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authorChristoph Hellwig <hch@lst.de>2016-09-22 11:38:23 -0700
committerJens Axboe <axboe@fb.com>2016-09-22 14:27:39 -0600
commit63581af3f31e0dbea112b83f77c4fbb6a10e1406 (patch)
treeca9d5f19448c800daffee3183e197ff361a2c495
parent841bac2c87fc21c3ecf3bc3354855921735aeec1 (diff)
downloadlinux-63581af3f31e0dbea112b83f77c4fbb6a10e1406.tar.bz2
blk-mq: remove non-blocking pass in blk_mq_map_request
bt_get already does a non-blocking pass as well as running the queue when scheduling internally, no need to duplicate it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--block/blk-mq.c14
1 files changed, 1 insertions, 13 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index c29700010b5c..80d483864247 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1210,20 +1210,8 @@ static struct request *blk_mq_map_request(struct request_queue *q,
op_flags |= REQ_SYNC;
trace_block_getrq(q, bio, op);
- blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx);
+ blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
- if (unlikely(!rq)) {
- blk_mq_run_hw_queue(hctx, false);
- blk_mq_put_ctx(ctx);
- trace_block_sleeprq(q, bio, op);
-
- ctx = blk_mq_get_ctx(q);
- hctx = q->mq_ops->map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
- ctx = alloc_data.ctx;
- hctx = alloc_data.hctx;
- }
hctx->queued++;
data->hctx = hctx;