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From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 5 Feb 2015 11:54:08 -0500
Message-ID: <CAMM=eLdQLTzzR3Kct1GkPAwEMnSEFCwrfmDUfwZioAvz33K1dw@mail.gmail.com>
Subject: Re: [PATCH 05/11] direct-io: only inc/dec inode->i_dio_count for file systems
To: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>
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On Thu, Oct 24, 2013 at 5:49 AM, Jens Axboe <axboe@kernel.dk> wrote:
> On Thu, Oct 24 2013, Christoph Hellwig wrote:
>> On Thu, Oct 24, 2013 at 10:46:00AM +0100, Jens Axboe wrote:
>> > On Thu, Oct 24 2013, Jens Axboe wrote:
>> > > We don't need truncate protection for block devices, so add a flag
>> > > bypassing this cache line dirtying twice for every IO. This easily
>> > > contributes to 5-10% of the CPU time on high IOPS O_DIRECT testing.
>> >
>> > There's a merge error in this patch, please find the correct one below.
>>
>> Btw, I think this patch should not go in with this series but rather via
>> the VFS tree as it's not related to the blk-mq infrastructure at all.
>
> That'd be fine with me, if Al could pick it up if he agrees with it.
> Feel free to add an acked/review-by :-)

This patch never got picked up.  Can it be?
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