diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 446 |
1 files changed, 322 insertions, 124 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index d546d8c..5c4ab9c 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -58,9 +58,10 @@ #include "inode-map.h" #include "backref.h" #include "hash.h" +#include "props.h" struct btrfs_iget_args { - u64 ino; + struct btrfs_key *location; struct btrfs_root *root; }; @@ -125,13 +126,12 @@ static int btrfs_init_inode_security(struct btrfs_trans_handle *trans, * no overlapping inline items exist in the btree */ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, + struct btrfs_path *path, int extent_inserted, struct btrfs_root *root, struct inode *inode, u64 start, size_t size, size_t compressed_size, int compress_type, struct page **compressed_pages) { - struct btrfs_key key; - struct btrfs_path *path; struct extent_buffer *leaf; struct page *page = NULL; char *kaddr; @@ -140,29 +140,29 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, int err = 0; int ret; size_t cur_size = size; - size_t datasize; unsigned long offset; if (compressed_size && compressed_pages) cur_size = compressed_size; - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; + inode_add_bytes(inode, size); - path->leave_spinning = 1; + if (!extent_inserted) { + struct btrfs_key key; + size_t datasize; - key.objectid = btrfs_ino(inode); - key.offset = start; - btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY); - datasize = btrfs_file_extent_calc_inline_size(cur_size); + key.objectid = btrfs_ino(inode); + key.offset = start; + btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY); - inode_add_bytes(inode, size); - ret = btrfs_insert_empty_item(trans, root, path, &key, - datasize); - if (ret) { - err = ret; - goto fail; + datasize = btrfs_file_extent_calc_inline_size(cur_size); + path->leave_spinning = 1; + ret = btrfs_insert_empty_item(trans, root, path, &key, + datasize); + if (ret) { + err = ret; + goto fail; + } } leaf = path->nodes[0]; ei = btrfs_item_ptr(leaf, path->slots[0], @@ -203,7 +203,7 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, page_cache_release(page); } btrfs_mark_buffer_dirty(leaf); - btrfs_free_path(path); + btrfs_release_path(path); /* * we're an inline extent, so nobody can @@ -219,7 +219,6 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, return ret; fail: - btrfs_free_path(path); return err; } @@ -242,6 +241,9 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, u64 aligned_end = ALIGN(end, root->sectorsize); u64 data_len = inline_len; int ret; + struct btrfs_path *path; + int extent_inserted = 0; + u32 extent_item_size; if (compressed_size) data_len = compressed_size; @@ -256,12 +258,27 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, return 1; } + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + trans = btrfs_join_transaction(root); - if (IS_ERR(trans)) + if (IS_ERR(trans)) { + btrfs_free_path(path); return PTR_ERR(trans); + } trans->block_rsv = &root->fs_info->delalloc_block_rsv; - ret = btrfs_drop_extents(trans, root, inode, start, aligned_end, 1); + if (compressed_size && compressed_pages) + extent_item_size = btrfs_file_extent_calc_inline_size( + compressed_size); + else + extent_item_size = btrfs_file_extent_calc_inline_size( + inline_len); + + ret = __btrfs_drop_extents(trans, root, inode, path, + start, aligned_end, NULL, + 1, 1, extent_item_size, &extent_inserted); if (ret) { btrfs_abort_transaction(trans, root, ret); goto out; @@ -269,7 +286,8 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, if (isize > actual_end) inline_len = min_t(u64, isize, actual_end); - ret = insert_inline_extent(trans, root, inode, start, + ret = insert_inline_extent(trans, path, extent_inserted, + root, inode, start, inline_len, compressed_size, compress_type, compressed_pages); if (ret && ret != -ENOSPC) { @@ -284,6 +302,7 @@ static noinline int cow_file_range_inline(struct btrfs_root *root, btrfs_delalloc_release_metadata(inode, end + 1 - start); btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0); out: + btrfs_free_path(path); btrfs_end_transaction(trans, root); return ret; } @@ -1262,7 +1281,8 @@ next_slot: nocow = 1; } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) { extent_end = found_key.offset + - btrfs_file_extent_inline_len(leaf, fi); + btrfs_file_extent_inline_len(leaf, + path->slots[0], fi); extent_end = ALIGN(extent_end, root->sectorsize); } else { BUG_ON(1); @@ -1841,14 +1861,13 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_key ins; + int extent_inserted = 0; int ret; path = btrfs_alloc_path(); if (!path) return -ENOMEM; - path->leave_spinning = 1; - /* * we may be replacing one extent in the tree with another. * The new extent is pinned in the extent map, and we don't want @@ -1858,17 +1877,23 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, * the caller is expected to unpin it and allow it to be merged * with the others. */ - ret = btrfs_drop_extents(trans, root, inode, file_pos, - file_pos + num_bytes, 0); + ret = __btrfs_drop_extents(trans, root, inode, path, file_pos, + file_pos + num_bytes, NULL, 0, + 1, sizeof(*fi), &extent_inserted); if (ret) goto out; - ins.objectid = btrfs_ino(inode); - ins.offset = file_pos; - ins.type = BTRFS_EXTENT_DATA_KEY; - ret = btrfs_insert_empty_item(trans, root, path, &ins, sizeof(*fi)); - if (ret) - goto out; + if (!extent_inserted) { + ins.objectid = btrfs_ino(inode); + ins.offset = file_pos; + ins.type = BTRFS_EXTENT_DATA_KEY; + + path->leave_spinning = 1; + ret = btrfs_insert_empty_item(trans, root, path, &ins, + sizeof(*fi)); + if (ret) + goto out; + } leaf = path->nodes[0]; fi = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_file_extent_item); @@ -2290,7 +2315,7 @@ again: u64 extent_len; struct btrfs_key found_key; - ret = btrfs_search_slot(trans, root, &key, path, 1, 1); + ret = btrfs_search_slot(trans, root, &key, path, 0, 1); if (ret < 0) goto out_free_path; @@ -2543,12 +2568,6 @@ out_kfree: return NULL; } -/* - * helper function for btrfs_finish_ordered_io, this - * just reads in some of the csum leaves to prime them into ram - * before we start the transaction. It limits the amount of btree - * reads required while inside the transaction. - */ /* as ordered data IO finishes, this gets called so we can finish * an ordered extent if the range of bytes in the file it covers are * fully written. @@ -3248,7 +3267,8 @@ out: * slot is the slot the inode is in, objectid is the objectid of the inode */ static noinline int acls_after_inode_item(struct extent_buffer *leaf, - int slot, u64 objectid) + int slot, u64 objectid, + int *first_xattr_slot) { u32 nritems = btrfs_header_nritems(leaf); struct btrfs_key found_key; @@ -3264,6 +3284,7 @@ static noinline int acls_after_inode_item(struct extent_buffer *leaf, } slot++; + *first_xattr_slot = -1; while (slot < nritems) { btrfs_item_key_to_cpu(leaf, &found_key, slot); @@ -3273,6 +3294,8 @@ static noinline int acls_after_inode_item(struct extent_buffer *leaf, /* we found an xattr, assume we've got an acl */ if (found_key.type == BTRFS_XATTR_ITEM_KEY) { + if (*first_xattr_slot == -1) + *first_xattr_slot = slot; if (found_key.offset == xattr_access || found_key.offset == xattr_default) return 1; @@ -3301,6 +3324,8 @@ static noinline int acls_after_inode_item(struct extent_buffer *leaf, * something larger than an xattr. We have to assume the inode * has acls */ + if (*first_xattr_slot == -1) + *first_xattr_slot = slot; return 1; } @@ -3315,10 +3340,12 @@ static void btrfs_read_locked_inode(struct inode *inode) struct btrfs_timespec *tspec; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_key location; + unsigned long ptr; int maybe_acls; u32 rdev; int ret; bool filled = false; + int first_xattr_slot; ret = btrfs_fill_inode(inode, &rdev); if (!ret) @@ -3328,7 +3355,6 @@ static void btrfs_read_locked_inode(struct inode *inode) if (!path) goto make_bad; - path->leave_spinning = 1; memcpy(&location, &BTRFS_I(inode)->location, sizeof(location)); ret = btrfs_lookup_inode(NULL, root, path, &location, 0); @@ -3338,7 +3364,7 @@ static void btrfs_read_locked_inode(struct inode *inode) leaf = path->nodes[0]; if (filled) - goto cache_acl; + goto cache_index; inode_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_inode_item); @@ -3381,18 +3407,51 @@ static void btrfs_read_locked_inode(struct inode *inode) BTRFS_I(inode)->index_cnt = (u64)-1; BTRFS_I(inode)->flags = btrfs_inode_flags(leaf, inode_item); + +cache_index: + path->slots[0]++; + if (inode->i_nlink != 1 || + path->slots[0] >= btrfs_header_nritems(leaf)) + goto cache_acl; + + btrfs_item_key_to_cpu(leaf, &location, path->slots[0]); + if (location.objectid != btrfs_ino(inode)) + goto cache_acl; + + ptr = btrfs_item_ptr_offset(leaf, path->slots[0]); + if (location.type == BTRFS_INODE_REF_KEY) { + struct btrfs_inode_ref *ref; + + ref = (struct btrfs_inode_ref *)ptr; + BTRFS_I(inode)->dir_index = btrfs_inode_ref_index(leaf, ref); + } else if (location.type == BTRFS_INODE_EXTREF_KEY) { + struct btrfs_inode_extref *extref; + + extref = (struct btrfs_inode_extref *)ptr; + BTRFS_I(inode)->dir_index = btrfs_inode_extref_index(leaf, + extref); + } cache_acl: /* * try to precache a NULL acl entry for files that don't have * any xattrs or acls */ maybe_acls = acls_after_inode_item(leaf, path->slots[0], - btrfs_ino(inode)); + btrfs_ino(inode), &first_xattr_slot); + if (first_xattr_slot != -1) { + path->slots[0] = first_xattr_slot; + ret = btrfs_load_inode_props(inode, path); + if (ret) + btrfs_err(root->fs_info, + "error loading props for ino %llu (root %llu): %d\n", + btrfs_ino(inode), + root->root_key.objectid, ret); + } + btrfs_free_path(path); + if (!maybe_acls) cache_no_acl(inode); - btrfs_free_path(path); - switch (inode->i_mode & S_IFMT) { case S_IFREG: inode->i_mapping->a_ops = &btrfs_aops; @@ -3496,7 +3555,6 @@ static noinline int btrfs_update_inode_item(struct btrfs_trans_handle *trans, goto failed; } - btrfs_unlock_up_safe(path, 1); leaf = path->nodes[0]; inode_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_inode_item); @@ -3593,6 +3651,24 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans, goto err; btrfs_release_path(path); + /* + * If we don't have dir index, we have to get it by looking up + * the inode ref, since we get the inode ref, remove it directly, + * it is unnecessary to do delayed deletion. + * + * But if we have dir index, needn't search inode ref to get it. + * Since the inode ref is close to the inode item, it is better + * that we delay to delete it, and just do this deletion when + * we update the inode item. + */ + if (BTRFS_I(inode)->dir_index) { + ret = btrfs_delayed_delete_inode_ref(inode); + if (!ret) { + index = BTRFS_I(inode)->dir_index; + goto skip_backref; + } + } + ret = btrfs_del_inode_ref(trans, root, name, name_len, ino, dir_ino, &index); if (ret) { @@ -3602,7 +3678,7 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans, btrfs_abort_transaction(trans, root, ret); goto err; } - +skip_backref: ret = btrfs_delete_delayed_dir_index(trans, root, dir, index); if (ret) { btrfs_abort_transaction(trans, root, ret); @@ -3948,7 +4024,7 @@ search_again: btrfs_file_extent_num_bytes(leaf, fi); } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) { item_end += btrfs_file_extent_inline_len(leaf, - fi); + path->slots[0], fi); } item_end--; } @@ -4018,6 +4094,12 @@ search_again: inode_sub_bytes(inode, item_end + 1 - new_size); } + + /* + * update the ram bytes to properly reflect + * the new size of our item + */ + btrfs_set_file_extent_ram_bytes(leaf, fi, size); size = btrfs_file_extent_calc_inline_size(size); btrfs_truncate_item(root, path, size, 1); @@ -4203,6 +4285,49 @@ out: return ret; } +static int maybe_insert_hole(struct btrfs_root *root, struct inode *inode, + u64 offset, u64 len) +{ + struct btrfs_trans_handle *trans; + int ret; + + /* + * Still need to make sure the inode looks like it's been updated so + * that any holes get logged if we fsync. + */ + if (btrfs_fs_incompat(root->fs_info, NO_HOLES)) { + BTRFS_I(inode)->last_trans = root->fs_info->generation; + BTRFS_I(inode)->last_sub_trans = root->log_transid; + BTRFS_I(inode)->last_log_commit = root->last_log_commit; + return 0; + } + + /* + * 1 - for the one we're dropping + * 1 - for the one we're adding + * 1 - for updating the inode. + */ + trans = btrfs_start_transaction(root, 3); + if (IS_ERR(trans)) + return PTR_ERR(trans); + + ret = btrfs_drop_extents(trans, root, inode, offset, offset + len, 1); + if (ret) { + btrfs_abort_transaction(trans, root, ret); + btrfs_end_transaction(trans, root); + return ret; + } + + ret = btrfs_insert_file_extent(trans, root, btrfs_ino(inode), offset, + 0, 0, len, 0, len, 0, 0, 0); + if (ret) + btrfs_abort_transaction(trans, root, ret); + else + btrfs_update_inode(trans, root, inode); + btrfs_end_transaction(trans, root); + return ret; +} + /* * This function puts in dummy file extents for the area we're creating a hole * for. So if we are truncating this file to a larger size we need to insert @@ -4211,7 +4336,6 @@ out: */ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) { - struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct extent_map *em = NULL; @@ -4266,31 +4390,10 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) struct extent_map *hole_em; hole_size = last_byte - cur_offset; - trans = btrfs_start_transaction(root, 3); - if (IS_ERR(trans)) { - err = PTR_ERR(trans); - break; - } - - err = btrfs_drop_extents(trans, root, inode, - cur_offset, - cur_offset + hole_size, 1); - if (err) { - btrfs_abort_transaction(trans, root, err); - btrfs_end_transaction(trans, root); - break; - } - - err = btrfs_insert_file_extent(trans, root, - btrfs_ino(inode), cur_offset, 0, - 0, hole_size, 0, hole_size, - 0, 0, 0); - if (err) { - btrfs_abort_transaction(trans, root, err); - btrfs_end_transaction(trans, root); + err = maybe_insert_hole(root, inode, cur_offset, + hole_size); + if (err) break; - } - btrfs_drop_extent_cache(inode, cur_offset, cur_offset + hole_size - 1, 0); hole_em = alloc_extent_map(); @@ -4309,7 +4412,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) hole_em->ram_bytes = hole_size; hole_em->bdev = root->fs_info->fs_devices->latest_bdev; hole_em->compress_type = BTRFS_COMPRESS_NONE; - hole_em->generation = trans->transid; + hole_em->generation = root->fs_info->generation; while (1) { write_lock(&em_tree->lock); @@ -4322,17 +4425,14 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size) hole_size - 1, 0); } free_extent_map(hole_em); -next: - btrfs_update_inode(trans, root, inode); - btrfs_end_transaction(trans, root); } +next: free_extent_map(em); em = NULL; cur_offset = last_byte; if (cur_offset >= block_end) break; } - free_extent_map(em); unlock_extent_cached(io_tree, hole_start, block_end - 1, &cached_state, GFP_NOFS); @@ -4474,6 +4574,64 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) return err; } +/* + * While truncating the inode pages during eviction, we get the VFS calling + * btrfs_invalidatepage() against each page of the inode. This is slow because + * the calls to btrfs_invalidatepage() result in a huge amount of calls to + * lock_extent_bits() and clear_extent_bit(), which keep merging and splitting + * extent_state structures over and over, wasting lots of time. + * + * Therefore if the inode is being evicted, let btrfs_invalidatepage() skip all + * those expensive operations on a per page basis and do only the ordered io + * finishing, while we release here the extent_map and extent_state structures, + * without the excessive merging and splitting. + */ +static void evict_inode_truncate_pages(struct inode *inode) +{ + struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; + struct extent_map_tree *map_tree = &BTRFS_I(inode)->extent_tree; + struct rb_node *node; + + ASSERT(inode->i_state & I_FREEING); + truncate_inode_pages(&inode->i_data, 0); + + write_lock(&map_tree->lock); + while (!RB_EMPTY_ROOT(&map_tree->map)) { + struct extent_map *em; + + node = rb_first(&map_tree->map); + em = rb_entry(node, struct extent_map, rb_node); + clear_bit(EXTENT_FLAG_PINNED, &em->flags); + clear_bit(EXTENT_FLAG_LOGGING, &em->flags); + remove_extent_mapping(map_tree, em); + free_extent_map(em); + } + write_unlock(&map_tree->lock); + + spin_lock(&io_tree->lock); + while (!RB_EMPTY_ROOT(&io_tree->state)) { + struct extent_state *state; + struct extent_state *cached_state = NULL; + + node = rb_first(&io_tree->state); + state = rb_entry(node, struct extent_state, rb_node); + atomic_inc(&state->refs); + spin_unlock(&io_tree->lock); + + lock_extent_bits(io_tree, state->start, state->end, + 0, &cached_state); + clear_extent_bit(io_tree, state->start, state->end, + EXTENT_LOCKED | EXTENT_DIRTY | + EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING | + EXTENT_DEFRAG, 1, 1, + &cached_state, GFP_NOFS); + free_extent_state(state); + + spin_lock(&io_tree->lock); + } + spin_unlock(&io_tree->lock); +} + void btrfs_evict_inode(struct inode *inode) { struct btrfs_trans_handle *trans; @@ -4484,7 +4642,8 @@ void btrfs_evict_inode(struct inode *inode) trace_btrfs_inode_evict(inode); - truncate_inode_pages(&inode->i_data, 0); + evict_inode_truncate_pages(inode); + if (inode->i_nlink && ((btrfs_root_refs(&root->root_item) != 0 && root->root_key.objectid != BTRFS_ROOT_TREE_OBJECTID) || @@ -4659,9 +4818,9 @@ static int fixup_tree_root_location(struct btrfs_root *root, } err = -ENOENT; - ret = btrfs_find_root_ref(root->fs_info->tree_root, path, - BTRFS_I(dir)->root->root_key.objectid, - location->objectid); + ret = btrfs_find_item(root->fs_info->tree_root, path, + BTRFS_I(dir)->root->root_key.objectid, + location->objectid, BTRFS_ROOT_REF_KEY, NULL); if (ret) { if (ret < 0) err = ret; @@ -4822,7 +4981,9 @@ again: static int btrfs_init_locked_inode(struct inode *inode, void *p) { struct btrfs_iget_args *args = p; - inode->i_ino = args->ino; + inode->i_ino = args->location->objectid; + memcpy(&BTRFS_I(inode)->location, args->location, + sizeof(*args->location)); BTRFS_I(inode)->root = args->root; return 0; } @@ -4830,19 +4991,19 @@ static int btrfs_init_locked_inode(struct inode *inode, void *p) static int btrfs_find_actor(struct inode *inode, void *opaque) { struct btrfs_iget_args *args = opaque; - return args->ino == btrfs_ino(inode) && + return args->location->objectid == BTRFS_I(inode)->location.objectid && args->root == BTRFS_I(inode)->root; } static struct inode *btrfs_iget_locked(struct super_block *s, - u64 objectid, + struct btrfs_key *location, struct btrfs_root *root) { struct inode *inode; struct btrfs_iget_args args; - unsigned long hashval = btrfs_inode_hash(objectid, root); + unsigned long hashval = btrfs_inode_hash(location->objectid, root); - args.ino = objectid; + args.location = location; args.root = root; inode = iget5_locked(s, hashval, btrfs_find_actor, @@ -4859,13 +5020,11 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, { struct inode *inode; - inode = btrfs_iget_locked(s, location->objectid, root); + inode = btrfs_iget_locked(s, location, root); if (!inode) return ERR_PTR(-ENOMEM); if (inode->i_state & I_NEW) { - BTRFS_I(inode)->root = root; - memcpy(&BTRFS_I(inode)->location, location, sizeof(*location)); btrfs_read_locked_inode(inode); if (!is_bad_inode(inode)) { inode_tree_add(inode); @@ -4921,7 +5080,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) return ERR_PTR(ret); if (location.objectid == 0) - return NULL; + return ERR_PTR(-ENOENT); if (location.type == BTRFS_INODE_ITEM_KEY) { inode = btrfs_iget(dir->i_sb, &location, root, NULL); @@ -4985,10 +5144,17 @@ static void btrfs_dentry_release(struct dentry *dentry) static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { - struct dentry *ret; + struct inode *inode; - ret = d_splice_alias(btrfs_lookup_dentry(dir, dentry), dentry); - return ret; + inode = btrfs_lookup_dentry(dir, dentry); + if (IS_ERR(inode)) { + if (PTR_ERR(inode) == -ENOENT) + inode = NULL; + else + return ERR_CAST(inode); + } + + return d_splice_alias(inode, dentry); } unsigned char btrfs_filetype_table[] = { @@ -5358,7 +5524,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, u32 sizes[2]; unsigned long ptr; int ret; - int owner; path = btrfs_alloc_path(); if (!path) @@ -5392,6 +5557,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, * number */ BTRFS_I(inode)->index_cnt = 2; + BTRFS_I(inode)->dir_index = *index; BTRFS_I(inode)->root = root; BTRFS_I(inode)->generation = trans->transid; inode->i_generation = BTRFS_I(inode)->generation; @@ -5404,11 +5570,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, */ set_bit(BTRFS_INODE_NEEDS_FULL_SYNC, &BTRFS_I(inode)->runtime_flags); - if (S_ISDIR(mode)) - owner = 0; - else - owner = 1; - key[0].objectid = objectid; btrfs_set_key_type(&key[0], BTRFS_INODE_ITEM_KEY); key[0].offset = 0; @@ -5473,6 +5634,12 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, btrfs_update_root_times(trans, root); + ret = btrfs_inode_inherit_props(trans, inode, dir); + if (ret) + btrfs_err(root->fs_info, + "error inheriting props for ino %llu (root %llu): %d", + btrfs_ino(inode), root->root_key.objectid, ret); + return inode; fail: if (dir) @@ -5741,6 +5908,8 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, goto fail; } + /* There are several dir indexes for this inode, clear the cache. */ + BTRFS_I(inode)->dir_index = 0ULL; inc_nlink(inode); inode_inc_iversion(inode); inode->i_ctime = CURRENT_TIME; @@ -6004,7 +6173,7 @@ again: btrfs_file_extent_num_bytes(leaf, item); } else if (found_type == BTRFS_FILE_EXTENT_INLINE) { size_t size; - size = btrfs_file_extent_inline_len(leaf, item); + size = btrfs_file_extent_inline_len(leaf, path->slots[0], item); extent_end = ALIGN(extent_start + size, root->sectorsize); } next: @@ -6073,7 +6242,7 @@ next: goto out; } - size = btrfs_file_extent_inline_len(leaf, item); + size = btrfs_file_extent_inline_len(leaf, path->slots[0], item); extent_offset = page_offset(page) + pg_offset - extent_start; copy_size = min_t(u64, PAGE_CACHE_SIZE - pg_offset, size - extent_offset); @@ -6390,6 +6559,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, int slot; int found_type; bool nocow = (BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW); + path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -6433,6 +6603,10 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, if (!nocow && found_type == BTRFS_FILE_EXTENT_REG) goto out; + extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi); + if (extent_end <= offset) + goto out; + disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi); if (disk_bytenr == 0) goto out; @@ -6450,8 +6624,6 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, *ram_bytes = btrfs_file_extent_ram_bytes(leaf, fi); } - extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi); - if (btrfs_extent_readonly(root, disk_bytenr)) goto out; btrfs_release_path(path); @@ -6895,8 +7067,8 @@ static void btrfs_end_dio_bio(struct bio *bio, int err) struct btrfs_dio_private *dip = bio->bi_private; if (err) { - printk(KERN_ERR "btrfs direct IO failed ino %llu rw %lu " - "sector %#Lx len %u err no %d\n", + btrfs_err(BTRFS_I(dip->inode)->root->fs_info, + "direct IO failed ino %llu rw %lu sector %#Lx len %u err no %d", btrfs_ino(dip->inode), bio->bi_rw, (unsigned long long)bio->bi_iter.bi_sector, bio->bi_iter.bi_size, err); @@ -7370,6 +7542,7 @@ static void btrfs_invalidatepage(struct page *page, unsigned int offset, struct extent_state *cached_state = NULL; u64 page_start = page_offset(page); u64 page_end = page_start + PAGE_CACHE_SIZE - 1; + int inode_evicting = inode->i_state & I_FREEING; /* * we have the page locked, so new writeback can't start, @@ -7385,17 +7558,21 @@ static void btrfs_invalidatepage(struct page *page, unsigned int offset, btrfs_releasepage(page, GFP_NOFS); return; } - lock_extent_bits(tree, page_start, page_end, 0, &cached_state); - ordered = btrfs_lookup_ordered_extent(inode, page_offset(page)); + + if (!inode_evicting) + lock_extent_bits(tree, page_start, page_end, 0, &cached_state); + ordered = btrfs_lookup_ordered_extent(inode, page_start); if (ordered) { /* * IO on this page will never be started, so we need * to account for any ordered extents now */ - clear_extent_bit(tree, page_start, page_end, - EXTENT_DIRTY | EXTENT_DELALLOC | - EXTENT_LOCKED | EXTENT_DO_ACCOUNTING | - EXTENT_DEFRAG, 1, 0, &cached_state, GFP_NOFS); + if (!inode_evicting) + clear_extent_bit(tree, page_start, page_end, + EXTENT_DIRTY | EXTENT_DELALLOC | + EXTENT_LOCKED | EXTENT_DO_ACCOUNTING | + EXTENT_DEFRAG, 1, 0, &cached_state, + GFP_NOFS); /* * whoever cleared the private bit is responsible * for the finish_ordered_io @@ -7419,14 +7596,22 @@ static void btrfs_invalidatepage(struct page *page, unsigned int offset, btrfs_finish_ordered_io(ordered); } btrfs_put_ordered_extent(ordered); - cached_state = NULL; - lock_extent_bits(tree, page_start, page_end, 0, &cached_state); + if (!inode_evicting) { + cached_state = NULL; + lock_extent_bits(tree, page_start, page_end, 0, + &cached_state); + } + } + + if (!inode_evicting) { + clear_extent_bit(tree, page_start, page_end, + EXTENT_LOCKED | EXTENT_DIRTY | + EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING | + EXTENT_DEFRAG, 1, 1, + &cached_state, GFP_NOFS); + + __btrfs_releasepage(page, GFP_NOFS); } - clear_extent_bit(tree, page_start, page_end, - EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC | - EXTENT_DO_ACCOUNTING | EXTENT_DEFRAG, 1, 1, - &cached_state, GFP_NOFS); - __btrfs_releasepage(page, GFP_NOFS); ClearPageChecked(page); if (PagePrivate(page)) { @@ -7736,7 +7921,9 @@ out: * create a new subvolume directory/inode (helper for the ioctl). */ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, - struct btrfs_root *new_root, u64 new_dirid) + struct btrfs_root *new_root, + struct btrfs_root *parent_root, + u64 new_dirid) { struct inode *inode; int err; @@ -7754,6 +7941,12 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, set_nlink(inode, 1); btrfs_i_size_write(inode, 0); + err = btrfs_subvol_inherit_props(trans, new_root, parent_root); + if (err) + btrfs_err(new_root->fs_info, + "error inheriting subvolume %llu properties: %d\n", + new_root->root_key.objectid, err); + err = btrfs_update_inode(trans, new_root, inode); iput(inode); @@ -7779,6 +7972,7 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) ei->flags = 0; ei->csum_bytes = 0; ei->index_cnt = (u64)-1; + ei->dir_index = 0; ei->last_unlink_trans = 0; ei->last_log_commit = 0; @@ -8066,6 +8260,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (ret) goto out_fail; + BTRFS_I(old_inode)->dir_index = 0ULL; if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) { /* force full log commit if subvolume involved. */ root->fs_info->last_trans_log_full_commit = trans->transid; @@ -8154,6 +8349,9 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, goto out_fail; } + if (old_inode->i_nlink == 1) + BTRFS_I(old_inode)->dir_index = index; + if (old_ino != BTRFS_FIRST_FREE_OBJECTID) { struct dentry *parent = new_dentry->d_parent; btrfs_log_new_name(trans, old_inode, old_dir, parent); @@ -8289,7 +8487,7 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) { int ret; - if (root->fs_info->sb->s_flags & MS_RDONLY) + if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) return -EROFS; ret = __start_delalloc_inodes(root, delay_iput); @@ -8315,7 +8513,7 @@ int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput) struct list_head splice; int ret; - if (fs_info->sb->s_flags & MS_RDONLY) + if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) return -EROFS; INIT_LIST_HEAD(&splice); |
