diff mbox series

[v5,RESEND,5/5] dm-crypt: Fix lost ioprio when queuing write bios

Message ID 20231218012746.24442-6-hongyu.jin.cn@gmail.com (mailing list archive)
State Superseded, archived
Delegated to: Mike Snitzer
Headers show
Series Fix I/O priority lost in device-mapper | expand

Commit Message

Hongyu Jin Dec. 18, 2023, 1:27 a.m. UTC 
From: Hongyu Jin <hongyu.jin@unisoc.com>

The original submitting bio->bi_ioprio setting can be retained by
struct dm_crypt_io::base_bio, we set the original bio's ioprio to
the cloned bio for write.

Link: https://lore.kernel.org/dm-devel/alpine.LRH.2.11.1612141049250.13402@mail.ewheeler.net

Signed-off-by: Hongyu Jin <hongyu.jin@unisoc.com>
---
 drivers/md/dm-crypt.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Eric Biggers Dec. 19, 2023, 10:50 p.m. UTC | #1 
On Mon, Dec 18, 2023 at 09:27:46AM +0800, Hongyu Jin wrote:
> From: Hongyu Jin <hongyu.jin@unisoc.com>
> 
> The original submitting bio->bi_ioprio setting can be retained by
> struct dm_crypt_io::base_bio, we set the original bio's ioprio to
> the cloned bio for write.

This commit message does not make sense.  Can you make the commit message
properly describe the problem and how the patch fixes it?

- Eric
diff mbox series

Patch

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 6de107aff331..7149da6555b8 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1683,6 +1683,7 @@  static struct bio *crypt_alloc_buffer(struct dm_crypt_io *io, unsigned int size)
 				 GFP_NOIO, &cc->bs);
 	clone->bi_private = io;
 	clone->bi_end_io = crypt_endio;
+	clone->bi_ioprio = io->base_bio->bi_ioprio;
 
 	remaining_size = size;