diff options
| -rw-r--r-- | fs/xfs/xfs_mount.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index f6fe47d8c4dc..39cf6f3267c3 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1182,6 +1182,17 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr) int64_t fsid; #endif + /* + * We can potentially deadlock here if we have an inode cluster + * that has been freed has it's buffer still pinned in memory because + * the transaction is still sitting in a iclog. The stale inodes + * on that buffer will have their flush locks held until the + * transaction hits the disk and the callbacks run. the inode + * flush takes the flush lock unconditionally and with nothing to + * push out the iclog we will never get that unlocked. hence we + * need to force the log first. + */ + xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC); xfs_iflush_all(mp); XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING); |