diff options
| author | Jan Kara <jack@suse.cz> | 2012-06-12 16:20:39 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-31 07:45:48 +0200 |
| commit | d9457dc056249913a7abe8b71dc09e427e590e35 (patch) | |
| tree | 8f0c6681d4c5802a6f5a124111b9d3958f0b281b /fs/xfs/xfs_file.c | |
| parent | ext4: Convert to new freezing mechanism (diff) | |
| download | linux-d9457dc056249913a7abe8b71dc09e427e590e35.tar.xz linux-d9457dc056249913a7abe8b71dc09e427e590e35.zip | |
xfs: Convert to new freezing code
Generic code now blocks all writers from standard write paths. So we add
blocking of all writers coming from ioctl (we get a protection of ioctl against
racing remount read-only as a bonus) and convert xfs_file_aio_write() to a
non-racy freeze protection. We also keep freeze protection on transaction
start to block internal filesystem writes such as removal of preallocated
blocks.
CC: Ben Myers <bpm@sgi.com>
CC: Alex Elder <elder@kernel.org>
CC: xfs@oss.sgi.com
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/xfs/xfs_file.c')
| -rw-r--r-- | fs/xfs/xfs_file.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 9f7ec15a6522..f0081f20e5c0 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -781,10 +781,12 @@ xfs_file_aio_write( if (ocount == 0) return 0; - xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); + sb_start_write(inode->i_sb); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { + ret = -EIO; + goto out; + } if (unlikely(file->f_flags & O_DIRECT)) ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, ocount); @@ -803,6 +805,8 @@ xfs_file_aio_write( ret = err; } +out: + sb_end_write(inode->i_sb); return ret; } |