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-rw-r--r--fs/direct-io.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 1782023bd68a..0e04142d5962 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -544,6 +544,7 @@ static inline int dio_bio_reap(struct dio *dio, struct dio_submit *sdio)
*/
static int sb_init_dio_done_wq(struct super_block *sb)
{
+ struct workqueue_struct *old;
struct workqueue_struct *wq = alloc_workqueue("dio/%s",
WQ_MEM_RECLAIM, 0,
sb->s_id);
@@ -552,9 +553,9 @@ static int sb_init_dio_done_wq(struct super_block *sb)
/*
* This has to be atomic as more DIOs can race to create the workqueue
*/
- cmpxchg(&sb->s_dio_done_wq, NULL, wq);
+ old = cmpxchg(&sb->s_dio_done_wq, NULL, wq);
/* Someone created workqueue before us? Free ours... */
- if (wq != sb->s_dio_done_wq)
+ if (old)
destroy_workqueue(wq);
return 0;
}