linux-kernel - Re: [RFC 05/23] filemap: align index to mapping_min_order in filemap_range_has

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Message-ID: <ZQiWJdjFPvVbCj1B@bombadil.infradead.org>
Date:   Mon, 18 Sep 2023 11:25:41 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Pankaj Raghav <kernel@...kajraghav.com>, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, p.raghav@...sung.com,
        david@...morbit.com, da.gomez@...sung.com,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        djwong@...nel.org, linux-mm@...ck.org, chandan.babu@...cle.com,
        gost.dev@...sung.com
Subject: Re: [RFC 05/23] filemap: align index to mapping_min_order in
 filemap_range_has_page()

On Fri, Sep 15, 2023 at 08:45:20PM +0100, Matthew Wilcox wrote:
> On Fri, Sep 15, 2023 at 08:38:30PM +0200, Pankaj Raghav wrote:
> > From: Luis Chamberlain <mcgrof@...nel.org>
> > 
> > page cache is mapping min_folio_order aligned. Use mapping min_folio_order
> > to align the start_byte and end_byte in filemap_range_has_page().
> 
> What goes wrong if you don't?  Seems to me like it should work.

Will drop from the series after confirming, thanks.

  Luis