From: Christoph Hellwig <hch@lst.de>
Date: Thu, 18 May 2023 05:31:00 +0000 (+0200)
Subject: blk-mq: remove RQF_ELVPRIV
X-Git-Tag: v6.6.7~2487^2~215
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fdcab6cddef24a26b86d798814b3c25057e53c21;p=platform%2Fkernel%2Flinux-starfive.git

blk-mq: remove RQF_ELVPRIV

RQF_ELVPRIV is set for all non-flush requests that have RQF_ELV set.
Expand this condition in the two users of the flag and remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230518053101.760632-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index f89865a..ae1b308 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -251,7 +251,6 @@ static const char *const rqf_name[] = {
 	RQF_NAME(DONTPREP),
 	RQF_NAME(FAILED),
 	RQF_NAME(QUIET),
-	RQF_NAME(ELVPRIV),
 	RQF_NAME(IO_STAT),
 	RQF_NAME(PM),
 	RQF_NAME(HASHED),
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index 7c3cbad..4d8d2cd 100644
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -58,11 +58,11 @@ static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
 
 static inline void blk_mq_sched_requeue_request(struct request *rq)
 {
-	if (rq->rq_flags & RQF_ELV) {
+	if ((rq->rq_flags & RQF_ELV) && !op_is_flush(rq->cmd_flags)) {
 		struct request_queue *q = rq->q;
 		struct elevator_queue *e = q->elevator;
 
-		if ((rq->rq_flags & RQF_ELVPRIV) && e->type->ops.requeue_request)
+		if (e->type->ops.requeue_request)
 			e->type->ops.requeue_request(rq);
 	}
 }
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 8b7e4da..7470c66 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -393,10 +393,8 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data,
 		RB_CLEAR_NODE(&rq->rb_node);
 
 		if (!op_is_flush(data->cmd_flags) &&
-		    e->type->ops.prepare_request) {
+		    e->type->ops.prepare_request)
 			e->type->ops.prepare_request(rq);
-			rq->rq_flags |= RQF_ELVPRIV;
-		}
 	}
 
 	return rq;
@@ -696,7 +694,7 @@ void blk_mq_free_request(struct request *rq)
 	struct request_queue *q = rq->q;
 	struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
 
-	if ((rq->rq_flags & RQF_ELVPRIV) &&
+	if ((rq->rq_flags & RQF_ELV) && !op_is_flush(rq->cmd_flags) &&
 	    q->elevator->type->ops.finish_request)
 		q->elevator->type->ops.finish_request(rq);
 
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 06caacd..5529e7d 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -42,8 +42,6 @@ typedef __u32 __bitwise req_flags_t;
 #define RQF_FAILED		((__force req_flags_t)(1 << 10))
 /* don't warn about errors */
 #define RQF_QUIET		((__force req_flags_t)(1 << 11))
-/* elevator private data attached */
-#define RQF_ELVPRIV		((__force req_flags_t)(1 << 12))
 /* account into disk and partition IO statistics */
 #define RQF_IO_STAT		((__force req_flags_t)(1 << 13))
 /* runtime pm request */