linux-kernel - Re: [PATCH] mm/filemap: allocate folios according to the blocksize

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Date:   Fri, 14 Apr 2023 14:56:25 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Hannes Reinecke <hare@...e.de>
Cc:     Pankaj Raghav <p.raghav@...sung.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mcgrof@...nel.org
Subject: Re: [PATCH] mm/filemap: allocate folios according to the blocksize

On Fri, Apr 14, 2023 at 03:49:08PM +0200, Hannes Reinecke wrote:
> If the blocksize is larger than the pagesize allocate folios
> with the correct order.

I think you also need to get the one in page_cache_ra_unbounded()
and page_cache_ra_order() also needs some love?

It might help to put an assertion in __filemap_add_folio() to be sure
we're not doing something unacceptable.