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-rw-r--r--fs/pnode.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/pnode.c b/fs/pnode.c
index 81f7599bdac4..6f7d02f3fa98 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -111,7 +111,8 @@ void change_mnt_propagation(struct mount *mnt, int type)
return;
}
if (IS_MNT_SHARED(mnt)) {
- m = propagation_source(mnt);
+ if (type == MS_SLAVE || !hlist_empty(&mnt->mnt_slave_list))
+ m = propagation_source(mnt);
if (list_empty(&mnt->mnt_share)) {
mnt_release_group_id(mnt);
} else {
@@ -637,10 +638,11 @@ void propagate_umount(struct list_head *set)
}
// now to_umount consists of all acceptable candidates
- // deal with reparenting of remaining overmounts on those
+ // deal with reparenting of surviving overmounts on those
list_for_each_entry(m, &to_umount, mnt_list) {
- if (m->overmount)
- reparent(m->overmount);
+ struct mount *over = m->overmount;
+ if (over && !will_be_unmounted(over))
+ reparent(over);
}
// and fold them into the set