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Date: Thu, 29 Sep 2016 22:18:34 +0200
From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>, xfs@oss.sgi.com,
        linux-fsdevel@vger.kernel.org, linux-aio@kvack.org
Subject: Re: aio completions vs file_accessed race, was: Re: [PATCH 7/8]
        xfs: split direct I/O and DAX path
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Can you try the patch below?  That just moves the file_accessed call
before the I/O, similar to how we handle timestamp updates on the write
side.  generic_file_read_iter will also need a similar update.