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authorBaolin Wang <baolin.wang@linux.alibaba.com>2020-08-28 10:52:57 +0800
committerJens Axboe <axboe@kernel.dk>2020-09-01 16:49:26 -0600
commitcdfcef9ee87745d9511ad8825e1d2b8b861884da (patch)
tree12f6e3cc09b1c987630ee4587aa7f5e30fb846fb /block/blk-mq-sched.c
parent7d7ca7c5269becab86c9f595309c8e90ce268967 (diff)
block: Remove blk_mq_attempt_merge() function
The small blk_mq_attempt_merge() function is only called by __blk_mq_sched_bio_merge(), just open code it. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-sched.c')
-rw-r--r--block/blk-mq-sched.c44
1 files changed, 16 insertions, 28 deletions
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 94db0c9d59b8..205d9716f7a5 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -391,28 +391,6 @@ bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
}
EXPORT_SYMBOL_GPL(blk_mq_sched_try_merge);
-/*
- * Reverse check our software queue for entries that we could potentially
- * merge with. Currently includes a hand-wavy stop count of 8, to not spend
- * too much time checking for merges.
- */
-static bool blk_mq_attempt_merge(struct request_queue *q,
- struct blk_mq_hw_ctx *hctx,
- struct blk_mq_ctx *ctx, struct bio *bio,
- unsigned int nr_segs)
-{
- enum hctx_type type = hctx->type;
-
- lockdep_assert_held(&ctx->lock);
-
- if (blk_bio_list_merge(q, &ctx->rq_lists[type], bio, nr_segs)) {
- ctx->rq_merged++;
- return true;
- }
-
- return false;
-}
-
bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
unsigned int nr_segs)
{
@@ -426,14 +404,24 @@ bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
return e->type->ops.bio_merge(hctx, bio, nr_segs);
type = hctx->type;
- if ((hctx->flags & BLK_MQ_F_SHOULD_MERGE) &&
- !list_empty_careful(&ctx->rq_lists[type])) {
- /* default per sw-queue merge */
- spin_lock(&ctx->lock);
- ret = blk_mq_attempt_merge(q, hctx, ctx, bio, nr_segs);
- spin_unlock(&ctx->lock);
+ if (!(hctx->flags & BLK_MQ_F_SHOULD_MERGE) ||
+ list_empty_careful(&ctx->rq_lists[type]))
+ return false;
+
+ /* default per sw-queue merge */
+ spin_lock(&ctx->lock);
+ /*
+ * Reverse check our software queue for entries that we could
+ * potentially merge with. Currently includes a hand-wavy stop
+ * count of 8, to not spend too much time checking for merges.
+ */
+ if (blk_bio_list_merge(q, &ctx->rq_lists[type], bio, nr_segs)) {
+ ctx->rq_merged++;
+ ret = true;
}
+ spin_unlock(&ctx->lock);
+
return ret;
}