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-rw-r--r--fs/namespace.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 0505fb61aa74..f48f98110c30 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1061,10 +1061,11 @@ static int do_umount(struct vfsmount *mnt, int flags)
* about for the moment.
*/
- lock_kernel();
- if (sb->s_op->umount_begin)
- sb->s_op->umount_begin(mnt, flags);
- unlock_kernel();
+ if (flags & MNT_FORCE && sb->s_op->umount_begin) {
+ lock_kernel();
+ sb->s_op->umount_begin(sb);
+ unlock_kernel();
+ }
/*
* No sense to grab the lock for this test, but test itself looks