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ntfs: Use new syncing helpers and update comments

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Use new syncing helpers in .write and .aio_write functions. Also
remove superfluous syncing in ntfs_file_buffered_write() and update
comments about generic_osync_inode().

CC: Anton Altaparmakov <aia21@cantab.net>
CC: linux-ntfs-dev@lists.sourceforge.net
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2009-08-18 18:13:58 +02:00
parent 0d34ec62e1
commit ebbbf757c6
2 changed files with 10 additions and 19 deletions
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16
fs/ntfs/file.c
View file

@ -2076,14 +2076,6 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
*ppos = pos;
if (cached_page)
page_cache_release(cached_page);
/* For now, when the user asks for O_SYNC, we actually give O_DSYNC. */
if (likely(!status)) {
if (unlikely((file->f_flags & O_SYNC) || IS_SYNC(vi))) {
if (!mapping->a_ops->writepage || !is_sync_kiocb(iocb))
status = generic_osync_inode(vi, mapping,
OSYNC_METADATA|OSYNC_DATA);
}
}
pagevec_lru_add_file(&lru_pvec);
ntfs_debug("Done. Returning %s (written 0x%lx, status %li).",
written ? "written" : "status", (unsigned long)written,
@ -2145,8 +2137,8 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
mutex_lock(&inode->i_mutex);
ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos);
mutex_unlock(&inode->i_mutex);
if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) {
int err = sync_page_range(inode, mapping, pos, ret);
if (ret > 0) {
int err = generic_write_sync(file, pos, ret);
if (err < 0)
ret = err;
}
@ -2173,8 +2165,8 @@ static ssize_t ntfs_file_writev(struct file *file, const struct iovec *iov,
if (ret == -EIOCBQUEUED)
ret = wait_on_sync_kiocb(&kiocb);
mutex_unlock(&inode->i_mutex);
if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) {
int err = sync_page_range(inode, mapping, *ppos - ret, ret);
if (ret > 0) {
int err = generic_write_sync(file, *ppos - ret, ret);
if (err < 0)
ret = err;
}

13
fs/ntfs/mft.c
View file

@ -384,13 +384,12 @@ MFT_RECORD *map_extent_mft_record(ntfs_inode *base_ni, MFT_REF mref,
* it is dirty in the inode meta data rather than the data page cache of the
* inode, and thus there are no data pages that need writing out. Therefore, a
* full mark_inode_dirty() is overkill. A mark_inode_dirty_sync(), on the
* other hand, is not sufficient, because I_DIRTY_DATASYNC needs to be set to
* ensure ->write_inode is called from generic_osync_inode() and this needs to
* happen or the file data would not necessarily hit the device synchronously,
* even though the vfs inode has the O_SYNC flag set. Also, I_DIRTY_DATASYNC
* simply "feels" better than just I_DIRTY_SYNC, since the file data has not
* actually hit the block device yet, which is not what I_DIRTY_SYNC on its own
* would suggest.
* other hand, is not sufficient, because ->write_inode needs to be called even
* in case of fdatasync. This needs to happen or the file data would not
* necessarily hit the device synchronously, even though the vfs inode has the
* O_SYNC flag set. Also, I_DIRTY_DATASYNC simply "feels" better than just
* I_DIRTY_SYNC, since the file data has not actually hit the block device yet,
* which is not what I_DIRTY_SYNC on its own would suggest.
*/
void __mark_mft_record_dirty(ntfs_inode *ni)
{