ipc/sem: do not sleep with a spin lock held

[linux-2.6-block.git] / ipc / sem.c

diff --git a/ipc/sem.c b/ipc/sem.c
index 6693daf4fe1124b3a69a345c42f30cf9767a739b..0dbdb98fdf2d940c33400fb82e353c1d5896cfa9 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -1964,6 +1964,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
         */
        un = lookup_undo(ulp, semid);
        if (un) {
+               spin_unlock(&ulp->lock);
                kvfree(new);
                goto success;
        }
@@ -1976,9 +1977,8 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
        ipc_assert_locked_object(&sma->sem_perm);
        list_add(&new->list_id, &sma->list_id);
        un = new;
-
-success:
        spin_unlock(&ulp->lock);
+success:
        sem_unlock(sma, -1);
 out:
        return un;