Thread (30 messages) 30 messages, 2 authors, 2019-09-11
STALE2474d
Revisions (4)
  1. v6 [diff vs current]
  2. v7 [diff vs current]
  3. v8 current
  4. v9 [diff vs current]

[PATCH v8 12/13] block: call blk_account_io_start() in blk_execute_rq_nowait()

From: Logan Gunthorpe <logang@deltatee.com>
Date: 2019-08-28 21:55:11
Also in: linux-fsdevel, lkml
Subsystem: block layer, the rest · Maintainers: Jens Axboe, Linus Torvalds

All existing users of blk_execute_rq[_nowait]() are for passthrough
commands and will thus be rejected by blk_do_io_stat().

This allows passthrough requests to opt-in to IO accounting by setting
RQF_IO_STAT.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
 block/blk-exec.c | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/block/blk-exec.c b/block/blk-exec.c
index 1db44ca0f4a6..e20a852ae432 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -55,6 +55,8 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
 	rq->rq_disk = bd_disk;
 	rq->end_io = done;
 
+	blk_account_io_start(rq, true);
+
 	/*
 	 * don't check dying flag for MQ because the request won't
 	 * be reused after dying flag is set
-- 
2.20.1
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