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authorChristoph Hellwig <hch@lst.de>2018-11-14 19:02:07 +0300
committerJens Axboe <axboe@kernel.dk>2018-11-15 22:13:19 +0300
commit57d74df90783f6a6b3e79dfdd2a567ce5db3b790 (patch)
tree8ad00d0426916e945f3c7dec608d786972596260 /block/blk-mq.c
parent39795d6534c6e698c4f9c065e0a5f4a2e5af7543 (diff)
downloadlinux-57d74df90783f6a6b3e79dfdd2a567ce5db3b790.tar.xz
block: use atomic bitops for ->queue_flags
->queue_flags is generally not set or cleared in the fast path, and also generally set or cleared one flag at a time. Make use of the normal atomic bitops for it so that we don't need to take the queue_lock, which is otherwise mostly unused in the core block layer now. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
-rw-r--r--block/blk-mq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4c82b4b4fa3e..e2717e843727 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2756,7 +2756,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT;
if (!(set->flags & BLK_MQ_F_SG_MERGE))
- queue_flag_set_unlocked(QUEUE_FLAG_NO_SG_MERGE, q);
+ blk_queue_flag_set(QUEUE_FLAG_NO_SG_MERGE, q);
q->sg_reserved_size = INT_MAX;