From 6ba71587ac2ca5e9800ae5a6244d490b93227bc8 Mon Sep 17 00:00:00 2001
From: huanghua <huanghua>
Date: Wed, 3 Dec 2008 02:23:23 +0000
Subject: [PATCH] Branch HEAD b=17589 i=yong.fan i=yury.umanets
wait a bit while umount client if there is still ref count on mnt.
---
lustre/llite/llite_lib.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/lustre/llite/llite_lib.c b/lustre/llite/llite_lib.c
index a2a6c3e31a..2ed0051d59 100644
--- a/lustre/llite/llite_lib.c
+++ b/lustre/llite/llite_lib.c
@@ -1958,9 +1958,16 @@ 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.
+ * sleep 1 second, and hope it is OK.
*/
- schedule();
+ 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));
+ }
EXIT;
}
--
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