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authorAlexander Gordeev <agordeev@redhat.com>2014-06-17 22:12:35 -0700
committerJens Axboe <axboe@fb.com>2014-06-17 22:12:35 -0700
commit8537b12034cf1fd3fab3da2c859d71f76846fae9 (patch)
treeeef471e49e99b4e78d180f1158258ef1d5eb0aca /include
parent736ed4de766d4f0e8e6142dd4f9d73ef61835ed9 (diff)
downloadlinux-8537b12034cf1fd3fab3da2c859d71f76846fae9.tar.gz
blk-mq: bitmap tag: fix races on shared ::wake_index fields
Fix racy updates of shared blk_mq_bitmap_tags::wake_index and blk_mq_hw_ctx::wake_index fields. Cc: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/blk-mq.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index a002cf191427..eb726b9c5762 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -42,7 +42,7 @@ struct blk_mq_hw_ctx {
unsigned int nr_ctx;
struct blk_mq_ctx **ctxs;
- unsigned int wait_index;
+ atomic_t wait_index;
struct blk_mq_tags *tags;