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mm: use free_unref_folios() in put_pages_list()
Break up the list of folios into batches here so that the folios are more likely to be cache hot when doing the rest of the processing. Link: https://lkml.kernel.org/r/20240227174254.710559-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: David Hildenbrand <david@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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parent
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commit
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17
mm/swap.c
17
mm/swap.c
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@ -138,22 +138,25 @@ EXPORT_SYMBOL(__folio_put);
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*/
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void put_pages_list(struct list_head *pages)
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{
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struct folio *folio, *next;
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struct folio_batch fbatch;
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struct folio *folio;
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list_for_each_entry_safe(folio, next, pages, lru) {
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if (!folio_put_testzero(folio)) {
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list_del(&folio->lru);
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folio_batch_init(&fbatch);
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list_for_each_entry(folio, pages, lru) {
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if (!folio_put_testzero(folio))
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continue;
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}
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if (folio_test_large(folio)) {
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list_del(&folio->lru);
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__folio_put_large(folio);
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continue;
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}
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/* LRU flag must be clear because it's passed using the lru */
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if (folio_batch_add(&fbatch, folio) > 0)
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continue;
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free_unref_folios(&fbatch);
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}
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free_unref_page_list(pages);
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if (fbatch.nr)
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free_unref_folios(&fbatch);
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INIT_LIST_HEAD(pages);
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}
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EXPORT_SYMBOL(put_pages_list);
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