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| author | Christoph Hellwig <hch@lst.de> | 2014-05-27 20:59:49 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-05-28 09:49:25 -0600 |
| commit | 793597a6a95675f4f85671cf747c1d92e7dbc295 (patch) | |
| tree | 03512fdd3c26e9a7b24890beb84a99b2bc7cd77d /block/blk-mq.c | |
| parent | a3bd77567cae6af700dcd245148befc73fc89a50 (diff) | |
| download | op-kernel-dev-793597a6a95675f4f85671cf747c1d92e7dbc295.zip op-kernel-dev-793597a6a95675f4f85671cf747c1d92e7dbc295.tar.gz | |
blk-mq: do not use blk_mq_alloc_request_pinned in blk_mq_map_request
We already do a non-blocking allocation in blk_mq_map_request, no need
to repeat it. Just call __blk_mq_alloc_request to wait directly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 3224888..43f0c8f 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1179,12 +1179,14 @@ static struct request *blk_mq_map_request(struct request_queue *q, trace_block_getrq(q, bio, rw); rq = __blk_mq_alloc_request(q, hctx, ctx, rw, GFP_ATOMIC, false); if (unlikely(!rq)) { + __blk_mq_run_hw_queue(hctx); blk_mq_put_ctx(ctx); trace_block_sleeprq(q, bio, rw); - rq = blk_mq_alloc_request_pinned(q, rw, __GFP_WAIT|GFP_ATOMIC, - false); - ctx = rq->mq_ctx; + + ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); + rq = __blk_mq_alloc_request(q, hctx, ctx, rw, + __GFP_WAIT|GFP_ATOMIC, false); } hctx->queued++; |
