linux-kernel - Re: [PATCH 6/8] nfs: don't dirty ITER_BVEC pages read through direct I/O

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Message-ID: <20141215061734.GU22149@ZenIV.linux.org.uk>
Date:	Mon, 15 Dec 2014 06:17:34 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Omar Sandoval <osandov@...ndov.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	Christoph Hellwig <hch@...radead.org>,
	David Sterba <dsterba@...e.cz>, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org, linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] nfs: don't dirty ITER_BVEC pages read through direct
 I/O

On Sun, Dec 14, 2014 at 09:27:00PM -0800, Omar Sandoval wrote:
> As with the generic blockdev code, kernel pages shouldn't be dirtied by
> the direct I/O path.

This really asks for an inlined helper (iter_is_bvec(iter) or something like
that)
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