linux-kernel - Re: io_pgetevents & aio fsync

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: <20180322163655.GA26261@ZenIV.linux.org.uk>
Date:   Thu, 22 Mar 2018 16:36:55 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Christoph Hellwig <hch@....de>
Cc:     Avi Kivity <avi@...lladb.com>, linux-aio@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: io_pgetevents & aio fsync

On Thu, Mar 22, 2018 at 04:36:05PM +0000, Al Viro wrote:
> On Wed, Mar 21, 2018 at 08:32:23AM +0100, Christoph Hellwig wrote:
> > Hi all,
> > 
> > this patch adds workqueue based fsync offload.  Version of this
> > patch have been floating around for a couple years, but we now
> > have a user with seastar used by ScyllaDB (who sponsored this
> > work) that really wants this in addition to the aio poll support.
> > More details are in the patch itself.
> > 
> > Because the iocb types have been defined sine day one (and probably
> > were supported by RHEL3) libaio already supports these calls as-is.
> > 
> > This also pulls in the aio cleanups and io_pgetevents support previously
> > submitted and review as part of the aio poll series.  The aio poll
> > series will be resubmitted on top of this series
> 
> Everything other than 6/9 looks sane; 6/9 belongs in aio poll series
> and AFAICS its user in there is actually broken.

Gyah... 7/9, that is.