linux-kernel - Re: [RFC 1/4] fs: Allow fine-grained control of folio sizes

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Date:   Wed, 21 Jun 2023 11:02:51 +0200
From:   Hannes Reinecke <hare@...e.de>
To:     Pankaj Raghav <p.raghav@...sung.com>, willy@...radead.org,
        david@...morbit.com
Cc:     gost.dev@...sung.com, mcgrof@...nel.org, hch@....de,
        jwong@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC 1/4] fs: Allow fine-grained control of folio sizes

On 6/21/23 10:38, Pankaj Raghav wrote:
> From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
> 
> Some filesystems want to be able to limit the maximum size of folios,
> and some want to be able to ensure that folios are at least a certain
> size.  Add mapping_set_folio_orders() to allow this level of control
> (although it is not yet honoured).
> 
> [Pankaj]: added mapping_min_folio_order()
> 
> Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> ---
>   include/linux/pagemap.h | 46 +++++++++++++++++++++++++++++++++++++----
>   1 file changed, 42 insertions(+), 4 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes