[PATCH 10/16] blk-mq: factor out a blk_mq_get_budget_and_tag helper

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Factor out a helper from __blk_mq_try_issue_directly in preparation
of folding that function into its two callers.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 block/blk-mq.c | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index a4fc6e68c3a66b..2995863c1680eb 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2625,13 +2625,27 @@ static blk_status_t __blk_mq_issue_directly(struct blk_mq_hw_ctx *hctx,
 	return ret;
 }
 
+static bool blk_mq_get_budget_and_tag(struct request *rq)
+{
+	int budget_token;
+
+	budget_token = blk_mq_get_dispatch_budget(rq->q);
+	if (budget_token < 0)
+		return false;
+	blk_mq_set_rq_budget_token(rq, budget_token);
+	if (!blk_mq_get_driver_tag(rq)) {
+		blk_mq_put_dispatch_budget(rq->q, budget_token);
+		return false;
+	}
+	return true;
+}
+
 static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
 						struct request *rq,
 						bool bypass_insert, bool last)
 {
 	struct request_queue *q = rq->q;
 	bool run_queue = true;
-	int budget_token;
 
 	/*
 	 * RCU or SRCU read lock is needed before checking quiesced flag.
@@ -2649,16 +2663,8 @@ static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
 	if ((rq->rq_flags & RQF_ELV) && !bypass_insert)
 		goto insert;
 
-	budget_token = blk_mq_get_dispatch_budget(q);
-	if (budget_token < 0)
-		goto insert;
-
-	blk_mq_set_rq_budget_token(rq, budget_token);
-
-	if (!blk_mq_get_driver_tag(rq)) {
-		blk_mq_put_dispatch_budget(q, budget_token);
+	if (!blk_mq_get_budget_and_tag(rq))
 		goto insert;
-	}
 
 	return __blk_mq_issue_directly(hctx, rq, last);
 insert:
-- 
2.39.2




[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux