[XFS] Tight loop in xfs_finish_reclaim_all prevented the xfslogd to run

its queue of IO completion callbacks, thus creating the deadlock between
umount and xfslogd. Breaking the loop solves the problem.

SGI-PV: 943821
SGI-Modid: xfs-linux-melb:xfs-kern:202363a

Signed-off-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 7c1f74531463..e03fa2a3d5ed 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -3958,8 +3958,9 @@ xfs_finish_reclaim_all(xfs_mount_t *mp, int noblock)
                                 }
                         }
                         XFS_MOUNT_IUNLOCK(mp);
-                        xfs_finish_reclaim(ip, noblock,
-                                XFS_IFLUSH_DELWRI_ELSE_ASYNC);
+                        if (xfs_finish_reclaim(ip, noblock,
+                                        XFS_IFLUSH_DELWRI_ELSE_ASYNC))
+                                delay(1);
                         purged = 1;
                         break;
                 }