From 1c6a9dc0a42929b30853b04e850268def6d8e0cf Mon Sep 17 00:00:00 2001 From: huanghua Date: Sat, 6 Dec 2008 00:53:11 +0000 Subject: [PATCH] Branch HEAD b=17589 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 3c0c61b..6b99d14 100644 --- a/lustre/llite/llite_lib.c +++ b/lustre/llite/llite_lib.c @@ -1958,9 +1958,19 @@ 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; } -- 1.8.3.1