netdev - Re: [PATCH 30/32] aio: add delayed cancel support

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Message-ID: <x49y3l52uda.fsf@segfault.boston.devel.redhat.com>
Date:   Wed, 10 Jan 2018 17:59:13 -0500
From:   Jeff Moyer <jmoyer@...hat.com>
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,
        netdev@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 30/32] aio: add delayed cancel support

Christoph Hellwig <hch@....de> writes:

> The upcoming aio poll support would like to be able to complete the
> iocb inline from the cancellation context, but that would cause
> a lock order reversal.  Add support for optionally moving the cancelation
> outside the context lock to avoid this reversal.
>
> Signed-off-by: Christoph Hellwig <hch@....de>

Acked-by: Jeff Moyer <jmoyer@...hat.com>