diff options
Diffstat (limited to 'fs/cifs/file.c')
-rw-r--r-- | fs/cifs/file.c | 97 |
1 files changed, 42 insertions, 55 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 5ed03e0..e90a1e9 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -335,7 +335,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, spin_unlock(&cifs_file_list_lock); if (fid->purge_cache) - cifs_invalidate_mapping(inode); + cifs_zap_mapping(inode); file->private_data = cfile; return cfile; @@ -392,7 +392,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) * again and get at least level II oplock. */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) - CIFS_I(inode)->invalid_mapping = true; + set_bit(CIFS_INO_INVALID_MAPPING, &cifsi->flags); cifs_set_oplock_level(cifsi, 0); } spin_unlock(&cifs_file_list_lock); @@ -1529,7 +1529,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type, */ if (!CIFS_CACHE_WRITE(CIFS_I(inode)) && CIFS_CACHE_READ(CIFS_I(inode))) { - cifs_invalidate_mapping(inode); + cifs_zap_mapping(inode); cifs_dbg(FYI, "Set no oplock for inode=%p due to mand locks\n", inode); CIFS_I(inode)->oplock = 0; @@ -2218,7 +2218,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end, file->f_path.dentry->d_name.name, datasync); if (!CIFS_CACHE_READ(CIFS_I(inode))) { - rc = cifs_invalidate_mapping(inode); + rc = cifs_zap_mapping(inode); if (rc) { cifs_dbg(FYI, "rc: %d during invalidate phase\n", rc); rc = 0; /* don't care about it in fsync */ @@ -2385,14 +2385,12 @@ cifs_uncached_retry_writev(struct cifs_writedata *wdata) } static ssize_t -cifs_iovec_write(struct file *file, const struct iovec *iov, - unsigned long nr_segs, loff_t *poffset) +cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset) { unsigned long nr_pages, i; size_t bytes, copied, len, cur_len; ssize_t total_written = 0; loff_t offset; - struct iov_iter it; struct cifsFileInfo *open_file; struct cifs_tcon *tcon; struct cifs_sb_info *cifs_sb; @@ -2401,14 +2399,16 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, int rc; pid_t pid; - len = iov_length(iov, nr_segs); - if (!len) - return 0; - + len = iov_iter_count(from); rc = generic_write_checks(file, poffset, &len, 0); if (rc) return rc; + if (!len) + return 0; + + iov_iter_truncate(from, len); + INIT_LIST_HEAD(&wdata_list); cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); open_file = file->private_data; @@ -2424,7 +2424,6 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, else pid = current->tgid; - iov_iter_init(&it, iov, nr_segs, len, 0); do { size_t save_len; @@ -2444,11 +2443,10 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, save_len = cur_len; for (i = 0; i < nr_pages; i++) { - bytes = min_t(const size_t, cur_len, PAGE_SIZE); - copied = iov_iter_copy_from_user(wdata->pages[i], &it, - 0, bytes); + bytes = min_t(size_t, cur_len, PAGE_SIZE); + copied = copy_page_from_iter(wdata->pages[i], 0, bytes, + from); cur_len -= copied; - iov_iter_advance(&it, copied); /* * If we didn't copy as much as we expected, then that * may mean we trod into an unmapped area. Stop copying @@ -2546,11 +2544,11 @@ restart_loop: return total_written ? total_written : (ssize_t)rc; } -ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) { ssize_t written; struct inode *inode; + loff_t pos = iocb->ki_pos; inode = file_inode(iocb->ki_filp); @@ -2560,9 +2558,9 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov, * write request. */ - written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos); + written = cifs_iovec_write(iocb->ki_filp, from, &pos); if (written > 0) { - CIFS_I(inode)->invalid_mapping = true; + set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags); iocb->ki_pos = pos; } @@ -2570,8 +2568,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov, } static ssize_t -cifs_writev(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +cifs_writev(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data; @@ -2589,10 +2586,10 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov, mutex_lock(&inode->i_mutex); if (file->f_flags & O_APPEND) lock_pos = i_size_read(inode); - if (!cifs_find_lock_conflict(cfile, lock_pos, iov_length(iov, nr_segs), + if (!cifs_find_lock_conflict(cfile, lock_pos, iov_iter_count(from), server->vals->exclusive_lock_type, NULL, CIFS_WRITE_OP)) { - rc = __generic_file_aio_write(iocb, iov, nr_segs); + rc = __generic_file_write_iter(iocb, from); mutex_unlock(&inode->i_mutex); if (rc > 0) { @@ -2610,8 +2607,7 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov, } ssize_t -cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from) { struct inode *inode = file_inode(iocb->ki_filp); struct cifsInodeInfo *cinode = CIFS_I(inode); @@ -2629,11 +2625,10 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov, if (cap_unix(tcon->ses) && (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) { - written = generic_file_aio_write( - iocb, iov, nr_segs, pos); + written = generic_file_write_iter(iocb, from); goto out; } - written = cifs_writev(iocb, iov, nr_segs, pos); + written = cifs_writev(iocb, from); goto out; } /* @@ -2642,14 +2637,14 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov, * affected pages because it may cause a error with mandatory locks on * these pages but not on the region from pos to ppos+len-1. */ - written = cifs_user_writev(iocb, iov, nr_segs, pos); + written = cifs_user_writev(iocb, from); if (written > 0 && CIFS_CACHE_READ(cinode)) { /* * Windows 7 server can delay breaking level2 oplock if a write * request comes - break it on the client to prevent reading * an old data. */ - cifs_invalidate_mapping(inode); + cifs_zap_mapping(inode); cifs_dbg(FYI, "Set no oplock for inode=%p after a write operation\n", inode); cinode->oplock = 0; @@ -2831,32 +2826,25 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server, return total_read > 0 ? total_read : result; } -ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to) { struct file *file = iocb->ki_filp; ssize_t rc; size_t len, cur_len; ssize_t total_read = 0; - loff_t offset = pos; + loff_t offset = iocb->ki_pos; unsigned int npages; struct cifs_sb_info *cifs_sb; struct cifs_tcon *tcon; struct cifsFileInfo *open_file; struct cifs_readdata *rdata, *tmp; struct list_head rdata_list; - struct iov_iter to; pid_t pid; - if (!nr_segs) - return 0; - - len = iov_length(iov, nr_segs); + len = iov_iter_count(to); if (!len) return 0; - iov_iter_init(&to, iov, nr_segs, len, 0); - INIT_LIST_HEAD(&rdata_list); cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); open_file = file->private_data; @@ -2914,7 +2902,7 @@ error: if (!list_empty(&rdata_list)) rc = 0; - len = iov_iter_count(&to); + len = iov_iter_count(to); /* the loop below should proceed in the order of increasing offsets */ list_for_each_entry_safe(rdata, tmp, &rdata_list, list) { again: @@ -2931,7 +2919,7 @@ error: goto again; } } else { - rc = cifs_readdata_to_iov(rdata, &to); + rc = cifs_readdata_to_iov(rdata, to); } } @@ -2939,7 +2927,7 @@ error: kref_put(&rdata->refcount, cifs_uncached_readdata_release); } - total_read = len - iov_iter_count(&to); + total_read = len - iov_iter_count(to); cifs_stats_bytes_read(tcon, total_read); @@ -2948,15 +2936,14 @@ error: rc = 0; if (total_read) { - iocb->ki_pos = pos + total_read; + iocb->ki_pos += total_read; return total_read; } return rc; } ssize_t -cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to) { struct inode *inode = file_inode(iocb->ki_filp); struct cifsInodeInfo *cinode = CIFS_I(inode); @@ -2975,22 +2962,22 @@ cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov, * pos+len-1. */ if (!CIFS_CACHE_READ(cinode)) - return cifs_user_readv(iocb, iov, nr_segs, pos); + return cifs_user_readv(iocb, to); if (cap_unix(tcon->ses) && (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) - return generic_file_aio_read(iocb, iov, nr_segs, pos); + return generic_file_read_iter(iocb, to); /* * We need to hold the sem to be sure nobody modifies lock list * with a brlock that prevents reading. */ down_read(&cinode->lock_sem); - if (!cifs_find_lock_conflict(cfile, pos, iov_length(iov, nr_segs), + if (!cifs_find_lock_conflict(cfile, iocb->ki_pos, iov_iter_count(to), tcon->ses->server->vals->shared_lock_type, NULL, CIFS_READ_OP)) - rc = generic_file_aio_read(iocb, iov, nr_segs, pos); + rc = generic_file_read_iter(iocb, to); up_read(&cinode->lock_sem); return rc; } @@ -3112,7 +3099,7 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) xid = get_xid(); if (!CIFS_CACHE_READ(CIFS_I(inode))) { - rc = cifs_invalidate_mapping(inode); + rc = cifs_zap_mapping(inode); if (rc) return rc; } @@ -3670,7 +3657,7 @@ void cifs_oplock_break(struct work_struct *work) if (!CIFS_CACHE_READ(cinode)) { rc = filemap_fdatawait(inode->i_mapping); mapping_set_error(inode->i_mapping, rc); - cifs_invalidate_mapping(inode); + cifs_zap_mapping(inode); } cifs_dbg(FYI, "Oplock flush inode %p rc %d\n", inode, rc); } @@ -3703,8 +3690,8 @@ void cifs_oplock_break(struct work_struct *work) * Direct IO is not yet supported in the cached mode. */ static ssize_t -cifs_direct_io(int rw, struct kiocb *iocb, const struct iovec *iov, - loff_t pos, unsigned long nr_segs) +cifs_direct_io(int rw, struct kiocb *iocb, struct iov_iter *iter, + loff_t pos) { /* * FIXME |