From: Jens Axboe <axboe@fb.com>
Date: Fri, 28 Apr 2017 14:53:01 +0000 (-0600)
Subject: blk-mq-sched: remove hack that bypasses scheduler for reserved requests
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9f2779bff2f178496fb00b89797734ee245d2c93;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

blk-mq-sched: remove hack that bypasses scheduler for reserved requests

We have update the troublesome driver (mtip32xx) to deal with this
appropriately. So kill the hack that bypassed scheduler allocation
and insertion for reserved requests.

Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 8b361e192e8a..e79e9f18d7c2 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -82,11 +82,7 @@ struct request *blk_mq_sched_get_request(struct request_queue *q,
 	if (likely(!data->hctx))
 		data->hctx = blk_mq_map_queue(q, data->ctx->cpu);
 
-	/*
-	 * For a reserved tag, allocate a normal request since we might
-	 * have driver dependencies on the value of the internal tag.
-	 */
-	if (e && !(data->flags & BLK_MQ_REQ_RESERVED)) {
+	if (e) {
 		data->flags |= BLK_MQ_REQ_INTERNAL;
 
 		/*