Have cifs_write take a cifsFileInfo pointer instead of a filp. Since cifsFileInfo holds references on the dentry, and that holds one to the inode, we can eliminate some unneeded NULL pointer checks.
Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: Suresh Jayaraman <[email protected]> Acked-by: Dave Kleikamp <[email protected]> --- fs/cifs/file.c | 51 +++++++++++++++++---------------------------------- 1 files changed, 17 insertions(+), 34 deletions(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index db38547..57fbfad 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -963,8 +963,9 @@ ssize_t cifs_user_write(struct file *file, const char __user *write_data, return total_written; } -static ssize_t cifs_write(struct file *file, const char *write_data, - size_t write_size, loff_t *poffset) +static ssize_t cifs_write(struct cifsFileInfo *open_file, + const char *write_data, size_t write_size, + loff_t *poffset) { int rc = 0; unsigned int bytes_written = 0; @@ -972,17 +973,14 @@ static ssize_t cifs_write(struct file *file, const char *write_data, struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; int xid, long_op; - struct cifsFileInfo *open_file; - struct cifsInodeInfo *cifsi = CIFS_I(file->f_path.dentry->d_inode); + struct dentry *dentry = open_file->dentry; + struct cifsInodeInfo *cifsi = CIFS_I(dentry->d_inode); - cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); + cifs_sb = CIFS_SB(dentry->d_sb); cFYI(1, "write %zd bytes to offset %lld of %s", write_size, - *poffset, file->f_path.dentry->d_name.name); + *poffset, dentry->d_name.name); - if (file->private_data == NULL) - return -EBADF; - open_file = file->private_data; pTcon = tlink_tcon(open_file->tlink); xid = GetXid(); @@ -992,15 +990,6 @@ static ssize_t cifs_write(struct file *file, const char *write_data, total_written += bytes_written) { rc = -EAGAIN; while (rc == -EAGAIN) { - if (file->private_data == NULL) { - /* file has been closed on us */ - FreeXid(xid); - /* if we have gotten here we have written some data - and blocked, and the file has been freed on us - while we blocked so return what we managed to - write */ - return total_written; - } if (open_file->closePend) { FreeXid(xid); if (total_written) @@ -1060,20 +1049,13 @@ static ssize_t cifs_write(struct file *file, const char *write_data, cifs_stats_bytes_written(pTcon, total_written); - /* since the write may have blocked check these pointers again */ - if ((file->f_path.dentry) && (file->f_path.dentry->d_inode)) { -/*BB We could make this contingent on superblock ATIME flag too */ -/* file->f_path.dentry->d_inode->i_ctime = - file->f_path.dentry->d_inode->i_mtime = CURRENT_TIME;*/ - if (total_written > 0) { - spin_lock(&file->f_path.dentry->d_inode->i_lock); - if (*poffset > file->f_path.dentry->d_inode->i_size) - i_size_write(file->f_path.dentry->d_inode, - *poffset); - spin_unlock(&file->f_path.dentry->d_inode->i_lock); - } - mark_inode_dirty_sync(file->f_path.dentry->d_inode); + if (total_written > 0) { + spin_lock(&dentry->d_inode->i_lock); + if (*poffset > dentry->d_inode->i_size) + i_size_write(dentry->d_inode, *poffset); + spin_unlock(&dentry->d_inode->i_lock); } + mark_inode_dirty_sync(dentry->d_inode); FreeXid(xid); return total_written; } @@ -1244,8 +1226,8 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to) open_file = find_writable_file(CIFS_I(mapping->host), false); if (open_file) { - bytes_written = cifs_write(open_file->pfile, write_data, - to-from, &offset); + bytes_written = cifs_write(open_file, write_data, + to - from, &offset); cifsFileInfo_put(open_file); /* Does mm or vfs already set times? */ inode->i_atime = inode->i_mtime = current_fs_time(inode->i_sb); @@ -1560,7 +1542,8 @@ static int cifs_write_end(struct file *file, struct address_space *mapping, /* BB check if anything else missing out of ppw such as updating last write time */ page_data = kmap(page); - rc = cifs_write(file, page_data + offset, copied, &pos); + rc = cifs_write(file->private_data, page_data + offset, + copied, &pos); /* if (rc < 0) should we set writebehind rc? */ kunmap(page); -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
