linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: introduce sysfs/data_io_flag to attach REQ

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

Message-ID: <0e627c29-7fb0-5bd6-c1d9-b96a94df62ae@huawei.com>
Date:   Tue, 7 Apr 2020 10:16:22 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>, <kernel-team@...roid.com>
Subject: Re: [f2fs-dev] [PATCH] f2fs: introduce sysfs/data_io_flag to attach
 REQ_META/FUA

On 2020/4/4 0:12, Jaegeuk Kim wrote:
> This patch introduces a way to attach REQ_META/FUA explicitly
> to all the data writes given temperature.
> 
> -> attach REQ_FUA to Hot Data writes
> 
> -> attach REQ_FUA to Hot|Warm Data writes
> 
> -> attach REQ_FUA to Hot|Warm|Cold Data writes
> 
> -> attach REQ_FUA to Hot|Warm|Cold Data writes as well as
>           REQ_META to Hot Data writes

Out of curiosity, what scenario it is used for?

Thanks,