Re: [PATCH 07/15] vfs: skip zero-length dedupe requests

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To: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Subject: Re: [PATCH 07/15] vfs: skip zero-length dedupe requests
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat, 6 Oct 2018 03:39:45 -0700
Cc: david@xxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, ocfs2-devel@xxxxxxxxxxxxxx, sandeen@xxxxxxxxxx
In-reply-to: <153870032167.29072.11158511021942868400.stgit@magnolia>
User-agent: Mutt/1.9.2 (2017-12-15)

On Thu, Oct 04, 2018 at 05:45:21PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Don't bother calling the filesystem for a zero-length dedupe request;
> we can return zero and exit.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

Looks fine,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

References:
- [PATCH 00/15] fs: fixes for serious clone/dedupe problems
  - From: Darrick J. Wong
- [PATCH 07/15] vfs: skip zero-length dedupe requests
  - From: Darrick J. Wong

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