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xfs: only bother with sync_filesystem during readonly remount 

In commit 02b9984d64, we pushed a sync_filesystem() call from the VFS
into xfs_fs_remount.  The only time that we ever need to push dirty file
data or metadata to disk for a remount is if we're remounting the
filesystem read only, so this really could be moved to xfs_remount_ro.

Once we've moved the call site, actually check the return value from
sync_filesystem.

Fixes: 02b9984d64 ("fs: push sync_filesystem() down to the file system's remount_fs()")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2022-02-03 08:29:21 -08:00
parent cea267c235
commit b97cca3ba9
1 changed files with 5 additions and 2 deletions
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7
fs/xfs/xfs_super.c
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@ -1749,6 +1749,11 @@ xfs_remount_ro(
};
int error;
/* Flush all the dirty data to disk. */
error = sync_filesystem(mp->m_super);
if (error)
return error;
/*
* Cancel background eofb scanning so it cannot race with the final
* log force+buftarg wait and deadlock the remount.
@ -1827,8 +1832,6 @@ xfs_fs_reconfigure(
if (error)
return error;
sync_filesystem(mp->m_super);
/* inode32 -> inode64 */
if (xfs_has_small_inums(mp) && !xfs_has_small_inums(new_mp)) {
mp->m_features &= ~XFS_FEAT_SMALL_INUMS;