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| author | Christoph Hellwig <hch@lst.de> | 2015-11-26 09:13:05 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-12-01 18:53:59 +0100 |
| commit | 6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8 (patch) | |
| tree | 78520f9313db6743cb1ba6feb805120e80113a8d /block/blk-mq.c | |
| parent | Revert "blk-flush: Queue through IO scheduler when flush not required" (diff) | |
| download | linux-6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8.tar.xz linux-6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8.zip | |
blk-mq: add a flags parameter to blk_mq_alloc_request
We already have the reserved flag, and a nowait flag awkwardly encoded as
a gfp_t. Add a real flags argument to make the scheme more extensible and
allow for a nicer calling convention.
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 | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 6d6f8feb48c0..93a4e1956915 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -229,8 +229,8 @@ __blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw) return NULL; } -struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp, - bool reserved) +struct request *blk_mq_alloc_request(struct request_queue *q, int rw, + unsigned int flags) { struct blk_mq_ctx *ctx; struct blk_mq_hw_ctx *hctx; @@ -238,24 +238,22 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp, struct blk_mq_alloc_data alloc_data; int ret; - ret = blk_queue_enter(q, gfp); + ret = blk_queue_enter(q, flags & BLK_MQ_REQ_NOWAIT); if (ret) return ERR_PTR(ret); ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); - blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_DIRECT_RECLAIM, - reserved, ctx, hctx); + blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); - if (!rq && (gfp & __GFP_DIRECT_RECLAIM)) { + if (!rq && !(flags & BLK_MQ_REQ_NOWAIT)) { __blk_mq_run_hw_queue(hctx); blk_mq_put_ctx(ctx); ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); - blk_mq_set_alloc_data(&alloc_data, q, gfp, reserved, ctx, - hctx); + blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); ctx = alloc_data.ctx; } @@ -1175,8 +1173,7 @@ static struct request *blk_mq_map_request(struct request_queue *q, rw |= REQ_SYNC; trace_block_getrq(q, bio, rw); - blk_mq_set_alloc_data(&alloc_data, q, GFP_ATOMIC, false, ctx, - hctx); + blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); if (unlikely(!rq)) { __blk_mq_run_hw_queue(hctx); @@ -1185,8 +1182,7 @@ static struct request *blk_mq_map_request(struct request_queue *q, ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); - blk_mq_set_alloc_data(&alloc_data, q, - __GFP_RECLAIM|__GFP_HIGH, false, ctx, hctx); + blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); ctx = alloc_data.ctx; hctx = alloc_data.hctx; |