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Re: [PATCH 3/6] xfs: add DAX file operations support

To: Boaz Harrosh <openosd@xxxxxxxxx>
Subject: Re: [PATCH 3/6] xfs: add DAX file operations support
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 5 Mar 2015 09:03:48 +1100
Cc: xfs@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, jack@xxxxxxx, willy@xxxxxxxxxxxxxxx
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References: <1425425427-16283-1-git-send-email-david@xxxxxxxxxxxxx> <1425425427-16283-4-git-send-email-david@xxxxxxxxxxxxx> <54F6D9E4.9050803@xxxxxxxxx> <20150304130100.GU18360@dastard> <54F71CBA.2@xxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Wed, Mar 04, 2015 at 04:54:50PM +0200, Boaz Harrosh wrote:
> On 03/04/2015 03:01 PM, Dave Chinner wrote:
> > On Wed, Mar 04, 2015 at 12:09:40PM +0200, Boaz Harrosh wrote:
> <>
> > 
> > So, we definitely need splice to/from DAX enabled inodes to be
> > rejected. I'll have a look at that...
> > 
> 
> default_file_splice_read uses kernel_readv which I think might actually
> work. Do you know what xfstest(s) exercise splice?

We have a rudimentary one only because I discovered a while back
none existed at all. i.e. splice is effectively untested by
xfstests. If you want to write some tests to execise it, that'd be
great....

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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