linux-kernel - Re: [PATCH v2 9/9] iomap: Change calling convention for zeroing

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Date:   Fri, 11 Sep 2020 07:42:54 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Christoph Hellwig <hch@...radead.org>,
        linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org,
        Dave Kleikamp <shaggy@...nel.org>,
        jfs-discussion@...ts.sourceforge.net
Subject: Re: [PATCH v2 9/9] iomap: Change calling convention for zeroing

On Fri, Sep 11, 2020 at 12:47:07AM +0100, Matthew Wilcox (Oracle) wrote:
> Pass the full length to iomap_zero() and dax_iomap_zero(), and have
> them return how many bytes they actually handled.  This is preparatory
> work for handling THP, although it looks like DAX could actually take
> advantage of it if there's a larger contiguous area.

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>