linux-kernel - Re: [PATCH 5/9] aio: simplify cancellation

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: <20180321091708.GM14085@kroah.com>
Date:   Wed, 21 Mar 2018 10:17:08 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     viro@...iv.linux.org.uk, 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: [PATCH 5/9] aio: simplify cancellation

On Wed, Mar 21, 2018 at 08:32:28AM +0100, Christoph Hellwig wrote:
> With the current aio code there is no need for the magic KIOCB_CANCELLED
> value, as a cancelation just kicks the driver to queue the completion
> ASAP, with all actual completion handling done in another thread. Given
> that both the completion path and cancelation take the context lock there
> is no need for magic cmpxchg loops either.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> Acked-by: Jeff Moyer <jmoyer@...hat.com>

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>