linux-kernel - Re: [PATCH v12 00/20] DAX: Page cache bypass for filesystems on memory storage

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Message-Id: <20150112150921.d9e8e46f9bb5d76d8cfb3fbc@linux-foundation.org>
Date:	Mon, 12 Jan 2015 15:09:21 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Matthew Wilcox <matthew.r.wilcox@...el.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, willy@...ux.intel.com
Subject: Re: [PATCH v12 00/20] DAX: Page cache bypass for filesystems on
 memory storage

On Fri, 24 Oct 2014 17:20:32 -0400 Matthew Wilcox <matthew.r.wilcox@...el.com> wrote:

> DAX is a replacement for the variation of XIP currently supported by
> the ext2 filesystem.

Looks pretty nice to me, thanks.  I had a bunch of relatively minor
review questions - mainly stuff which would benefit from some short
comments.

I had to do some mangling due to the intervening
i_mmap_mutex->i_mmap_lock_read/write.  I ended up choosing
i_mmap_lock_read() throughout, which needs careful checking please.  I
also converted the changelogs.  It still compiles!

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