From: Damien Le Moal <damien.lemoal@wdc.com>
To: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org,
Paolo Valente <paolo.valente@linaro.org>,
linux-f2fs-devel@lists.sourceforge.net,
Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>
Subject: [f2fs-dev] [PATCH v4 1/6] block: bfq: fix bfq_set_next_ioprio_data()
Date: Wed, 11 Aug 2021 12:36:57 +0900 [thread overview]
Message-ID: <20210811033702.368488-2-damien.lemoal@wdc.com> (raw)
In-Reply-To: <20210811033702.368488-1-damien.lemoal@wdc.com>
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@vger.kernel.org>
Fixes: aee69d78dec0 ("block, bfq: introduce the BFQ-v0 I/O scheduler as an extra scheduler")
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
block/bfq-iosched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index e4a61eda2d0f..e546a5f4bff9 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -5296,7 +5296,7 @@ bfq_set_next_ioprio_data(struct bfq_queue *bfqq, struct bfq_io_cq *bic)
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);
--
2.31.1
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
next prev parent reply other threads:[~2021-08-11 3:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-11 3:36 [f2fs-dev] [PATCH v4 0/6] IO priority fixes and improvements Damien Le Moal
2021-08-11 3:36 ` Damien Le Moal [this message]
2021-08-11 3:36 ` [f2fs-dev] [PATCH v4 2/6] block: improve ioprio class description comment Damien Le Moal
2021-08-11 3:36 ` [f2fs-dev] [PATCH v4 3/6] block: change ioprio_valid() to an inline function Damien Le Moal
2021-08-11 7:56 ` Johannes Thumshirn
2021-08-11 8:51 ` Damien Le Moal
2021-08-11 9:14 ` Johannes Thumshirn
2021-08-11 3:37 ` [f2fs-dev] [PATCH v4 4/6] block: fix IOPRIO_PRIO_CLASS() and IOPRIO_PRIO_VALUE() macros Damien Le Moal
2021-08-11 3:37 ` [f2fs-dev] [PATCH v4 5/6] block: Introduce IOPRIO_NR_LEVELS Damien Le Moal
2021-08-11 3:37 ` [f2fs-dev] [PATCH v4 6/6] block: fix default IO priority handling Damien Le Moal
2021-08-18 9:53 ` [f2fs-dev] [PATCH v4 0/6] IO priority fixes and improvements Damien Le Moal
2021-08-18 13:24 ` Jens Axboe
2021-08-18 21:52 ` Damien Le Moal
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210811033702.368488-2-damien.lemoal@wdc.com \
--to=damien.lemoal@wdc.com \
--cc=axboe@kernel.dk \
--cc=jaegeuk@kernel.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-f2fs-devel@lists.sourceforge.net \
--cc=paolo.valente@linaro.org \
--cc=yuchao0@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).