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>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c
index 1e9ee064dbb2..0b9feacdcd1f 100644
--- a/fs/xfs/xfs_sync.c
+++ b/fs/xfs/xfs_sync.c
@@ -394,7 +394,7 @@ xfs_sync_worker(
         if (!(mp->m_super->s_flags & MS_ACTIVE) &&
             !(mp->m_flags & XFS_MOUNT_RDONLY)) {
                 /* dgc: errors ignored here */
-                if (mp->m_super->s_frozen == SB_UNFROZEN &&
+                if (mp->m_super->s_writers.frozen == SB_UNFROZEN &&
                     xfs_log_need_covered(mp))
                         error = xfs_fs_log_dummy(mp);
                 else