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-rw-r--r--mm/hmm.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/mm/hmm.c b/mm/hmm.c
index 6f5dc6d568fe..2ef14b2b5505 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -276,17 +276,11 @@ EXPORT_SYMBOL(hmm_mirror_register);
*/
void hmm_mirror_unregister(struct hmm_mirror *mirror)
{
- struct hmm *hmm = READ_ONCE(mirror->hmm);
-
- if (hmm == NULL)
- return;
+ struct hmm *hmm = mirror->hmm;
down_write(&hmm->mirrors_sem);
list_del_init(&mirror->list);
- /* To protect us against double unregister ... */
- mirror->hmm = NULL;
up_write(&hmm->mirrors_sem);
-
hmm_put(hmm);
}
EXPORT_SYMBOL(hmm_mirror_unregister);