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mm: use free_unref_folios() in put_pages_list()

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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>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-02-27 17:42:41 +00:00 committed by Andrew Morton
parent 7c33b8c422
commit 24835f899c
1 changed files with 10 additions and 7 deletions
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17
mm/swap.c
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@ -138,22 +138,25 @@ EXPORT_SYMBOL(__folio_put);
*/
void put_pages_list(struct list_head *pages)
{
struct folio *folio, *next;
struct folio_batch fbatch;
struct folio *folio;
list_for_each_entry_safe(folio, next, pages, lru) {
if (!folio_put_testzero(folio)) {
list_del(&folio->lru);
folio_batch_init(&fbatch);
list_for_each_entry(folio, pages, lru) {
if (!folio_put_testzero(folio))
continue;
}
if (folio_test_large(folio)) {
list_del(&folio->lru);
__folio_put_large(folio);
continue;
}
/* LRU flag must be clear because it's passed using the lru */
if (folio_batch_add(&fbatch, folio) > 0)
continue;
free_unref_folios(&fbatch);
}
free_unref_page_list(pages);
if (fbatch.nr)
free_unref_folios(&fbatch);
INIT_LIST_HEAD(pages);
}
EXPORT_SYMBOL(put_pages_list);