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authorDavid Chinner <dgc@sgi.com>2008-04-10 12:19:02 +1000
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-04-18 11:51:04 +1000
commit6b1d1a732f886936fe515d911b1a01d9cc50e179 (patch)
treeecfbef2372320ebf527dc7a70100d8d208d4e078 /fs/xfs
parent4679b2d36d53ed508c956337972fbbea8db99a77 (diff)
[XFS] Fix lock inversion in forced shutdown.
Recent changes to xlog_state_release_iclog() placed the grant_lock inside the icloglock. forced unmount of the log does this the opposite way around, but does not depend on the order for correct working. Fix the inversion by changing the order locks are gained in xfs_log_force_umount(). SGI-PV: 979661 SGI-Modid: xfs-linux-melb:xfs-kern:30773a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_log.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 319b98eb410..4a6f7c5d145 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -3499,8 +3499,8 @@ xfs_log_force_umount(
* before we mark the filesystem SHUTDOWN and wake
* everybody up to tell the bad news.
*/
- spin_lock(&log->l_grant_lock);
spin_lock(&log->l_icloglock);
+ spin_lock(&log->l_grant_lock);
mp->m_flags |= XFS_MOUNT_FS_SHUTDOWN;
XFS_BUF_DONE(mp->m_sb_bp);
/*