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mm: allow non-hugetlb large folios to be batch processed 

Hugetlb folios still get special treatment, but normal large folios can
now be freed by free_unref_folios().  This should have a reasonable
performance impact, TBD.

Link: https://lkml.kernel.org/r/20240227174254.710559-11-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-02-27 17:42:44 +00:00 committed by Andrew Morton
parent 31b2ff82ae
commit f77171d241
1 changed files with 3 additions and 2 deletions
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5
mm/swap.c
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@ -1003,12 +1003,13 @@ void folios_put_refs(struct folio_batch *folios, unsigned int *refs)
if (!folio_ref_sub_and_test(folio, nr_refs))
continue;
if (folio_test_large(folio)) {
/* hugetlb has its own memcg */
if (folio_test_hugetlb(folio)) {
if (lruvec) {
unlock_page_lruvec_irqrestore(lruvec, flags);
lruvec = NULL;
}
__folio_put_large(folio);
free_huge_folio(folio);
continue;
}