kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

xfs: toggle readonly state around xfs_log_mount_finish

Browse source 
When we do log recovery on a readonly mount, unlinked inode
processing does not happen due to the readonly checks in
xfs_inactive(), which are trying to prevent any I/O on a
readonly mount.

This is misguided - we do I/O on readonly mounts all the time,
for consistency; for example, log recovery.  So do the same
RDONLY flag twiddling around xfs_log_mount_finish() as we
do around xfs_log_mount(), for the same reason.

This all cries out for a big rework but for now this is a
simple fix to an obvious problem.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Eric Sandeen 2017-08-08 18:21:49 -07:00 committed by Darrick J. Wong
parent 757a69ef6c
commit 6f4a1eefdd
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
fs/xfs/xfs_log.c
View file

@ -743,10 +743,14 @@ xfs_log_mount_finish(
struct xfs_mount *mp)
{
int error = 0;
bool readonly = (mp->m_flags & XFS_MOUNT_RDONLY);
if (mp->m_flags & XFS_MOUNT_NORECOVERY) {
ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
return 0;
} else if (readonly) {
/* Allow unlinked processing to proceed */
mp->m_flags &= ~XFS_MOUNT_RDONLY;
}
/*
@ -764,6 +768,9 @@ xfs_log_mount_finish(
xfs_log_work_queue(mp);
mp->m_super->s_flags &= ~MS_ACTIVE;
if (readonly)
mp->m_flags |= XFS_MOUNT_RDONLY;
return error;
}