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

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On 2/13/24 10:37, Pankaj Raghav (Samsung) wrote:
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>

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@xxxxxxxxxxxxx>
Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
  include/linux/pagemap.h | 92 ++++++++++++++++++++++++++++++++---------
  1 file changed, 73 insertions(+), 19 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes






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