linux-kernel - Re: [PATCH 07/12] iomap: zero newly allocated mapped blocks

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Message-ID: <20191015213241.GA16973@dread.disaster.area>
Date:   Wed, 16 Oct 2019 08:32:41 +1100
From:   Dave Chinner <david@...morbit.com>
To:     Christoph Hellwig <hch@....de>
Cc:     "Darrick J . Wong" <darrick.wong@...cle.com>,
        Damien Le Moal <Damien.LeMoal@....com>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/12] iomap: zero newly allocated mapped blocks

On Tue, Oct 15, 2019 at 05:43:40PM +0200, Christoph Hellwig wrote:
> File systems like gfs2 don't support delayed allocations or unwritten
> extents and thus allocate normal mapped blocks to fill holes.  To
> cover the case of such file systems allocating new blocks to fill holes
> also zero out mapped blocks with the new flag.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> Reviewed-by: Darrick J. Wong <darrick.wong@...cle.com>

Sensible.

Reviewed-by: Dave Chinner <dchinner@...hat.com>


-- 
Dave Chinner
david@...morbit.com