From f73e24f8830899175f3eb776f638e19d3aa7c334 Mon Sep 17 00:00:00 2001
From: huanghua <huanghua>
Date: Sat, 6 Dec 2008 01:01:01 +0000
Subject: [PATCH] Branch b1_6
i=tappro
i=yury.umanets
i=adilger
wait a bit before client umount if vfsmnt still has references.
---
lustre/llite/llite_lib.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/lustre/llite/llite_lib.c b/lustre/llite/llite_lib.c
index 2cf609800b..e6667dfa42 100644
--- a/lustre/llite/llite_lib.c
+++ b/lustre/llite/llite_lib.c
@@ -2012,9 +2012,19 @@ void ll_umount_begin(struct super_block *sb)
/* Really, we'd like to wait until there are no requests outstanding,
* and then continue. For now, we just invalidate the requests,
- * schedule, and hope.
+ * schedule() and sleep one second if needed, and hope.
*/
schedule();
+#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
+ if (atomic_read(&vfsmnt->mnt_count) > 2) {
+ cfs_schedule_timeout(CFS_TASK_INTERRUPTIBLE,
+ cfs_time_seconds(1));
+ if (atomic_read(&vfsmnt->mnt_count) > 2)
+ LCONSOLE_WARN("Mount still busy with %d refs! You "
+ "may try to umount it a bit later\n",
+ atomic_read(&vfsmnt->mnt_count));
+ }
+#endif
EXIT;
}
--
GitLab