This is a note to let you know that I've just added the patch titled
block: bfq: fix bfq_set_next_ioprio_data()
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
block-bfq-fix-bfq_set_next_ioprio_data.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a680dd72ec336b81511e3bff48efac6dbfa563e7 Mon Sep 17 00:00:00 2001
From: Damien Le Moal <damien.lemoal@xxxxxxx>
Date: Wed, 11 Aug 2021 12:36:57 +0900
Subject: block: bfq: fix bfq_set_next_ioprio_data()
From: Damien Le Moal <damien.lemoal@xxxxxxx>
commit a680dd72ec336b81511e3bff48efac6dbfa563e7 upstream.
For a request that has a priority level equal to or larger than
IOPRIO_BE_NR, bfq_set_next_ioprio_data() prints a critical warning but
defaults to setting the request new_ioprio field to IOPRIO_BE_NR. This
is not consistent with the warning and the allowed values for priority
levels. Fix this by setting the request new_ioprio field to
IOPRIO_BE_NR - 1, the lowest priority level allowed.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: aee69d78dec0 ("block, bfq: introduce the BFQ-v0 I/O scheduler as an extra scheduler")
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Link: https://lore.kernel.org/r/20210811033702.368488-2-damien.lemoal@xxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
block/bfq-iosched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -5296,7 +5296,7 @@ bfq_set_next_ioprio_data(struct bfq_queu
if (bfqq->new_ioprio >= IOPRIO_BE_NR) {
pr_crit("bfq_set_next_ioprio_data: new_ioprio %d\n",
bfqq->new_ioprio);
- bfqq->new_ioprio = IOPRIO_BE_NR;
+ bfqq->new_ioprio = IOPRIO_BE_NR - 1;
}
bfqq->entity.new_weight = bfq_ioprio_to_weight(bfqq->new_ioprio);
Patches currently in stable-queue which might be from damien.lemoal@xxxxxxx are
queue-5.14/block-bfq-fix-bfq_set_next_ioprio_data.patch
queue-5.14/blk-zoned-allow-blkreportzone-without-cap_sys_admin.patch
queue-5.14/blk-zoned-allow-zone-management-send-operations-without-cap_sys_admin.patch
