From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, Christoph Hellwig , Bart Van Assche , Tejun Heo Subject: [PATCH] blk-mq: Add locking annotations to hctx_lock() and hctx_unlock() Date: Wed, 10 Jan 2018 11:34:27 -0800 Message-Id: <20180110193427.6601-1-bart.vanassche@wdc.com> List-ID: This patch avoids that sparse reports the following: block/blk-mq.c:637:33: warning: context imbalance in 'hctx_unlock' - unexpected unlock block/blk-mq.c:642:9: warning: context imbalance in 'hctx_lock' - wrong count at exit Signed-off-by: Bart Van Assche Cc: Tejun Heo --- block/blk-mq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index 8139d88e78f6..1d705e25852e 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -630,6 +630,7 @@ static void __blk_mq_complete_request(struct request *rq) } static void hctx_unlock(struct blk_mq_hw_ctx *hctx, int srcu_idx) + __releases(hctx->srcu) { if (!(hctx->flags & BLK_MQ_F_BLOCKING)) rcu_read_unlock(); @@ -638,6 +639,7 @@ static void hctx_unlock(struct blk_mq_hw_ctx *hctx, int srcu_idx) } static void hctx_lock(struct blk_mq_hw_ctx *hctx, int *srcu_idx) + __acquires(hctx->srcu) { if (!(hctx->flags & BLK_MQ_F_BLOCKING)) { /* shut up gcc false positive */ -- 2.15.1