summaryrefslogtreecommitdiff
path: root/lib/sbitmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/sbitmap.c')
-rw-r--r--lib/sbitmap.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 54f57cd117c6..969e5400a615 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -26,9 +26,7 @@ static inline bool sbitmap_deferred_clear(struct sbitmap *sb, int index)
/*
* First get a stable cleared mask, setting the old mask to 0.
*/
- do {
- mask = sb->map[index].cleared;
- } while (cmpxchg(&sb->map[index].cleared, mask, 0) != mask);
+ mask = xchg(&sb->map[index].cleared, 0);
/*
* Now clear the masked bits in our free word
@@ -516,10 +514,8 @@ static struct sbq_wait_state *sbq_wake_ptr(struct sbitmap_queue *sbq)
struct sbq_wait_state *ws = &sbq->ws[wake_index];
if (waitqueue_active(&ws->wait)) {
- int o = atomic_read(&sbq->wake_index);
-
- if (wake_index != o)
- atomic_cmpxchg(&sbq->wake_index, o, wake_index);
+ if (wake_index != atomic_read(&sbq->wake_index))
+ atomic_set(&sbq->wake_index, wake_index);
return ws;
}