Messages in this thread Patch in this message | | | From | Christoph Hellwig <> | Subject | [PATCH 2/4] blk-mq: initialize request on allocation | Date | Mon, 31 Mar 2014 16:46:13 +0200 |
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If we want to share tag and request allocation between queues we cannot initialize the request at init/free time, but need to initialize it at allocation time as it might get used for different queues over its lifetime.
Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/blk-mq.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c index 871acd6..ec0c276 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -82,6 +82,7 @@ static struct request *__blk_mq_alloc_request(struct blk_mq_hw_ctx *hctx, tag = blk_mq_get_tag(hctx->tags, gfp, reserved); if (tag != BLK_MQ_TAG_FAIL) { rq = hctx->rqs[tag]; + blk_rq_init(hctx->queue, rq); rq->tag = tag; return rq; @@ -254,9 +255,7 @@ static void __blk_mq_free_request(struct blk_mq_hw_ctx *hctx, const int tag = rq->tag; struct request_queue *q = rq->q; - blk_rq_init(hctx->queue, rq); blk_mq_put_tag(hctx->tags, tag); - blk_mq_queue_exit(q); } @@ -1128,7 +1127,6 @@ static int blk_mq_init_rq_map(struct blk_mq_hw_ctx *hctx, left -= to_do * rq_size; for (j = 0; j < to_do; j++) { hctx->rqs[i] = p; - blk_rq_init(hctx->queue, hctx->rqs[i]); p += rq_size; i++; } -- 1.7.10.4
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