA_ACCT) to->sb_gquotino = cpu_to_be64(from->sb_gquotino); - else if ((*fields & XFS_SB_PQUOTINO) && - (from->sb_qflags & XFS_PQUOTA_ACCT)) + else if (from->sb_qflags & XFS_PQUOTA_ACCT) to->sb_gquotino = cpu_to_be64(from->sb_pquotino); else { /* @@ -526,63 +454,78 @@ xfs_sb_quota_to_disk( to->sb_gquotino = cpu_to_be64(NULLFSINO); } - *fields &= ~(XFS_SB_PQUOTINO | XFS_SB_GQUOTINO); + to->sb_pquotino = 0; } -/* - * Copy in core superblock to ondisk one. - * - * The fields argument is mask of superblock fields to copy. - */ void xfs_sb_to_disk( - xfs_dsb_t *to, - xfs_sb_t *from, - __int64_t fields) + struct xfs_dsb *to, + struct xfs_sb *from) { - xfs_caddr_t to_ptr = (xfs_caddr_t)to; - xfs_caddr_t from_ptr = (xfs_caddr_t)from; - xfs_sb_field_t f; - int first; - int size; - - ASSERT(fields); - if (!fields) - return; + xfs_sb_quota_to_disk(to, from); - /* We should never write the crc here, it's updated in the IO path */ - fields &= ~XFS_SB_CRC; - - xfs_sb_quota_to_disk(to, from, &fields); - while (fields) { - f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); - first = xfs_sb_info[f].offset; - size = xfs_sb_info[f + 1].offset - first; - - ASSERT(xfs_sb_info[f].type == 0 || xfs_sb_info[f].type == 1); - - if (size == 1 || xfs_sb_info[f].type == 1) { - memcpy(to_ptr + first, from_ptr + first, size); - } else { - switch (size) { - case 2: - *(__be16 *)(to_ptr + first) = - cpu_to_be16(*(__u16 *)(from_ptr + first)); - break; - case 4: - *(__be32 *)(to_ptr + first) = - cpu_to_be32(*(__u32 *)(from_ptr + first)); - break; - case 8: - *(__be64 *)(to_ptr + first) = - cpu_to_be64(*(__u64 *)(from_ptr + first)); - break; - default: - ASSERT(0); - } - } + to->sb_magicnum = cpu_to_be32(from->sb_magicnum); + to->sb_blocksize = cpu_to_be32(from->sb_blocksize); + to->sb_dblocks = cpu_to_be64(from->sb_dblocks); + to->sb_rblocks = cpu_to_be64(from->sb_rblocks); + to->sb_rextents = cpu_to_be64(from->sb_rextents); + memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid)); + to->sb_logstart = cpu_to_be64(from->sb_logstart); + to->sb_rootino = cpu_to_be64(from->sb_rootino); + to->sb_rbmino = cpu_to_be64(from->sb_rbmino); + to->sb_rsumino = cpu_to_be64(from->sb_rsumino); + to->sb_rextsize = cpu_to_be32(from->sb_rextsize); + to->sb_agblocks = cpu_to_be32(from->sb_agblocks); + to->sb_agcount = cpu_to_be32(from->sb_agcount); + to->sb_rbmblocks = cpu_to_be32(from->sb_rbmblocks); + to->sb_logblocks = cpu_to_be32(from->sb_logblocks); + to->sb_versionnum = cpu_to_be16(from->sb_versionnum); + to->sb_sectsize = cpu_to_be16(from->sb_sectsize); + to->sb_inodesize = cpu_to_be16(from->sb_inodesize); + to->sb_inopblock = cpu_to_be16(from->sb_inopblock); + memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname)); + to->sb_blocklog = from->sb_blocklog; + to->sb_sectlog = from->sb_sectlog; + to->sb_inodelog = from->sb_inodelog; + to->sb_inopblog = from->sb_inopblog; + to->sb_agblklog = from->sb_agblklog; + to->sb_rextslog = from->sb_rextslog; + to->sb_inprogress = from->sb_inprogress; + to->sb_imax_pct = from->sb_imax_pct; + to->sb_icount = cpu_to_be64(from->sb_icount); + to->sb_ifree = cpu_to_be64(from->sb_ifree); + to->sb_fdblocks = cpu_to_be64(from->sb_fdblocks); + to->sb_frextents = cpu_to_be64(from->sb_frextents); - fields &= ~(1LL << f); + to->sb_flags = from->sb_flags; + to->sb_shared_vn = from->sb_shared_vn; + to->sb_inoalignmt = cpu_to_be32(from->sb_inoalignmt); + to->sb_unit = cpu_to_be32(from->sb_unit); + to->sb_width = cpu_to_be32(from->sb_width); + to->sb_dirblklog = from->sb_dirblklog; + to->sb_logsectlog = from->sb_logsectlog; + to->sb_logsectsize = cpu_to_be16(from->sb_logsectsize); + to->sb_logsunit = cpu_to_be32(from->sb_logsunit); + + /* + * We need to ensure that bad_features2 always matches features2. + * Hence we enforce that here rather than having to remember to do it + * everywhere else that updates features2. + */ + from->sb_bad_features2 = from->sb_features2; + to->sb_features2 = cpu_to_be32(from->sb_features2); + to->sb_bad_features2 = cpu_to_be32(from->sb_bad_features2); + + if (xfs_sb_version_hascrc(from)) { + to->sb_features_compat = cpu_to_be32(from->sb_features_compat); + to->sb_features_ro_compat = + cpu_to_be32(from->sb_features_ro_compat); + to->sb_features_incompat = + cpu_to_be32(from->sb_features_incompat); + to->sb_features_log_incompat = + cpu_to_be32(from->sb_features_log_incompat); + to->sb_pad = 0; + to->sb_lsn = cpu_to_be64(from->sb_lsn); } } @@ -816,42 +759,51 @@ xfs_initialize_perag_data( } /* - * xfs_mod_sb() can be used to copy arbitrary changes to the - * in-core superblock into the superblock buffer to be logged. - * It does not provide the higher level of locking that is - * needed to protect the in-core superblock from concurrent - * access. + * xfs_log_sb() can be used to copy arbitrary changes to the in-core superblock + * into the superblock buffer to be logged. It does not provide the higher + * level of locking that is needed to protect the in-core superblock from + * concurrent access. */ void -xfs_mod_sb(xfs_trans_t *tp, __int64_t fields) +xfs_log_sb( + struct xfs_trans *tp) { - xfs_buf_t *bp; - int first; - int last; - xfs_mount_t *mp; - xfs_sb_field_t f; - - ASSERT(fields); - if (!fields) - return; - mp = tp->t_mountp; - bp = xfs_trans_getsb(tp, mp, 0); - first = sizeof(xfs_sb_t); - last = 0; - - /* translate/copy */ + struct xfs_mount *mp = tp->t_mountp; + struct xfs_buf *bp = xfs_trans_getsb(tp, mp, 0); - xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields); + xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); + xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); + xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsb)); +} - /* find modified range */ - f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - last = xfs_sb_info[f + 1].offset - 1; +/* + * xfs_sync_sb + * + * Sync the superblock to disk. + * + * Note that the caller is responsible for checking the frozen state of the + * filesystem. This procedure uses the non-blocking transaction allocator and + * thus will allow modifications to a frozen fs. This is required because this + * code can be called during the process of freezing where use of the high-level + * allocator would deadlock. + */ +int +xfs_sync_sb( + struct xfs_mount *mp, + bool wait) +{ + struct xfs_trans *tp; + int error; - f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - first = xfs_sb_info[f].offset; + tp = _xfs_trans_alloc(mp, XFS_TRANS_SB_CHANGE, KM_SLEEP); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return error; + } - xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); - xfs_trans_log_buf(tp, bp, first, last); + xfs_log_sb(tp); + if (wait) + xfs_trans_set_sync(tp); + return xfs_trans_commit(tp, 0); } diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h index 8eb1c54..b25bb9a 100644 --- a/fs/xfs/libxfs/xfs_sb.h +++ b/fs/xfs/libxfs/xfs_sb.h @@ -27,11 +27,12 @@ extern struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *, xfs_agnumber_t, extern void xfs_perag_put(struct xfs_perag *pag); extern int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t); -extern void xfs_sb_calc_crc(struct xfs_buf *); -extern void xfs_mod_sb(struct xfs_trans *, __int64_t); -extern void xfs_sb_mount_common(struct xfs_mount *, struct xfs_sb *); -extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); -extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); +extern void xfs_sb_calc_crc(struct xfs_buf *bp); +extern void xfs_log_sb(struct xfs_trans *tp); +extern int xfs_sync_sb(struct xfs_mount *mp, bool wait); +extern void xfs_sb_mount_common(struct xfs_mount *mp, struct xfs_sb *sbp); +extern void xfs_sb_from_disk(struct xfs_sb *to, struct xfs_dsb *from); +extern void xfs_sb_to_disk(struct xfs_dsb *to, struct xfs_sb *from); extern void xfs_sb_quota_from_disk(struct xfs_sb *sbp); #endif /* __XFS_SB_H__ */ diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h index 82404da..8dda4b3 100644 --- a/fs/xfs/libxfs/xfs_shared.h +++ b/fs/xfs/libxfs/xfs_shared.h @@ -82,7 +82,7 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; #define XFS_TRANS_ATTR_RM 23 #define XFS_TRANS_ATTR_FLAG 24 #define XFS_TRANS_CLEAR_AGI_BUCKET 25 -#define XFS_TRANS_QM_SBCHANGE 26 +#define XFS_TRANS_SB_CHANGE 26 /* * Dummy entries since we use the transaction type to index into the * trans_type[] in xlog_recover_print_trans_head() @@ -95,17 +95,15 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; #define XFS_TRANS_QM_DQCLUSTER 32 #define XFS_TRANS_QM_QINOCREATE 33 #define XFS_TRANS_QM_QUOTAOFF_END 34 -#define XFS_TRANS_SB_UNIT 35 -#define XFS_TRANS_FSYNC_TS 36 -#define XFS_TRANS_GROWFSRT_ALLOC 37 -#define XFS_TRANS_GROWFSRT_ZERO 38 -#define XFS_TRANS_GROWFSRT_FREE 39 -#define XFS_TRANS_SWAPEXT 40 -#define XFS_TRANS_SB_COUNT 41 -#define XFS_TRANS_CHECKPOINT 42 -#define XFS_TRANS_ICREATE 43 -#define XFS_TRANS_CREATE_TMPFILE 44 -#define XFS_TRANS_TYPE_MAX 44 +#define XFS_TRANS_FSYNC_TS 35 +#define XFS_TRANS_GROWFSRT_ALLOC 36 +#define XFS_TRANS_GROWFSRT_ZERO 37 +#define XFS_TRANS_GROWFSRT_FREE 38 +#define XFS_TRANS_SWAPEXT 39 +#define XFS_TRANS_CHECKPOINT 40 +#define XFS_TRANS_ICREATE 41 +#define XFS_TRANS_CREATE_TMPFILE 42 +#define XFS_TRANS_TYPE_MAX 43 /* new transaction types need to be reflected in xfs_logprint(8) */ #define XFS_TRANS_TYPES \ @@ -113,7 +111,6 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \ { XFS_TRANS_INACTIVE, "INACTIVE" }, \ { XFS_TRANS_CREATE, "CREATE" }, \ - { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \ { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \ { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \ { XFS_TRANS_REMOVE, "REMOVE" }, \ @@ -134,23 +131,23 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \ { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \ { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \ - { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \ + { XFS_TRANS_SB_CHANGE, "SBCHANGE" }, \ + { XFS_TRANS_DUMMY1, "DUMMY1" }, \ + { XFS_TRANS_DUMMY2, "DUMMY2" }, \ { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \ { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \ { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \ { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \ { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \ { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \ - { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \ { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \ { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \ { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \ { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \ { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \ - { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \ { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \ - { XFS_TRANS_DUMMY1, "DUMMY1" }, \ - { XFS_TRANS_DUMMY2, "DUMMY2" }, \ + { XFS_TRANS_ICREATE, "ICREATE" }, \ + { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \ { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" } /* diff --git a/fs/xfs/libxfs/xfs_symlink_remote.c b/fs/xfs/libxfs/xfs_symlink_remote.c index c80c523..e7e26bd 100644 --- a/fs/xfs/libxfs/xfs_symlink_remote.c +++ b/fs/xfs/libxfs/xfs_symlink_remote.c @@ -178,6 +178,8 @@ xfs_symlink_local_to_remote( struct xfs_mount *mp = ip->i_mount; char *buf; + xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SYMLINK_BUF); + if (!xfs_sb_version_hascrc(&mp->m_sb)) { bp->b_ops = NULL; memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes); diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c index 6c1330f..68cb1e7 100644 --- a/fs/xfs/libxfs/xfs_trans_resv.c +++ b/fs/xfs/libxfs/xfs_trans_resv.c @@ -716,17 +716,6 @@ xfs_calc_clear_agi_bucket_reservation( } /* - * Clearing the quotaflags in the superblock. - * the super block for changing quota flags: sector size - */ -STATIC uint -xfs_calc_qm_sbchange_reservation( - struct xfs_mount *mp) -{ - return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); -} - -/* * Adjusting quota limits. * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) */ @@ -864,9 +853,6 @@ xfs_trans_resv_calc( * The following transactions are logged in logical format with * a default log count. */ - resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp); - resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT; - resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; diff --git a/fs/xfs/libxfs/xfs_trans_resv.h b/fs/xfs/libxfs/xfs_trans_resv.h index 1097d14..2d5bdfc 100644 --- a/fs/xfs/libxfs/xfs_trans_resv.h +++ b/fs/xfs/libxfs/xfs_trans_resv.h @@ -56,7 +56,6 @@ struct xfs_trans_resv { struct xfs_trans_res tr_growrtalloc; /* grow realtime allocations */ struct xfs_trans_res tr_growrtzero; /* grow realtime zeroing */ struct xfs_trans_res tr_growrtfree; /* grow realtime freeing */ - struct xfs_trans_res tr_qm_sbchange; /* change quota flags */ struct xfs_trans_res tr_qm_setqlim; /* adjust quota limits */ struct xfs_trans_res tr_qm_dqalloc; /* allocate quota on disk */ struct xfs_trans_res tr_qm_quotaoff; /* turn quota off */ diff --git a/fs/xfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h index b79dc66..b79dc66 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/libxfs/xfs_types.h diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 18e2f3b..3a9b7a1 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -135,30 +135,22 @@ xfs_setfilesize_trans_alloc( */ STATIC int xfs_setfilesize( - struct xfs_ioend *ioend) + struct xfs_inode *ip, + struct xfs_trans *tp, + xfs_off_t offset, + size_t size) { - struct xfs_inode *ip = XFS_I(ioend->io_inode); - struct xfs_trans *tp = ioend->io_append_trans; xfs_fsize_t isize; - /* - * The transaction may have been allocated in the I/O submission thread, - * thus we need to mark ourselves as beeing in a transaction manually. - * Similarly for freeze protection. - */ - current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); - rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1], - 0, 1, _THIS_IP_); - xfs_ilock(ip, XFS_ILOCK_EXCL); - isize = xfs_new_eof(ip, ioend->io_offset + ioend->io_size); + isize = xfs_new_eof(ip, offset + size); if (!isize) { xfs_iunlock(ip, XFS_ILOCK_EXCL); xfs_trans_cancel(tp, 0); return 0; } - trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size); + trace_xfs_setfilesize(ip, offset, size); ip->i_d.di_size = isize; xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); @@ -167,6 +159,25 @@ xfs_setfilesize( return xfs_trans_commit(tp, 0); } +STATIC int +xfs_setfilesize_ioend( + struct xfs_ioend *ioend) +{ + struct xfs_inode *ip = XFS_I(ioend->io_inode); + struct xfs_trans *tp = ioend->io_append_trans; + + /* + * The transaction may have been allocated in the I/O submission thread, + * thus we need to mark ourselves as being in a transaction manually. + * Similarly for freeze protection. + */ + current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); + rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1], + 0, 1, _THIS_IP_); + + return xfs_setfilesize(ip, tp, ioend->io_offset, ioend->io_size); +} + /* * Schedule IO completion handling on the final put of an ioend. * @@ -182,8 +193,7 @@ xfs_finish_ioend( if (ioend->io_type == XFS_IO_UNWRITTEN) queue_work(mp->m_unwritten_workqueue, &ioend->io_work); - else if (ioend->io_append_trans || - (ioend->io_isdirect && xfs_ioend_is_append(ioend))) + else if (ioend->io_append_trans) queue_work(mp->m_data_workqueue, &ioend->io_work); else xfs_destroy_ioend(ioend); @@ -215,22 +225,8 @@ xfs_end_io( if (ioend->io_type == XFS_IO_UNWRITTEN) { error = xfs_iomap_write_unwritten(ip, ioend->io_offset, ioend->io_size); - } else if (ioend->io_isdirect && xfs_ioend_is_append(ioend)) { - /* - * For direct I/O we do not know if we need to allocate blocks - * or not so we can't preallocate an append transaction as that - * results in nested reservations and log space deadlocks. Hence - * allocate the transaction here. While this is sub-optimal and - * can block IO completion for some time, we're stuck with doing - * it this way until we can pass the ioend to the direct IO - * allocation callbacks and avoid nesting that way. - */ - error = xfs_setfilesize_trans_alloc(ioend); - if (error) - goto done; - error = xfs_setfilesize(ioend); } else if (ioend->io_append_trans) { - error = xfs_setfilesize(ioend); + error = xfs_setfilesize_ioend(ioend); } else { ASSERT(!xfs_ioend_is_append(ioend)); } @@ -242,17 +238,6 @@ done: } /* - * Call IO completion handling in caller context on the final put of an ioend. - */ -STATIC void -xfs_finish_ioend_sync( - struct xfs_ioend *ioend) -{ - if (atomic_dec_and_test(&ioend->io_remaining)) - xfs_end_io(&ioend->io_work); -} - -/* * Allocate and initialise an IO completion structure. * We need to track unwritten extent write completion here initially. * We'll need to extend this for updating the ondisk inode size later @@ -273,7 +258,6 @@ xfs_alloc_ioend( * all the I/O from calling the completion routine too early. */ atomic_set(&ioend->io_remaining, 1); - ioend->io_isdirect = 0; ioend->io_error = 0; ioend->io_list = NULL; ioend->io_type = type; @@ -1459,11 +1443,7 @@ xfs_get_blocks_direct( * * If the private argument is non-NULL __xfs_get_blocks signals us that we * need to issue a transaction to convert the range from unwritten to written - * extents. In case this is regular synchronous I/O we just call xfs_end_io - * to do this and we are done. But in case this was a successful AIO - * request this handler is called from interrupt context, from which we - * can't start transactions. In that case offload the I/O completion to - * the workqueues we also use for buffered I/O completion. + * extents. */ STATIC void xfs_end_io_direct_write( @@ -1472,7 +1452,12 @@ xfs_end_io_direct_write( ssize_t size, void *private) { - struct xfs_ioend *ioend = iocb->private; + struct inode *inode = file_inode(iocb->ki_filp); + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + + if (XFS_FORCED_SHUTDOWN(mp)) + return; /* * While the generic direct I/O code updates the inode size, it does @@ -1480,22 +1465,33 @@ xfs_end_io_direct_write( * end_io handler thinks the on-disk size is outside the in-core * size. To prevent this just update it a little bit earlier here. */ - if (offset + size > i_size_read(ioend->io_inode)) - i_size_write(ioend->io_inode, offset + size); + if (offset + size > i_size_read(inode)) + i_size_write(inode, offset + size); /* - * blockdev_direct_IO can return an error even after the I/O - * completion handler was called. Thus we need to protect - * against double-freeing. + * For direct I/O we do not know if we need to allocate blocks or not, + * so we can't preallocate an append transaction, as that results in + * nested reservations and log space deadlocks. Hence allocate the + * transaction here. While this is sub-optimal and can block IO + * completion for some time, we're stuck with doing it this way until + * we can pass the ioend to the direct IO allocation callbacks and + * avoid nesting that way. */ - iocb->private = NULL; - - ioend->io_offset = offset; - ioend->io_size = size; - if (private && size > 0) - ioend->io_type = XFS_IO_UNWRITTEN; + if (private && size > 0) { + xfs_iomap_write_unwritten(ip, offset, size); + } else if (offset + size > ip->i_d.di_size) { + struct xfs_trans *tp; + int error; + + tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return; + } - xfs_finish_ioend_sync(ioend); + xfs_setfilesize(ip, tp, offset, size); + } } STATIC ssize_t @@ -1507,39 +1503,16 @@ xfs_vm_direct_IO( { struct inode *inode = iocb->ki_filp->f_mapping->host; struct block_device *bdev = xfs_find_bdev_for_inode(inode); - struct xfs_ioend *ioend = NULL; - ssize_t ret; if (rw & WRITE) { - size_t size = iov_iter_count(iter); - - /* - * We cannot preallocate a size update transaction here as we - * don't know whether allocation is necessary or not. Hence we - * can only tell IO completion that one is necessary if we are - * not doing unwritten extent conversion. - */ - iocb->private = ioend = xfs_alloc_ioend(inode, XFS_IO_DIRECT); - if (offset + size > XFS_I(inode)->i_d.di_size) - ioend->io_isdirect = 1; - - ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iter, + return __blockdev_direct_IO(rw, iocb, inode, bdev, iter, offset, xfs_get_blocks_direct, xfs_end_io_direct_write, NULL, DIO_ASYNC_EXTEND); - if (ret != -EIOCBQUEUED && iocb->private) - goto out_destroy_ioend; - } else { - ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iter, - offset, xfs_get_blocks_direct, - NULL, NULL, 0); } - - return ret; - -out_destroy_ioend: - xfs_destroy_ioend(ioend); - return ret; + return __blockdev_direct_IO(rw, iocb, inode, bdev, iter, + offset, xfs_get_blocks_direct, + NULL, NULL, 0); } /* diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h index f94dd45..ac644e0 100644 --- a/fs/xfs/xfs_aops.h +++ b/fs/xfs/xfs_aops.h @@ -24,14 +24,12 @@ extern mempool_t *xfs_ioend_pool; * Types of I/O for bmap clustering and I/O completion tracking. */ enum { - XFS_IO_DIRECT = 0, /* special case for direct I/O ioends */ XFS_IO_DELALLOC, /* covers delalloc region */ XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ XFS_IO_OVERWRITE, /* covers already allocated extent */ }; #define XFS_IO_TYPES \ - { 0, "" }, \ { XFS_IO_DELALLOC, "delalloc" }, \ { XFS_IO_UNWRITTEN, "unwritten" }, \ { XFS_IO_OVERWRITE, "overwrite" } @@ -45,7 +43,6 @@ typedef struct xfs_ioend { unsigned int io_type; /* delalloc / unwritten */ int io_error; /* I/O error code */ atomic_t io_remaining; /* hold count */ - unsigned int io_isdirect : 1;/* direct I/O */ struct inode *io_inode; /* file being written to */ struct buffer_head *io_buffer_head;/* buffer linked list head */ struct buffer_head *io_buffer_tail;/* buffer linked list tail */ diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h index 2fdb72d..736429a 100644 --- a/fs/xfs/xfs_bmap_util.h +++ b/fs/xfs/xfs_bmap_util.h @@ -26,43 +26,8 @@ struct xfs_ifork; struct xfs_inode; struct xfs_mount; struct xfs_trans; +struct xfs_bmalloca; -/* - * Argument structure for xfs_bmap_alloc. - */ -struct xfs_bmalloca { - xfs_fsblock_t *firstblock; /* i/o first block allocated */ - struct xfs_bmap_free *flist; /* bmap freelist */ - struct xfs_trans *tp; /* transaction pointer */ - struct xfs_inode *ip; /* incore inode pointer */ - struct xfs_bmbt_irec prev; /* extent before the new one */ - struct xfs_bmbt_irec got; /* extent after, or delayed */ - - xfs_fileoff_t offset; /* offset in file filling in */ - xfs_extlen_t length; /* i/o length asked/allocated */ - xfs_fsblock_t blkno; /* starting block of new extent */ - - struct xfs_btree_cur *cur; /* btree cursor */ - xfs_extnum_t idx; /* current extent index */ - int nallocs;/* number of extents alloc'd */ - int logflags;/* flags for transaction logging */ - - xfs_extlen_t total; /* total blocks needed for xaction */ - xfs_extlen_t minlen; /* minimum allocation size (blocks) */ - xfs_extlen_t minleft; /* amount must be left after alloc */ - bool eof; /* set if allocating past last extent */ - bool wasdel; /* replacing a delayed allocation */ - bool userdata;/* set if is user data */ - bool aeof; /* allocated space at eof */ - bool conv; /* overwriting unwritten extents */ - int flags; - struct completion *done; - struct work_struct work; - int result; -}; - -int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, - int *committed); int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, int whichfork, int *eof); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 3f9bd58..507d96a 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -319,6 +319,10 @@ xfs_buf_item_format( ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT((bip->bli_flags & XFS_BLI_LOGGED) || (bip->bli_flags & XFS_BLI_STALE)); + ASSERT((bip->bli_flags & XFS_BLI_STALE) || + (xfs_blft_from_flags(&bip->__bli_format) > XFS_BLFT_UNKNOWN_BUF + && xfs_blft_from_flags(&bip->__bli_format) < XFS_BLFT_MAX_BUF)); + /* * If it is an inode buffer, transfer the in-memory state to the @@ -535,7 +539,7 @@ xfs_buf_item_push( if ((bp->b_flags & XBF_WRITE_FAIL) && ___ratelimit(&xfs_buf_write_fail_rl_state, "XFS:")) { xfs_warn(bp->b_target->bt_mount, -"Detected failing async write on buffer block 0x%llx. Retrying async write.\n", +"Detected failing async write on buffer block 0x%llx. Retrying async write.", (long long)bp->b_bn); } diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index c24c67e..2f536f3 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -86,7 +86,7 @@ static inline void xfs_dqflock(xfs_dquot_t *dqp) wait_for_completion(&dqp->q_flush); } -static inline int xfs_dqflock_nowait(xfs_dquot_t *dqp) +static inline bool xfs_dqflock_nowait(xfs_dquot_t *dqp) { return try_wait_for_completion(&dqp->q_flush); } diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 5684ac3..1cdba95 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -127,6 +127,42 @@ xfs_iozero( return (-status); } +int +xfs_update_prealloc_flags( + struct xfs_inode *ip, + enum xfs_prealloc_flags flags) +{ + struct xfs_trans *tp; + int error; + + tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID); + error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + if (!(flags & XFS_PREALLOC_INVISIBLE)) { + ip->i_d.di_mode &= ~S_ISUID; + if (ip->i_d.di_mode & S_IXGRP) + ip->i_d.di_mode &= ~S_ISGID; + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + } + + if (flags & XFS_PREALLOC_SET) + ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; + if (flags & XFS_PREALLOC_CLEAR) + ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; + + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + if (flags & XFS_PREALLOC_SYNC) + xfs_trans_set_sync(tp); + return xfs_trans_commit(tp, 0); +} + /* * Fsync operations on directories are much simpler than on regular files, * as there is no file data to flush, and thus also no need for explicit @@ -784,8 +820,8 @@ xfs_file_fallocate( { struct inode *inode = file_inode(file); struct xfs_inode *ip = XFS_I(inode); - struct xfs_trans *tp; long error; + enum xfs_prealloc_flags flags = 0; loff_t new_size = 0; if (!S_ISREG(inode->i_mode)) @@ -822,6 +858,8 @@ xfs_file_fallocate( if (error) goto out_unlock; } else { + flags |= XFS_PREALLOC_SET; + if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > i_size_read(inode)) { new_size = offset + len; @@ -839,28 +877,10 @@ xfs_file_fallocate( goto out_unlock; } - tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID); - error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - goto out_unlock; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - ip->i_d.di_mode &= ~S_ISUID; - if (ip->i_d.di_mode & S_IXGRP) - ip->i_d.di_mode &= ~S_ISGID; - - if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE))) - ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - if (file->f_flags & O_DSYNC) - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); + flags |= XFS_PREALLOC_SYNC; + + error = xfs_update_prealloc_flags(ip, flags); if (error) goto out_unlock; @@ -1384,5 +1404,4 @@ static const struct vm_operations_struct xfs_file_vm_ops = { .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = xfs_vm_page_mkwrite, - .remap_pages = generic_file_remap_pages, }; diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index fdc6422..fba6532 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -488,6 +488,7 @@ xfs_growfs_data_private( xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); if (dpct) xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); + xfs_trans_set_sync(tp); error = xfs_trans_commit(tp, 0); if (error) return error; @@ -541,7 +542,7 @@ xfs_growfs_data_private( saved_error = error; continue; } - xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); + xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); error = xfs_bwrite(bp); xfs_buf_relse(bp); @@ -756,37 +757,6 @@ out: return 0; } -/* - * Dump a transaction into the log that contains no real change. This is needed - * to be able to make the log dirty or stamp the current tail LSN into the log - * during the covering operation. - * - * We cannot use an inode here for this - that will push dirty state back up - * into the VFS and then periodic inode flushing will prevent log covering from - * making progress. Hence we log a field in the superblock instead and use a - * synchronous transaction to ensure the superblock is immediately unpinned - * and can be written back. - */ -int -xfs_fs_log_dummy( - xfs_mount_t *mp) -{ - xfs_trans_t *tp; - int error; - - tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - - /* log the UUID because it is an unchanging field */ - xfs_mod_sb(tp, XFS_SB_UUID); - xfs_trans_set_sync(tp); - return xfs_trans_commit(tp, 0); -} - int xfs_fs_goingdown( xfs_mount_t *mp, diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 41f804e..daafa1f 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -1995,6 +1995,7 @@ xfs_iunlink( agi->agi_unlinked[bucket_index] = cpu_to_be32(agino); offset = offsetof(xfs_agi_t, agi_unlinked) + (sizeof(xfs_agino_t) * bucket_index); + xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF); xfs_trans_log_buf(tp, agibp, offset, (offset + sizeof(xfs_agino_t) - 1)); return 0; @@ -2086,6 +2087,7 @@ xfs_iunlink_remove( agi->agi_unlinked[bucket_index] = cpu_to_be32(next_agino); offset = offsetof(xfs_agi_t, agi_unlinked) + (sizeof(xfs_agino_t) * bucket_index); + xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF); xfs_trans_log_buf(tp, agibp, offset, (offset + sizeof(xfs_agino_t) - 1)); } else { @@ -2656,6 +2658,124 @@ xfs_sort_for_rename( } /* + * xfs_cross_rename() + * + * responsible for handling RENAME_EXCHANGE flag in renameat2() sytemcall + */ +STATIC int +xfs_cross_rename( + struct xfs_trans *tp, + struct xfs_inode *dp1, + struct xfs_name *name1, + struct xfs_inode *ip1, + struct xfs_inode *dp2, + struct xfs_name *name2, + struct xfs_inode *ip2, + struct xfs_bmap_free *free_list, + xfs_fsblock_t *first_block, + int spaceres) +{ + int error = 0; + int ip1_flags = 0; + int ip2_flags = 0; + int dp2_flags = 0; + + /* Swap inode number for dirent in first parent */ + error = xfs_dir_replace(tp, dp1, name1, + ip2->i_ino, + first_block, free_list, spaceres); + if (error) + goto out; + + /* Swap inode number for dirent in second parent */ + error = xfs_dir_replace(tp, dp2, name2, + ip1->i_ino, + first_block, free_list, spaceres); + if (error) + goto out; + + /* + * If we're renaming one or more directories across different parents, + * update the respective ".." entries (and link counts) to match the new + * parents. + */ + if (dp1 != dp2) { + dp2_flags = XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG; + + if (S_ISDIR(ip2->i_d.di_mode)) { + error = xfs_dir_replace(tp, ip2, &xfs_name_dotdot, + dp1->i_ino, first_block, + free_list, spaceres); + if (error) + goto out; + + /* transfer ip2 ".." reference to dp1 */ + if (!S_ISDIR(ip1->i_d.di_mode)) { + error = xfs_droplink(tp, dp2); + if (error) + goto out; + error = xfs_bumplink(tp, dp1); + if (error) + goto out; + } + + /* + * Although ip1 isn't changed here, userspace needs + * to be warned about the change, so that applications + * relying on it (like backup ones), will properly + * notify the change + */ + ip1_flags |= XFS_ICHGTIME_CHG; + ip2_flags |= XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG; + } + + if (S_ISDIR(ip1->i_d.di_mode)) { + error = xfs_dir_replace(tp, ip1, &xfs_name_dotdot, + dp2->i_ino, first_block, + free_list, spaceres); + if (error) + goto out; + + /* transfer ip1 ".." reference to dp2 */ + if (!S_ISDIR(ip2->i_d.di_mode)) { + error = xfs_droplink(tp, dp1); + if (error) + goto out; + error = xfs_bumplink(tp, dp2); + if (error) + goto out; + } + + /* + * Although ip2 isn't changed here, userspace needs + * to be warned about the change, so that applications + * relying on it (like backup ones), will properly + * notify the change + */ + ip1_flags |= XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG; + ip2_flags |= XFS_ICHGTIME_CHG; + } + } + + if (ip1_flags) { + xfs_trans_ichgtime(tp, ip1, ip1_flags); + xfs_trans_log_inode(tp, ip1, XFS_ILOG_CORE); + } + if (ip2_flags) { + xfs_trans_ichgtime(tp, ip2, ip2_flags); + xfs_trans_log_inode(tp, ip2, XFS_ILOG_CORE); + } + if (dp2_flags) { + xfs_trans_ichgtime(tp, dp2, dp2_flags); + xfs_trans_log_inode(tp, dp2, XFS_ILOG_CORE); + } + xfs_trans_ichgtime(tp, dp1, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, dp1, XFS_ILOG_CORE); +out: + return error; +} + +/* * xfs_rename */ int @@ -2665,7 +2785,8 @@ xfs_rename( xfs_inode_t *src_ip, xfs_inode_t *target_dp, struct xfs_name *target_name, - xfs_inode_t *target_ip) + xfs_inode_t *target_ip, + unsigned int flags) { xfs_trans_t *tp = NULL; xfs_mount_t *mp = src_dp->i_mount; @@ -2743,6 +2864,18 @@ xfs_rename( } /* + * Handle RENAME_EXCHANGE flags + */ + if (flags & RENAME_EXCHANGE) { + error = xfs_cross_rename(tp, src_dp, src_name, src_ip, + target_dp, target_name, target_ip, + &free_list, &first_block, spaceres); + if (error) + goto abort_return; + goto finish_rename; + } + + /* * Set up the target. */ if (target_ip == NULL) { @@ -2881,6 +3014,7 @@ xfs_rename( if (new_parent) xfs_trans_log_inode(tp, target_dp, XFS_ILOG_CORE); +finish_rename: /* * If this is a synchronous mount, make sure that the * rename transaction goes to disk before returning to diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 4ed2ba9..86cd6b3 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -338,7 +338,7 @@ int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, struct xfs_inode *src_ip, struct xfs_inode *target_dp, struct xfs_name *target_name, - struct xfs_inode *target_ip); + struct xfs_inode *target_ip, unsigned int flags); void xfs_ilock(xfs_inode_t *, uint); int xfs_ilock_nowait(xfs_inode_t *, uint); @@ -377,6 +377,15 @@ int xfs_droplink(struct xfs_trans *, struct xfs_inode *); int xfs_bumplink(struct xfs_trans *, struct xfs_inode *); /* from xfs_file.c */ +enum xfs_prealloc_flags { + XFS_PREALLOC_SET = (1 << 1), + XFS_PREALLOC_CLEAR = (1 << 2), + XFS_PREALLOC_SYNC = (1 << 3), + XFS_PREALLOC_INVISIBLE = (1 << 4), +}; + +int xfs_update_prealloc_flags(struct xfs_inode *, + enum xfs_prealloc_flags); int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); int xfs_iozero(struct xfs_inode *, loff_t, size_t); diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index a1831980..f7afb86 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -606,11 +606,8 @@ xfs_ioc_space( unsigned int cmd, xfs_flock64_t *bf) { - struct xfs_mount *mp = ip->i_mount; - struct xfs_trans *tp; struct iattr iattr; - bool setprealloc = false; - bool clrprealloc = false; + enum xfs_prealloc_flags flags = 0; int error; /* @@ -630,6 +627,11 @@ xfs_ioc_space( if (!S_ISREG(inode->i_mode)) return -EINVAL; + if (filp->f_flags & O_DSYNC) + flags |= XFS_PREALLOC_SYNC; + if (ioflags & XFS_IO_INVIS) + flags |= XFS_PREALLOC_INVISIBLE; + error = mnt_want_write_file(filp); if (error) return error; @@ -673,25 +675,23 @@ xfs_ioc_space( } if (bf->l_start < 0 || - bf->l_start > mp->m_super->s_maxbytes || + bf->l_start > inode->i_sb->s_maxbytes || bf->l_start + bf->l_len < 0 || - bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) { + bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { error = -EINVAL; goto out_unlock; } switch (cmd) { case XFS_IOC_ZERO_RANGE: + flags |= XFS_PREALLOC_SET; error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); - if (!error) - setprealloc = true; break; case XFS_IOC_RESVSP: case XFS_IOC_RESVSP64: + flags |= XFS_PREALLOC_SET; error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, XFS_BMAPI_PREALLOC); - if (!error) - setprealloc = true; break; case XFS_IOC_UNRESVSP: case XFS_IOC_UNRESVSP64: @@ -701,6 +701,7 @@ xfs_ioc_space( case XFS_IOC_ALLOCSP64: case XFS_IOC_FREESP: case XFS_IOC_FREESP64: + flags |= XFS_PREALLOC_CLEAR; if (bf->l_start > XFS_ISIZE(ip)) { error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), bf->l_start - XFS_ISIZE(ip), 0); @@ -712,8 +713,6 @@ xfs_ioc_space( iattr.ia_size = bf->l_start; error = xfs_setattr_size(ip, &iattr); - if (!error) - clrprealloc = true; break; default: ASSERT(0); @@ -723,32 +722,7 @@ xfs_ioc_space( if (error) goto out_unlock; - tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - goto out_unlock; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - - if (!(ioflags & XFS_IO_INVIS)) { - ip->i_d.di_mode &= ~S_ISUID; - if (ip->i_d.di_mode & S_IXGRP) - ip->i_d.di_mode &= ~S_ISGID; - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - } - - if (setprealloc) - ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; - else if (clrprealloc) - ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; - - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - if (filp->f_flags & O_DSYNC) - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); + error = xfs_update_prealloc_flags(ip, flags); out_unlock: xfs_iunlock(ip, XFS_IOLOCK_EXCL); @@ -1013,20 +987,182 @@ xfs_diflags_to_linux( inode->i_flags &= ~S_NOATIME; } -#define FSX_PROJID 1 -#define FSX_EXTSIZE 2 -#define FSX_XFLAGS 4 -#define FSX_NONBLOCK 8 +static int +xfs_ioctl_setattr_xflags( + struct xfs_trans *tp, + struct xfs_inode *ip, + struct fsxattr *fa) +{ + struct xfs_mount *mp = ip->i_mount; + + /* Can't change realtime flag if any extents are allocated. */ + if ((ip->i_d.di_nextents || ip->i_delayed_blks) && + XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & XFS_XFLAG_REALTIME)) + return -EINVAL; + + /* If realtime flag is set then must have realtime device */ + if (fa->fsx_xflags & XFS_XFLAG_REALTIME) { + if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || + (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) + return -EINVAL; + } + + /* + * Can't modify an immutable/append-only file unless + * we have appropriate permission. + */ + if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || + (fa->fsx_xflags & (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && + !capable(CAP_LINUX_IMMUTABLE)) + return -EPERM; + + xfs_set_diflags(ip, fa->fsx_xflags); + xfs_diflags_to_linux(ip); + xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + XFS_STATS_INC(xs_ig_attrchg); + return 0; +} + +/* + * Set up the transaction structure for the setattr operation, checking that we + * have permission to do so. On success, return a clean transaction and the + * inode locked exclusively ready for further operation specific checks. On + * failure, return an error without modifying or locking the inode. + */ +static struct xfs_trans * +xfs_ioctl_setattr_get_trans( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error; + + if (mp->m_flags & XFS_MOUNT_RDONLY) + return ERR_PTR(-EROFS); + if (XFS_FORCED_SHUTDOWN(mp)) + return ERR_PTR(-EIO); + + tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); + if (error) + goto out_cancel; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + /* + * CAP_FOWNER overrides the following restrictions: + * + * The user ID of the calling process must be equal to the file owner + * ID, except in cases where the CAP_FSETID capability is applicable. + */ + if (!inode_owner_or_capable(VFS_I(ip))) { + error = -EPERM; + goto out_cancel; + } + + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + + return tp; + +out_cancel: + xfs_trans_cancel(tp, 0); + return ERR_PTR(error); +} + +/* + * extent size hint validation is somewhat cumbersome. Rules are: + * + * 1. extent size hint is only valid for directories and regular files + * 2. XFS_XFLAG_EXTSIZE is only valid for regular files + * 3. XFS_XFLAG_EXTSZINHERIT is only valid for directories. + * 4. can only be changed on regular files if no extents are allocated + * 5. can be changed on directories at any time + * 6. extsize hint of 0 turns off hints, clears inode flags. + * 7. Extent size must be a multiple of the appropriate block size. + * 8. for non-realtime files, the extent size hint must be limited + * to half the AG size to avoid alignment extending the extent beyond the + * limits of the AG. + */ +static int +xfs_ioctl_setattr_check_extsize( + struct xfs_inode *ip, + struct fsxattr *fa) +{ + struct xfs_mount *mp = ip->i_mount; + + if ((fa->fsx_xflags & XFS_XFLAG_EXTSIZE) && !S_ISREG(ip->i_d.di_mode)) + return -EINVAL; + + if ((fa->fsx_xflags & XFS_XFLAG_EXTSZINHERIT) && + !S_ISDIR(ip->i_d.di_mode)) + return -EINVAL; + + if (S_ISREG(ip->i_d.di_mode) && ip->i_d.di_nextents && + ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) + return -EINVAL; + + if (fa->fsx_extsize != 0) { + xfs_extlen_t size; + xfs_fsblock_t extsize_fsb; + + extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); + if (extsize_fsb > MAXEXTLEN) + return -EINVAL; + + if (XFS_IS_REALTIME_INODE(ip) || + (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { + size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; + } else { + size = mp->m_sb.sb_blocksize; + if (extsize_fsb > mp->m_sb.sb_agblocks / 2) + return -EINVAL; + } + + if (fa->fsx_extsize % size) + return -EINVAL; + } else + fa->fsx_xflags &= ~(XFS_XFLAG_EXTSIZE | XFS_XFLAG_EXTSZINHERIT); + + return 0; +} + +static int +xfs_ioctl_setattr_check_projid( + struct xfs_inode *ip, + struct fsxattr *fa) +{ + /* Disallow 32bit project ids if projid32bit feature is not enabled. */ + if (fa->fsx_projid > (__uint16_t)-1 && + !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) + return -EINVAL; + + /* + * Project Quota ID state is only allowed to change from within the init + * namespace. Enforce that restriction only if we are trying to change + * the quota ID state. Everything else is allowed in user namespaces. + */ + if (current_user_ns() == &init_user_ns) + return 0; + + if (xfs_get_projid(ip) != fa->fsx_projid) + return -EINVAL; + if ((fa->fsx_xflags & XFS_XFLAG_PROJINHERIT) != + (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) + return -EINVAL; + + return 0; +} STATIC int xfs_ioctl_setattr( xfs_inode_t *ip, - struct fsxattr *fa, - int mask) + struct fsxattr *fa) { struct xfs_mount *mp = ip->i_mount; struct xfs_trans *tp; - unsigned int lock_flags = 0; struct xfs_dquot *udqp = NULL; struct xfs_dquot *pdqp = NULL; struct xfs_dquot *olddquot = NULL; @@ -1034,17 +1170,9 @@ xfs_ioctl_setattr( trace_xfs_ioctl_setattr(ip); - if (mp->m_flags & XFS_MOUNT_RDONLY) - return -EROFS; - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; - - /* - * Disallow 32bit project ids when projid32bit feature is not enabled. - */ - if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && - !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) - return -EINVAL; + code = xfs_ioctl_setattr_check_projid(ip, fa); + if (code) + return code; /* * If disk quotas is on, we make sure that the dquots do exist on disk, @@ -1054,7 +1182,7 @@ xfs_ioctl_setattr( * If the IDs do change before we take the ilock, we're covered * because the i_*dquot fields will get updated anyway. */ - if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { + if (XFS_IS_QUOTA_ON(mp)) { code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, ip->i_d.di_gid, fa->fsx_projid, XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); @@ -1062,175 +1190,49 @@ xfs_ioctl_setattr( return code; } - /* - * For the other attributes, we acquire the inode lock and - * first do an error checking pass. - */ - tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); - code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); - if (code) - goto error_return; - - lock_flags = XFS_ILOCK_EXCL; - xfs_ilock(ip, lock_flags); - - /* - * CAP_FOWNER overrides the following restrictions: - * - * The user ID of the calling process must be equal - * to the file owner ID, except in cases where the - * CAP_FSETID capability is applicable. - */ - if (!inode_owner_or_capable(VFS_I(ip))) { - code = -EPERM; - goto error_return; - } - - /* - * Do a quota reservation only if projid is actually going to change. - * Only allow changing of projid from init_user_ns since it is a - * non user namespace aware identifier. - */ - if (mask & FSX_PROJID) { - if (current_user_ns() != &init_user_ns) { - code = -EINVAL; - goto error_return; - } - - if (XFS_IS_QUOTA_RUNNING(mp) && - XFS_IS_PQUOTA_ON(mp) && - xfs_get_projid(ip) != fa->fsx_projid) { - ASSERT(tp); - code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, - pdqp, capable(CAP_FOWNER) ? - XFS_QMOPT_FORCE_RES : 0); - if (code) /* out of quota */ - goto error_return; - } + tp = xfs_ioctl_setattr_get_trans(ip); + if (IS_ERR(tp)) { + code = PTR_ERR(tp); + goto error_free_dquots; } - if (mask & FSX_EXTSIZE) { - /* - * Can't change extent size if any extents are allocated. - */ - if (ip->i_d.di_nextents && - ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != - fa->fsx_extsize)) { - code = -EINVAL; /* EFBIG? */ - goto error_return; - } - /* - * Extent size must be a multiple of the appropriate block - * size, if set at all. It must also be smaller than the - * maximum extent size supported by the filesystem. - * - * Also, for non-realtime files, limit the extent size hint to - * half the size of the AGs in the filesystem so alignment - * doesn't result in extents larger than an AG. - */ - if (fa->fsx_extsize != 0) { - xfs_extlen_t size; - xfs_fsblock_t extsize_fsb; - - extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); - if (extsize_fsb > MAXEXTLEN) { - code = -EINVAL; - goto error_return; - } - - if (XFS_IS_REALTIME_INODE(ip) || - ((mask & FSX_XFLAGS) && - (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { - size = mp->m_sb.sb_rextsize << - mp->m_sb.sb_blocklog; - } else { - size = mp->m_sb.sb_blocksize; - if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { - code = -EINVAL; - goto error_return; - } - } - - if (fa->fsx_extsize % size) { - code = -EINVAL; - goto error_return; - } - } + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && + xfs_get_projid(ip) != fa->fsx_projid) { + code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, + capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); + if (code) /* out of quota */ + goto error_trans_cancel; } + code = xfs_ioctl_setattr_check_extsize(ip, fa); + if (code) + goto error_trans_cancel; - if (mask & FSX_XFLAGS) { - /* - * Can't change realtime flag if any extents are allocated. - */ - if ((ip->i_d.di_nextents || ip->i_delayed_blks) && - (XFS_IS_REALTIME_INODE(ip)) != - (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { - code = -EINVAL; /* EFBIG? */ - goto error_return; - } - - /* - * If realtime flag is set then must have realtime data. - */ - if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { - if ((mp->m_sb.sb_rblocks == 0) || - (mp->m_sb.sb_rextsize == 0) || - (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { - code = -EINVAL; - goto error_return; - } - } - - /* - * Can't modify an immutable/append-only file unless - * we have appropriate permission. - */ - if ((ip->i_d.di_flags & - (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || - (fa->fsx_xflags & - (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && - !capable(CAP_LINUX_IMMUTABLE)) { - code = -EPERM; - goto error_return; - } - } - - xfs_trans_ijoin(tp, ip, 0); + code = xfs_ioctl_setattr_xflags(tp, ip, fa); + if (code) + goto error_trans_cancel; /* - * Change file ownership. Must be the owner or privileged. + * Change file ownership. Must be the owner or privileged. CAP_FSETID + * overrides the following restrictions: + * + * The set-user-ID and set-group-ID bits of a file will be cleared upon + * successful return from chown() */ - if (mask & FSX_PROJID) { - /* - * CAP_FSETID overrides the following restrictions: - * - * The set-user-ID and set-group-ID bits of a file will be - * cleared upon successful return from chown() - */ - if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && - !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) - ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); - - /* - * Change the ownerships and register quota modifications - * in the transaction. - */ - if (xfs_get_projid(ip) != fa->fsx_projid) { - if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { - olddquot = xfs_qm_vop_chown(tp, ip, - &ip->i_pdquot, pdqp); - } - ASSERT(ip->i_d.di_version > 1); - xfs_set_projid(ip, fa->fsx_projid); - } - } + if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && + !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) + ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); - if (mask & FSX_XFLAGS) { - xfs_set_diflags(ip, fa->fsx_xflags); - xfs_diflags_to_linux(ip); + /* Change the ownerships and register project quota modifications */ + if (xfs_get_projid(ip) != fa->fsx_projid) { + if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { + olddquot = xfs_qm_vop_chown(tp, ip, + &ip->i_pdquot, pdqp); + } + ASSERT(ip->i_d.di_version > 1); + xfs_set_projid(ip, fa->fsx_projid); } /* @@ -1238,34 +1240,12 @@ xfs_ioctl_setattr( * extent size hint should be set on the inode. If no extent size flags * are set on the inode then unconditionally clear the extent size hint. */ - if (mask & FSX_EXTSIZE) { - int extsize = 0; - - if (ip->i_d.di_flags & - (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) - extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; - ip->i_d.di_extsize = extsize; - } - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - XFS_STATS_INC(xs_ig_attrchg); + if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) + ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; + else + ip->i_d.di_extsize = 0; - /* - * If this is a synchronous mount, make sure that the - * transaction goes to disk before returning to the user. - * This is slightly sub-optimal in that truncates require - * two sync transactions instead of one for wsync filesystems. - * One for the truncate and one for the timestamps since we - * don't want to change the timestamps unless we're sure the - * truncate worked. Truncates are less than 1% of the laddis - * mix so this probably isn't worth the trouble to optimize. - */ - if (mp->m_flags & XFS_MOUNT_WSYNC) - xfs_trans_set_sync(tp); code = xfs_trans_commit(tp, 0); - xfs_iunlock(ip, lock_flags); /* * Release any dquot(s) the inode had kept before chown. @@ -1276,12 +1256,11 @@ xfs_ioctl_setattr( return code; - error_return: +error_trans_cancel: + xfs_trans_cancel(tp, 0); +error_free_dquots: xfs_qm_dqrele(udqp); xfs_qm_dqrele(pdqp); - xfs_trans_cancel(tp, 0); - if (lock_flags) - xfs_iunlock(ip, lock_flags); return code; } @@ -1292,20 +1271,15 @@ xfs_ioc_fssetxattr( void __user *arg) { struct fsxattr fa; - unsigned int mask; int error; if (copy_from_user(&fa, arg, sizeof(fa))) return -EFAULT; - mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; - if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) - mask |= FSX_NONBLOCK; - error = mnt_want_write_file(filp); if (error) return error; - error = xfs_ioctl_setattr(ip, &fa, mask); + error = xfs_ioctl_setattr(ip, &fa); mnt_drop_write_file(filp); return error; } @@ -1325,14 +1299,14 @@ xfs_ioc_getxflags( STATIC int xfs_ioc_setxflags( - xfs_inode_t *ip, + struct xfs_inode *ip, struct file *filp, void __user *arg) { + struct xfs_trans *tp; struct fsxattr fa; unsigned int flags; - unsigned int mask; - int error; + int error; if (copy_from_user(&flags, arg, sizeof(flags))) return -EFAULT; @@ -1342,15 +1316,26 @@ xfs_ioc_setxflags( FS_SYNC_FL)) return -EOPNOTSUPP; - mask = FSX_XFLAGS; - if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) - mask |= FSX_NONBLOCK; fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); error = mnt_want_write_file(filp); if (error) return error; - error = xfs_ioctl_setattr(ip, &fa, mask); + + tp = xfs_ioctl_setattr_get_trans(ip); + if (IS_ERR(tp)) { + error = PTR_ERR(tp); + goto out_drop_write; + } + + error = xfs_ioctl_setattr_xflags(tp, ip, &fa); + if (error) { + xfs_trans_cancel(tp, 0); + goto out_drop_write; + } + + error = xfs_trans_commit(tp, 0); +out_drop_write: mnt_drop_write_file(filp); return error; } diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index ec67728..bfc7c7c 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -423,7 +423,7 @@ xfs_compat_attrmulti_by_handle( ops = memdup_user(compat_ptr(am_hreq.ops), size); if (IS_ERR(ops)) { - error = -PTR_ERR(ops); + error = PTR_ERR(ops); goto out_dput; } diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index c980e2a..ccb1dd0 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -802,7 +802,7 @@ int xfs_iomap_write_unwritten( xfs_inode_t *ip, xfs_off_t offset, - size_t count) + xfs_off_t count) { xfs_mount_t *mp = ip->i_mount; xfs_fileoff_t offset_fsb; diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h index 411fbb8..8688e66 100644 --- a/fs/xfs/xfs_iomap.h +++ b/fs/xfs/xfs_iomap.h @@ -27,6 +27,6 @@ int xfs_iomap_write_delay(struct xfs_inode *, xfs_off_t, size_t, struct xfs_bmbt_irec *); int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t, struct xfs_bmbt_irec *); -int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t); +int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t); #endif /* __XFS_IOMAP_H__*/ diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index c50311c..ce80eeb 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -380,18 +380,27 @@ xfs_vn_rename( struct inode *odir, struct dentry *odentry, struct inode *ndir, - struct dentry *ndentry) + struct dentry *ndentry, + unsigned int flags) { struct inode *new_inode = ndentry->d_inode; + int omode = 0; struct xfs_name oname; struct xfs_name nname; - xfs_dentry_to_name(&oname, odentry, 0); + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + return -EINVAL; + + /* if we are exchanging files, we need to set i_mode of both files */ + if (flags & RENAME_EXCHANGE) + omode = ndentry->d_inode->i_mode; + + xfs_dentry_to_name(&oname, odentry, omode); xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode); return xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), - XFS_I(ndir), &nname, new_inode ? - XFS_I(new_inode) : NULL); + XFS_I(ndir), &nname, + new_inode ? XFS_I(new_inode) : NULL, flags); } /* @@ -1144,7 +1153,7 @@ static const struct inode_operations xfs_dir_inode_operations = { */ .rmdir = xfs_vn_unlink, .mknod = xfs_vn_mknod, - .rename = xfs_vn_rename, + .rename2 = xfs_vn_rename, .get_acl = xfs_get_acl, .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, @@ -1172,7 +1181,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = { */ .rmdir = xfs_vn_unlink, .mknod = xfs_vn_mknod, - .rename = xfs_vn_rename, + .rename2 = xfs_vn_rename, .get_acl = xfs_get_acl, .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index e408bf5..bcc7cfa 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -33,6 +33,7 @@ #include "xfs_fsops.h" #include "xfs_cksum.h" #include "xfs_sysfs.h" +#include "xfs_sb.h" kmem_zone_t *xfs_log_ticket_zone; @@ -1290,9 +1291,20 @@ xfs_log_worker( struct xfs_mount *mp = log->l_mp; /* dgc: errors ignored - not fatal and nowhere to report them */ - if (xfs_log_need_covered(mp)) - xfs_fs_log_dummy(mp); - else + if (xfs_log_need_covered(mp)) { + /* + * Dump a transaction into the log that contains no real change. + * This is needed to stamp the current tail LSN into the log + * during the covering operation. + * + * We cannot use an inode here for this - that will push dirty + * state back up into the VFS and then periodic inode flushing + * will prevent log covering from making progress. Hence we + * synchronously log the superblock instead to ensure the + * superblock is immediately unpinned and can be written back. + */ + xfs_sync_sb(mp, true); + } else xfs_log_force(mp, 0); /* start pushing all the metadata that is currently dirty */ @@ -1395,6 +1407,8 @@ xlog_alloc_log( ASSERT(xfs_buf_islocked(bp)); xfs_buf_unlock(bp); + /* use high priority wq for log I/O completion */ + bp->b_ioend_wq = mp->m_log_workqueue; bp->b_iodone = xlog_iodone; log->l_xbuf = bp; @@ -1427,6 +1441,8 @@ xlog_alloc_log( ASSERT(xfs_buf_islocked(bp)); xfs_buf_unlock(bp); + /* use high priority wq for log I/O completion */ + bp->b_ioend_wq = mp->m_log_workqueue; bp->b_iodone = xlog_iodone; iclog->ic_bp = bp; iclog->ic_data = bp->b_addr; @@ -1806,8 +1822,6 @@ xlog_sync( XFS_BUF_ZEROFLAGS(bp); XFS_BUF_ASYNC(bp); bp->b_flags |= XBF_SYNCIO; - /* use high priority completion wq */ - bp->b_ioend_wq = log->l_mp->m_log_workqueue; if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) { bp->b_flags |= XBF_FUA; @@ -1856,8 +1870,6 @@ xlog_sync( bp->b_flags |= XBF_SYNCIO; if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) bp->b_flags |= XBF_FUA; - /* use high priority completion wq */ - bp->b_ioend_wq = log->l_mp->m_log_workqueue; ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1); ASSERT(XFS_BUF_ADDR(bp) + BTOBB(count) <= log->l_logBBsize); @@ -2027,7 +2039,7 @@ xlog_print_tic_res( " total reg = %u bytes (o/flow = %u bytes)\n" " ophdrs = %u (ophdr space = %u bytes)\n" " ophdr + reg = %u bytes\n" - " num regions = %u\n", + " num regions = %u", ((ticket->t_trans_type <= 0 || ticket->t_trans_type > XFS_TRANS_TYPE_MAX) ? "bad-trans-type" : trans_type_str[ticket->t_trans_type-1]), diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index d3d3883..4fa80e6 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -408,11 +408,11 @@ xfs_update_alignment(xfs_mount_t *mp) if (xfs_sb_version_hasdalign(sbp)) { if (sbp->sb_unit != mp->m_dalign) { sbp->sb_unit = mp->m_dalign; - mp->m_update_flags |= XFS_SB_UNIT; + mp->m_update_sb = true; } if (sbp->sb_width != mp->m_swidth) { sbp->sb_width = mp->m_swidth; - mp->m_update_flags |= XFS_SB_WIDTH; + mp->m_update_sb = true; } } else { xfs_warn(mp, @@ -583,38 +583,19 @@ int xfs_mount_reset_sbqflags( struct xfs_mount *mp) { - int error; - struct xfs_trans *tp; - mp->m_qflags = 0; - /* - * It is OK to look at sb_qflags here in mount path, - * without m_sb_lock. - */ + /* It is OK to look at sb_qflags in the mount path without m_sb_lock. */ if (mp->m_sb.sb_qflags == 0) return 0; spin_lock(&mp->m_sb_lock); mp->m_sb.sb_qflags = 0; spin_unlock(&mp->m_sb_lock); - /* - * If the fs is readonly, let the incore superblock run - * with quotas off but don't flush the update out to disk - */ - if (mp->m_flags & XFS_MOUNT_RDONLY) + if (!xfs_fs_writable(mp, SB_FREEZE_WRITE)) return 0; - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - xfs_alert(mp, "%s: Superblock update failed!", __func__); - return error; - } - - xfs_mod_sb(tp, XFS_SB_QFLAGS); - return xfs_trans_commit(tp, 0); + return xfs_sync_sb(mp, false); } __uint64_t @@ -659,26 +640,25 @@ xfs_mountfs( xfs_sb_mount_common(mp, sbp); /* - * Check for a mismatched features2 values. Older kernels - * read & wrote into the wrong sb offset for sb_features2 - * on some platforms due to xfs_sb_t not being 64bit size aligned - * when sb_features2 was added, which made older superblock - * reading/writing routines swap it as a 64-bit value. + * Check for a mismatched features2 values. Older kernels read & wrote + * into the wrong sb offset for sb_features2 on some platforms due to + * xfs_sb_t not being 64bit size aligned when sb_features2 was added, + * which made older superblock reading/writing routines swap it as a + * 64-bit value. * * For backwards compatibility, we make both slots equal. * - * If we detect a mismatched field, we OR the set bits into the - * existing features2 field in case it has already been modified; we - * don't want to lose any features. We then update the bad location - * with the ORed value so that older kernels will see any features2 - * flags, and mark the two fields as needing updates once the - * transaction subsystem is online. + * If we detect a mismatched field, we OR the set bits into the existing + * features2 field in case it has already been modified; we don't want + * to lose any features. We then update the bad location with the ORed + * value so that older kernels will see any features2 flags. The + * superblock writeback code ensures the new sb_features2 is copied to + * sb_bad_features2 before it is logged or written to disk. */ if (xfs_sb_has_mismatched_features2(sbp)) { xfs_warn(mp, "correcting sb_features alignment problem"); sbp->sb_features2 |= sbp->sb_bad_features2; - sbp->sb_bad_features2 = sbp->sb_features2; - mp->m_update_flags |= XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2; + mp->m_update_sb = true; /* * Re-check for ATTR2 in case it was found in bad_features2 @@ -692,17 +672,17 @@ xfs_mountfs( if (xfs_sb_version_hasattr2(&mp->m_sb) && (mp->m_flags & XFS_MOUNT_NOATTR2)) { xfs_sb_version_removeattr2(&mp->m_sb); - mp->m_update_flags |= XFS_SB_FEATURES2; + mp->m_update_sb = true; /* update sb_versionnum for the clearing of the morebits */ if (!sbp->sb_features2) - mp->m_update_flags |= XFS_SB_VERSIONNUM; + mp->m_update_sb = true; } /* always use v2 inodes by default now */ if (!(mp->m_sb.sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { mp->m_sb.sb_versionnum |= XFS_SB_VERSION_NLINKBIT; - mp->m_update_flags |= XFS_SB_VERSIONNUM; + mp->m_update_sb = true; } /* @@ -895,8 +875,8 @@ xfs_mountfs( * the next remount into writeable mode. Otherwise we would never * perform the update e.g. for the root filesystem. */ - if (mp->m_update_flags && !(mp->m_flags & XFS_MOUNT_RDONLY)) { - error = xfs_mount_log_sb(mp, mp->m_update_flags); + if (mp->m_update_sb && !(mp->m_flags & XFS_MOUNT_RDONLY)) { + error = xfs_sync_sb(mp, false); if (error) { xfs_warn(mp, "failed to write sb changes"); goto out_rtunmount; @@ -1103,9 +1083,6 @@ xfs_fs_writable( int xfs_log_sbcount(xfs_mount_t *mp) { - xfs_trans_t *tp; - int error; - /* allow this to proceed during the freeze sequence... */ if (!xfs_fs_writable(mp, SB_FREEZE_COMPLETE)) return 0; @@ -1119,17 +1096,7 @@ xfs_log_sbcount(xfs_mount_t *mp) if (!xfs_sb_version_haslazysbcount(&mp->m_sb)) return 0; - tp = _xfs_trans_alloc(mp, XFS_TRANS_SB_COUNT, KM_SLEEP); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_mod_sb(tp, XFS_SB_IFREE | XFS_SB_ICOUNT | XFS_SB_FDBLOCKS); - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - return error; + return xfs_sync_sb(mp, true); } /* @@ -1423,34 +1390,6 @@ xfs_freesb( } /* - * Used to log changes to the superblock unit and width fields which could - * be altered by the mount options, as well as any potential sb_features2 - * fixup. Only the first superblock is updated. - */ -int -xfs_mount_log_sb( - xfs_mount_t *mp, - __int64_t fields) -{ - xfs_trans_t *tp; - int error; - - ASSERT(fields & (XFS_SB_UNIT | XFS_SB_WIDTH | XFS_SB_UUID | - XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2 | - XFS_SB_VERSIONNUM)); - - tp = xfs_trans_alloc(mp, XFS_TRANS_SB_UNIT); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - xfs_mod_sb(tp, fields); - error = xfs_trans_commit(tp, 0); - return error; -} - -/* * If the underlying (data/log/rt) device is readonly, there are some * operations that cannot proceed. */ diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 22ccf69..a5b2ff8 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -162,8 +162,7 @@ typedef struct xfs_mount { struct delayed_work m_reclaim_work; /* background inode reclaim */ struct delayed_work m_eofblocks_work; /* background eof blocks trimming */ - __int64_t m_update_flags; /* sb flags we need to update - on the next remount,rw */ + bool m_update_sb; /* sb needs update in mount */ int64_t m_low_space[XFS_LOWSP_MAX]; /* low free space thresholds */ struct xfs_kobj m_kobj; @@ -378,7 +377,7 @@ extern void xfs_unmountfs(xfs_mount_t *); extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, uint, int); -extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t); +extern int xfs_mount_log_sb(xfs_mount_t *); extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); extern int xfs_readsb(xfs_mount_t *, int); extern void xfs_freesb(xfs_mount_t *); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 79fb19d..3e81862 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -714,7 +714,6 @@ STATIC int xfs_qm_qino_alloc( xfs_mount_t *mp, xfs_inode_t **ip, - __int64_t sbfields, uint flags) { xfs_trans_t *tp; @@ -777,11 +776,6 @@ xfs_qm_qino_alloc( spin_lock(&mp->m_sb_lock); if (flags & XFS_QMOPT_SBVERSION) { ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); - ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) == - (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | - XFS_SB_QFLAGS)); xfs_sb_version_addquota(&mp->m_sb); mp->m_sb.sb_uquotino = NULLFSINO; @@ -798,7 +792,7 @@ xfs_qm_qino_alloc( else mp->m_sb.sb_pquotino = (*ip)->i_ino; spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, sbfields); + xfs_log_sb(tp); if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { xfs_alert(mp, "%s failed (error %d)!", __func__, error); @@ -1451,7 +1445,7 @@ xfs_qm_mount_quotas( spin_unlock(&mp->m_sb_lock); if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { - if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { + if (xfs_sync_sb(mp, false)) { /* * We could only have been turning quotas off. * We aren't in very good shape actually because @@ -1482,7 +1476,6 @@ xfs_qm_init_quotainos( struct xfs_inode *gip = NULL; struct xfs_inode *pip = NULL; int error; - __int64_t sbflags = 0; uint flags = 0; ASSERT(mp->m_quotainfo); @@ -1517,9 +1510,6 @@ xfs_qm_init_quotainos( } } else { flags |= XFS_QMOPT_SBVERSION; - sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | - XFS_SB_QFLAGS); } /* @@ -1530,7 +1520,6 @@ xfs_qm_init_quotainos( */ if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { error = xfs_qm_qino_alloc(mp, &uip, - sbflags | XFS_SB_UQUOTINO, flags | XFS_QMOPT_UQUOTA); if (error) goto error_rele; @@ -1539,7 +1528,6 @@ xfs_qm_init_quotainos( } if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { error = xfs_qm_qino_alloc(mp, &gip, - sbflags | XFS_SB_GQUOTINO, flags | XFS_QMOPT_GQUOTA); if (error) goto error_rele; @@ -1548,7 +1536,6 @@ xfs_qm_init_quotainos( } if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { error = xfs_qm_qino_alloc(mp, &pip, - sbflags | XFS_SB_PQUOTINO, flags | XFS_QMOPT_PQUOTA); if (error) goto error_rele; @@ -1587,32 +1574,6 @@ xfs_qm_dqfree_one( xfs_qm_dqdestroy(dqp); } -/* - * Start a transaction and write the incore superblock changes to - * disk. flags parameter indicates which fields have changed. - */ -int -xfs_qm_write_sb_changes( - xfs_mount_t *mp, - __int64_t flags) -{ - xfs_trans_t *tp; - int error; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_mod_sb(tp, flags); - error = xfs_trans_commit(tp, 0); - - return error; -} - - /* --------------- utility functions for vnodeops ---------------- */ diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h index 3a07a93..0d4d359 100644 --- a/fs/xfs/xfs_qm.h +++ b/fs/xfs/xfs_qm.h @@ -157,7 +157,6 @@ struct xfs_dquot_acct { #define XFS_QM_RTBWARNLIMIT 5 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); -extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t); /* dquot stuff */ extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); @@ -166,9 +165,9 @@ extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); /* quota ops */ extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, - uint, struct fs_disk_quota *); + uint, struct qc_dqblk *); extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, - struct fs_disk_quota *); + struct qc_dqblk *); extern int xfs_qm_scall_getqstat(struct xfs_mount *, struct fs_quota_stat *); extern int xfs_qm_scall_getqstatv(struct xfs_mount *, diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index 74fca68..9b965db4 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -39,7 +39,6 @@ STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint); STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *, uint); STATIC uint xfs_qm_export_flags(uint); -STATIC uint xfs_qm_export_qtype_flags(uint); /* * Turn off quota accounting and/or enforcement for all udquots and/or @@ -92,8 +91,7 @@ xfs_qm_scall_quotaoff( mutex_unlock(&q->qi_quotaofflock); /* XXX what to do if error ? Revert back to old vals incore ? */ - error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS); - return error; + return xfs_sync_sb(mp, false); } dqtype = 0; @@ -314,7 +312,6 @@ xfs_qm_scall_quotaon( { int error; uint qf; - __int64_t sbflags; flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); /* @@ -322,30 +319,22 @@ xfs_qm_scall_quotaon( */ flags &= ~(XFS_ALL_QUOTA_ACCT); - sbflags = 0; - if (flags == 0) { xfs_debug(mp, "%s: zero flags, m_qflags=%x", __func__, mp->m_qflags); return -EINVAL; } - /* No fs can turn on quotas with a delayed effect */ - ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0); - /* * Can't enforce without accounting. We check the superblock * qflags here instead of m_qflags because rootfs can have * quota acct on ondisk without m_qflags' knowing. */ - if (((flags & XFS_UQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && + if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && (flags & XFS_UQUOTA_ENFD)) || - ((flags & XFS_GQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && + ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && (flags & XFS_GQUOTA_ENFD)) || - ((flags & XFS_PQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && + ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && (flags & XFS_PQUOTA_ENFD))) { xfs_debug(mp, "%s: Can't enforce without acct, flags=%x sbflags=%x", @@ -370,11 +359,11 @@ xfs_qm_scall_quotaon( /* * There's nothing to change if it's the same. */ - if ((qf & flags) == flags && sbflags == 0) + if ((qf & flags) == flags) return -EEXIST; - sbflags |= XFS_SB_QFLAGS; - if ((error = xfs_qm_write_sb_changes(mp, sbflags))) + error = xfs_sync_sb(mp, false); + if (error) return error; /* * If we aren't trying to switch on quota enforcement, we are done. @@ -384,8 +373,7 @@ xfs_qm_scall_quotaon( ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) != (mp->m_qflags & XFS_PQUOTA_ACCT)) || ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) != - (mp->m_qflags & XFS_GQUOTA_ACCT)) || - (flags & XFS_ALL_QUOTA_ENFD) == 0) + (mp->m_qflags & XFS_GQUOTA_ACCT))) return 0; if (! XFS_IS_QUOTA_RUNNING(mp)) @@ -422,20 +410,12 @@ xfs_qm_scall_getqstat( memset(out, 0, sizeof(fs_quota_stat_t)); out->qs_version = FS_QSTAT_VERSION; - if (!xfs_sb_version_hasquota(&mp->m_sb)) { - out->qs_uquota.qfs_ino = NULLFSINO; - out->qs_gquota.qfs_ino = NULLFSINO; - return 0; - } - out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & (XFS_ALL_QUOTA_ACCT| XFS_ALL_QUOTA_ENFD)); - if (q) { - uip = q->qi_uquotaip; - gip = q->qi_gquotaip; - pip = q->qi_pquotaip; - } + uip = q->qi_uquotaip; + gip = q->qi_gquotaip; + pip = q->qi_pquotaip; if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &uip) == 0) @@ -481,14 +461,13 @@ xfs_qm_scall_getqstat( if (temppqip) IRELE(pip); } - if (q) { - out->qs_incoredqs = q->qi_dquots; - out->qs_btimelimit = q->qi_btimelimit; - out->qs_itimelimit = q->qi_itimelimit; - out->qs_rtbtimelimit = q->qi_rtbtimelimit; - out->qs_bwarnlimit = q->qi_bwarnlimit; - out->qs_iwarnlimit = q->qi_iwarnlimit; - } + out->qs_incoredqs = q->qi_dquots; + out->qs_btimelimit = q->qi_btimelimit; + out->qs_itimelimit = q->qi_itimelimit; + out->qs_rtbtimelimit = q->qi_rtbtimelimit; + out->qs_bwarnlimit = q->qi_bwarnlimit; + out->qs_iwarnlimit = q->qi_iwarnlimit; + return 0; } @@ -509,13 +488,6 @@ xfs_qm_scall_getqstatv( bool tempgqip = false; bool temppqip = false; - if (!xfs_sb_version_hasquota(&mp->m_sb)) { - out->qs_uquota.qfs_ino = NULLFSINO; - out->qs_gquota.qfs_ino = NULLFSINO; - out->qs_pquota.qfs_ino = NULLFSINO; - return 0; - } - out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & (XFS_ALL_QUOTA_ACCT| XFS_ALL_QUOTA_ENFD)); @@ -523,11 +495,9 @@ xfs_qm_scall_getqstatv( out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino; - if (q) { - uip = q->qi_uquotaip; - gip = q->qi_gquotaip; - pip = q->qi_pquotaip; - } + uip = q->qi_uquotaip; + gip = q->qi_gquotaip; + pip = q->qi_pquotaip; if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &uip) == 0) @@ -562,19 +532,18 @@ xfs_qm_scall_getqstatv( if (temppqip) IRELE(pip); } - if (q) { - out->qs_incoredqs = q->qi_dquots; - out->qs_btimelimit = q->qi_btimelimit; - out->qs_itimelimit = q->qi_itimelimit; - out->qs_rtbtimelimit = q->qi_rtbtimelimit; - out->qs_bwarnlimit = q->qi_bwarnlimit; - out->qs_iwarnlimit = q->qi_iwarnlimit; - } + out->qs_incoredqs = q->qi_dquots; + out->qs_btimelimit = q->qi_btimelimit; + out->qs_itimelimit = q->qi_itimelimit; + out->qs_rtbtimelimit = q->qi_rtbtimelimit; + out->qs_bwarnlimit = q->qi_bwarnlimit; + out->qs_iwarnlimit = q->qi_iwarnlimit; + return 0; } -#define XFS_DQ_MASK \ - (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK) +#define XFS_QC_MASK \ + (QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK) /* * Adjust quota limits, and start/stop timers accordingly. @@ -584,7 +553,7 @@ xfs_qm_scall_setqlim( struct xfs_mount *mp, xfs_dqid_t id, uint type, - fs_disk_quota_t *newlim) + struct qc_dqblk *newlim) { struct xfs_quotainfo *q = mp->m_quotainfo; struct xfs_disk_dquot *ddq; @@ -593,9 +562,9 @@ xfs_qm_scall_setqlim( int error; xfs_qcnt_t hard, soft; - if (newlim->d_fieldmask & ~XFS_DQ_MASK) + if (newlim->d_fieldmask & ~XFS_QC_MASK) return -EINVAL; - if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) + if ((newlim->d_fieldmask & XFS_QC_MASK) == 0) return 0; /* @@ -633,11 +602,11 @@ xfs_qm_scall_setqlim( /* * Make sure that hardlimits are >= soft limits before changing. */ - hard = (newlim->d_fieldmask & FS_DQ_BHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) : + hard = (newlim->d_fieldmask & QC_SPC_HARD) ? + (xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_hardlimit) : be64_to_cpu(ddq->d_blk_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) : + soft = (newlim->d_fieldmask & QC_SPC_SOFT) ? + (xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_spc_softlimit) : be64_to_cpu(ddq->d_blk_softlimit); if (hard == 0 || hard >= soft) { ddq->d_blk_hardlimit = cpu_to_be64(hard); @@ -650,11 +619,11 @@ xfs_qm_scall_setqlim( } else { xfs_debug(mp, "blkhard %Ld < blksoft %Ld", hard, soft); } - hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) : + hard = (newlim->d_fieldmask & QC_RT_SPC_HARD) ? + (xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_hardlimit) : be64_to_cpu(ddq->d_rtb_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) : + soft = (newlim->d_fieldmask & QC_RT_SPC_SOFT) ? + (xfs_qcnt_t) XFS_B_TO_FSB(mp, newlim->d_rt_spc_softlimit) : be64_to_cpu(ddq->d_rtb_softlimit); if (hard == 0 || hard >= soft) { ddq->d_rtb_hardlimit = cpu_to_be64(hard); @@ -667,10 +636,10 @@ xfs_qm_scall_setqlim( xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld", hard, soft); } - hard = (newlim->d_fieldmask & FS_DQ_IHARD) ? + hard = (newlim->d_fieldmask & QC_INO_HARD) ? (xfs_qcnt_t) newlim->d_ino_hardlimit : be64_to_cpu(ddq->d_ino_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ? + soft = (newlim->d_fieldmask & QC_INO_SOFT) ? (xfs_qcnt_t) newlim->d_ino_softlimit : be64_to_cpu(ddq->d_ino_softlimit); if (hard == 0 || hard >= soft) { @@ -687,12 +656,12 @@ xfs_qm_scall_setqlim( /* * Update warnings counter(s) if requested */ - if (newlim->d_fieldmask & FS_DQ_BWARNS) - ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns); - if (newlim->d_fieldmask & FS_DQ_IWARNS) - ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns); - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns); + if (newlim->d_fieldmask & QC_SPC_WARNS) + ddq->d_bwarns = cpu_to_be16(newlim->d_spc_warns); + if (newlim->d_fieldmask & QC_INO_WARNS) + ddq->d_iwarns = cpu_to_be16(newlim->d_ino_warns); + if (newlim->d_fieldmask & QC_RT_SPC_WARNS) + ddq->d_rtbwarns = cpu_to_be16(newlim->d_rt_spc_warns); if (id == 0) { /* @@ -702,24 +671,24 @@ xfs_qm_scall_setqlim( * soft and hard limit values (already done, above), and * for warnings. */ - if (newlim->d_fieldmask & FS_DQ_BTIMER) { - q->qi_btimelimit = newlim->d_btimer; - ddq->d_btimer = cpu_to_be32(newlim->d_btimer); + if (newlim->d_fieldmask & QC_SPC_TIMER) { + q->qi_btimelimit = newlim->d_spc_timer; + ddq->d_btimer = cpu_to_be32(newlim->d_spc_timer); } - if (newlim->d_fieldmask & FS_DQ_ITIMER) { - q->qi_itimelimit = newlim->d_itimer; - ddq->d_itimer = cpu_to_be32(newlim->d_itimer); + if (newlim->d_fieldmask & QC_INO_TIMER) { + q->qi_itimelimit = newlim->d_ino_timer; + ddq->d_itimer = cpu_to_be32(newlim->d_ino_timer); } - if (newlim->d_fieldmask & FS_DQ_RTBTIMER) { - q->qi_rtbtimelimit = newlim->d_rtbtimer; - ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer); + if (newlim->d_fieldmask & QC_RT_SPC_TIMER) { + q->qi_rtbtimelimit = newlim->d_rt_spc_timer; + ddq->d_rtbtimer = cpu_to_be32(newlim->d_rt_spc_timer); } - if (newlim->d_fieldmask & FS_DQ_BWARNS) - q->qi_bwarnlimit = newlim->d_bwarns; - if (newlim->d_fieldmask & FS_DQ_IWARNS) - q->qi_iwarnlimit = newlim->d_iwarns; - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - q->qi_rtbwarnlimit = newlim->d_rtbwarns; + if (newlim->d_fieldmask & QC_SPC_WARNS) + q->qi_bwarnlimit = newlim->d_spc_warns; + if (newlim->d_fieldmask & QC_INO_WARNS) + q->qi_iwarnlimit = newlim->d_ino_warns; + if (newlim->d_fieldmask & QC_RT_SPC_WARNS) + q->qi_rtbwarnlimit = newlim->d_rt_spc_warns; } else { /* * If the user is now over quota, start the timelimit. @@ -801,7 +770,7 @@ xfs_qm_log_quotaoff( mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL; spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, XFS_SB_QFLAGS); + xfs_log_sb(tp); /* * We have to make sure that the transaction is secure on disk before we @@ -824,7 +793,7 @@ xfs_qm_scall_getquota( struct xfs_mount *mp, xfs_dqid_t id, uint type, - struct fs_disk_quota *dst) + struct qc_dqblk *dst) { struct xfs_dquot *dqp; int error; @@ -848,28 +817,25 @@ xfs_qm_scall_getquota( } memset(dst, 0, sizeof(*dst)); - dst->d_version = FS_DQUOT_VERSION; - dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags); - dst->d_id = be32_to_cpu(dqp->q_core.d_id); - dst->d_blk_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit)); - dst->d_blk_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit)); + dst->d_spc_hardlimit = + XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit)); + dst->d_spc_softlimit = + XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit)); dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); - dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount); - dst->d_icount = dqp->q_res_icount; - dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer); - dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer); - dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns); - dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns); - dst->d_rtb_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit)); - dst->d_rtb_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit)); - dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount); - dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer); - dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns); + dst->d_space = XFS_FSB_TO_B(mp, dqp->q_res_bcount); + dst->d_ino_count = dqp->q_res_icount; + dst->d_spc_timer = be32_to_cpu(dqp->q_core.d_btimer); + dst->d_ino_timer = be32_to_cpu(dqp->q_core.d_itimer); + dst->d_ino_warns = be16_to_cpu(dqp->q_core.d_iwarns); + dst->d_spc_warns = be16_to_cpu(dqp->q_core.d_bwarns); + dst->d_rt_spc_hardlimit = + XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit)); + dst->d_rt_spc_softlimit = + XFS_FSB_TO_B(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit)); + dst->d_rt_space = XFS_FSB_TO_B(mp, dqp->q_res_rtbcount); + dst->d_rt_spc_timer = be32_to_cpu(dqp->q_core.d_rtbtimer); + dst->d_rt_spc_warns = be16_to_cpu(dqp->q_core.d_rtbwarns); /* * Internally, we don't reset all the timers when quota enforcement @@ -882,23 +848,23 @@ xfs_qm_scall_getquota( dqp->q_core.d_flags == XFS_DQ_GROUP) || (!XFS_IS_PQUOTA_ENFORCED(mp) && dqp->q_core.d_flags == XFS_DQ_PROJ)) { - dst->d_btimer = 0; - dst->d_itimer = 0; - dst->d_rtbtimer = 0; + dst->d_spc_timer = 0; + dst->d_ino_timer = 0; + dst->d_rt_spc_timer = 0; } #ifdef DEBUG - if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) || - (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) || - (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) && - dst->d_id != 0) { - if ((dst->d_bcount > dst->d_blk_softlimit) && - (dst->d_blk_softlimit > 0)) { - ASSERT(dst->d_btimer != 0); + if (((XFS_IS_UQUOTA_ENFORCED(mp) && type == XFS_DQ_USER) || + (XFS_IS_GQUOTA_ENFORCED(mp) && type == XFS_DQ_GROUP) || + (XFS_IS_PQUOTA_ENFORCED(mp) && type == XFS_DQ_PROJ)) && + id != 0) { + if ((dst->d_space > dst->d_spc_softlimit) && + (dst->d_spc_softlimit > 0)) { + ASSERT(dst->d_spc_timer != 0); } - if ((dst->d_icount > dst->d_ino_softlimit) && + if ((dst->d_ino_count > dst->d_ino_softlimit) && (dst->d_ino_softlimit > 0)) { - ASSERT(dst->d_itimer != 0); + ASSERT(dst->d_ino_timer != 0); } } #endif @@ -908,26 +874,6 @@ out_put: } STATIC uint -xfs_qm_export_qtype_flags( - uint flags) -{ - /* - * Can't be more than one, or none. - */ - ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) != - (FS_PROJ_QUOTA | FS_USER_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) != - (FS_PROJ_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) != - (FS_USER_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0); - - return (flags & XFS_DQ_USER) ? - FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ? - FS_PROJ_QUOTA : FS_GROUP_QUOTA; -} - -STATIC uint xfs_qm_export_flags( uint flags) { diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c index 7542bbe..6923905 100644 --- a/fs/xfs/xfs_quotaops.c +++ b/fs/xfs/xfs_quotaops.c @@ -64,19 +64,10 @@ xfs_fs_get_xstatev( return xfs_qm_scall_getqstatv(mp, fqs); } -STATIC int -xfs_fs_set_xstate( - struct super_block *sb, - unsigned int uflags, - int op) +static unsigned int +xfs_quota_flags(unsigned int uflags) { - struct xfs_mount *mp = XFS_M(sb); - unsigned int flags = 0; - - if (sb->s_flags & MS_RDONLY) - return -EROFS; - if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) - return -ENOSYS; + unsigned int flags = 0; if (uflags & FS_QUOTA_UDQ_ACCT) flags |= XFS_UQUOTA_ACCT; @@ -91,16 +82,39 @@ xfs_fs_set_xstate( if (uflags & FS_QUOTA_PDQ_ENFD) flags |= XFS_PQUOTA_ENFD; - switch (op) { - case Q_XQUOTAON: - return xfs_qm_scall_quotaon(mp, flags); - case Q_XQUOTAOFF: - if (!XFS_IS_QUOTA_ON(mp)) - return -EINVAL; - return xfs_qm_scall_quotaoff(mp, flags); - } + return flags; +} + +STATIC int +xfs_quota_enable( + struct super_block *sb, + unsigned int uflags) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (sb->s_flags & MS_RDONLY) + return -EROFS; + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + + return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags)); +} + +STATIC int +xfs_quota_disable( + struct super_block *sb, + unsigned int uflags) +{ + struct xfs_mount *mp = XFS_M(sb); + + if (sb->s_flags & MS_RDONLY) + return -EROFS; + if (!XFS_IS_QUOTA_RUNNING(mp)) + return -ENOSYS; + if (!XFS_IS_QUOTA_ON(mp)) + return -EINVAL; - return -EINVAL; + return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags)); } STATIC int @@ -131,7 +145,7 @@ STATIC int xfs_fs_get_dqblk( struct super_block *sb, struct kqid qid, - struct fs_disk_quota *fdq) + struct qc_dqblk *qdq) { struct xfs_mount *mp = XFS_M(sb); @@ -141,14 +155,14 @@ xfs_fs_get_dqblk( return -ESRCH; return xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid), - xfs_quota_type(qid.type), fdq); + xfs_quota_type(qid.type), qdq); } STATIC int xfs_fs_set_dqblk( struct super_block *sb, struct kqid qid, - struct fs_disk_quota *fdq) + struct qc_dqblk *qdq) { struct xfs_mount *mp = XFS_M(sb); @@ -160,13 +174,14 @@ xfs_fs_set_dqblk( return -ESRCH; return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid), - xfs_quota_type(qid.type), fdq); + xfs_quota_type(qid.type), qdq); } const struct quotactl_ops xfs_quotactl_operations = { .get_xstatev = xfs_fs_get_xstatev, .get_xstate = xfs_fs_get_xstate, - .set_xstate = xfs_fs_set_xstate, + .quota_enable = xfs_quota_enable, + .quota_disable = xfs_quota_disable, .rm_xquota = xfs_fs_rm_xquota, .get_dqblk = xfs_fs_get_dqblk, .set_dqblk = xfs_fs_set_dqblk, diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 19cbda1..f2449fd 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -685,7 +685,7 @@ xfs_blkdev_get( mp); if (IS_ERR(*bdevp)) { error = PTR_ERR(*bdevp); - xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); + xfs_warn(mp, "Invalid device [%s], error=%d", name, error); } return error; @@ -1111,6 +1111,11 @@ xfs_fs_statfs( statp->f_files, mp->m_maxicount); + /* If sb_icount overshot maxicount, report actual allocation */ + statp->f_files = max_t(typeof(statp->f_files), + statp->f_files, + sbp->sb_icount); + /* make sure statp->f_ffree does not underflow */ ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); statp->f_ffree = max_t(__int64_t, ffree, 0); @@ -1257,13 +1262,13 @@ xfs_fs_remount( * If this is the first remount to writeable state we * might have some superblock changes to update. */ - if (mp->m_update_flags) { - error = xfs_mount_log_sb(mp, mp->m_update_flags); + if (mp->m_update_sb) { + error = xfs_sync_sb(mp, false); if (error) { xfs_warn(mp, "failed to write sb changes"); return error; } - mp->m_update_flags = 0; + mp->m_update_sb = false; } /* @@ -1293,8 +1298,9 @@ xfs_fs_remount( /* * Second stage of a freeze. The data is already frozen so we only - * need to take care of the metadata. Once that's done write a dummy - * record to dirty the log in case of a crash while frozen. + * need to take care of the metadata. Once that's done sync the superblock + * to the log to dirty it in case of a crash while frozen. This ensures that we + * will recover the unlinked inode lists on the next mount. */ STATIC int xfs_fs_freeze( @@ -1304,7 +1310,7 @@ xfs_fs_freeze( xfs_save_resvblks(mp); xfs_quiesce_attr(mp); - return xfs_fs_log_dummy(mp); + return xfs_sync_sb(mp, true); } STATIC int diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c index 1743b9f..a0c8067 100644 --- a/fs/xfs/xfs_sysctl.c +++ b/fs/xfs/xfs_sysctl.c @@ -149,24 +149,6 @@ static struct ctl_table xfs_table[] = { .extra2 = &xfs_params.inherit_noatim.max }, { - .procname = "xfsbufd_centisecs", - .data = &xfs_params.xfs_buf_timer.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.xfs_buf_timer.min, - .extra2 = &xfs_params.xfs_buf_timer.max - }, - { - .procname = "age_buffer_centisecs", - .data = &xfs_params.xfs_buf_age.val, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &xfs_params.xfs_buf_age.min, - .extra2 = &xfs_params.xfs_buf_age.max - }, - { .procname = "inherit_nosymlinks", .data = &xfs_params.inherit_nosym.val, .maxlen = sizeof(int), diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index fa3135b..eb90cd5 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -472,6 +472,7 @@ xfs_trans_apply_sb_deltas( whole = 1; } + xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); if (whole) /* * Log the whole thing, the fields are noncontiguous. diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 0a4d4ab..7579841 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -327,9 +327,10 @@ xfs_trans_read_buf_map( return -EIO; } - if (tp) + if (tp) { _xfs_trans_bjoin(tp, bp, 1); - trace_xfs_trans_read_buf(bp->b_fspriv); + trace_xfs_trans_read_buf(bp->b_fspriv); + } *bpp = bp; return 0; |
