Messages in this thread Patch in this message | | | From | "Pankaj Raghav (Samsung)" <> | Subject | [PATCH v3 07/11] mm: do not split a folio if it has minimum folio order requirement | Date | Wed, 13 Mar 2024 18:02:49 +0100 |
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From: Pankaj Raghav <p.raghav@samsung.com>
As we don't have a way to split a folio to a any given lower folio order yet, avoid splitting the folio in split_huge_page_to_list() if it has a minimum folio order requirement.
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> --- mm/huge_memory.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 81fd1ba57088..6ec3417638a1 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -3030,6 +3030,19 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) goto out; } + /* + * Do not split if mapping has minimum folio order + * requirement. + * + * XXX: Once we have support for splitting to any lower + * folio order, then it could be split based on the + * min_folio_order. + */ + if (mapping_min_folio_order(mapping)) { + ret = -EAGAIN; + goto out; + } + gfp = current_gfp_context(mapping_gfp_mask(mapping) & GFP_RECLAIM_MASK); -- 2.43.0
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