linux-kernel - Re: [PATCH 1/3] blk-mq: allow hardware queue to get more tag while sharing a tag set

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Tue, 29 Dec 2020 10:37:27 +0800
From:   "yukuai (C)" <yukuai3@...wei.com>
To:     Ming Lei <ming.lei@...hat.com>
CC:     <axboe@...nel.dk>, <linux-block@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <yi.zhang@...wei.com>,
        <zhangxiaoxu5@...wei.com>
Subject: Re: [PATCH 1/3] blk-mq: allow hardware queue to get more tag while
 sharing a tag set

Hi

On 2020/12/29 9:15, Ming Lei wrote:
> Just wondering why you try to set 128 via sysfs for all disks? If you do that,
> you should know the potential result given the whole tags queue depth is just
> 128.

It's just a extreme example to show the unexpected result of "always
return true from hctx_may_queue()".

Thanks,
Yu Kuai