blk-mq: add REQ_SYNC early

Add REQ_SYNC early, so rq_dispatched[] in blk_mq_rq_ctx_init
is set correctly.

Signed-off-by: Shaohua Li<shli@fusionio.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3c28048..b1bcc61 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -860,6 +860,8 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio)
        ctx = blk_mq_get_ctx(q);
        hctx = q->mq_ops->map_queue(q, ctx->cpu);
 
+       if (is_sync)
+               rw |= REQ_SYNC;
        trace_block_getrq(q, bio, rw);
        rq = __blk_mq_alloc_request(hctx, GFP_ATOMIC, false);
        if (likely(rq))