linux-kernel - Re: [RFC NO MERGE] f2fs: extent cache: support unaligned extent

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: <3256dc39-2a82-cb60-038b-69e262c32d18@kernel.org>
Date:   Tue, 3 Aug 2021 09:07:22 +0800
From:   Chao Yu <chao@...nel.org>
To:     Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <chao.yu@...ux.dev>
Subject: Re: [RFC NO MERGE] f2fs: extent cache: support unaligned extent

On 2021/8/3 2:03, Jaegeuk Kim wrote:
> On 08/01, Chao Yu wrote:
>> On 2021/7/31 3:20, Jaegeuk Kim wrote:
>>> On 07/07, Chao Yu wrote:
>>>> Currently, it only works in readonly format f2fs image.
>>
>> There wouldn't be any race condition because unaligned extent only works
>> for ro feature now?
> 
> Isn't your patch proposing on writable partition?

Please check description in patch message, now it was designed only for
compression case w/ ro feature, let's check and support rw partition later.

Thanks,

> 
>>
>>> Is there any race condition between the address in extent_cache and the one in
>>> dnode? I feel that we could synchronize it by locking its dnode block.
>>
>> Thanks,