linux-kernel - Re: [RFC v2 01/14] fs: Allow fine-grained control of folio sizes

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Date: Tue, 13 Feb 2024 13:03:49 +0100
From: Hannes Reinecke <hare@...e.de>
To: "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>,
 linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc: mcgrof@...nel.org, gost.dev@...sung.com, akpm@...ux-foundation.org,
 kbusch@...nel.org, djwong@...nel.org, chandan.babu@...cle.com,
 p.raghav@...sung.com, linux-kernel@...r.kernel.org, willy@...radead.org,
 linux-mm@...ck.org, david@...morbit.com
Subject: Re: [RFC v2 01/14] fs: Allow fine-grained control of folio sizes

On 2/13/24 10:37, Pankaj Raghav (Samsung) 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.
> The max folio order parameter is ignored and it is always set to
> MAX_PAGECACHE_ORDER.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
> Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
> ---
>   include/linux/pagemap.h | 92 ++++++++++++++++++++++++++++++++---------
>   1 file changed, 73 insertions(+), 19 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes