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

[Andrew Morton]

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