Commit 76f1a826 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

ksm: convert should_skip_rmap_item() to take a folio 

Remove a call to PageKSM() by passing the folio containing tmp_page to
should_skip_rmap_item.  Removes a hidden call to compound_head().

Link: https://lkml.kernel.org/r/20241002152533.1350629-4-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: default avatarDavid Hildenbrand <david@redhat.com>
Cc: Alex Shi <alexs@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 98c3ca00

mm/ksm.c

+4 −4
Original line number Diff line number Diff line
@@ -2402,10 +2402,10 @@ static unsigned int skip_age(rmap_age_t age) 
/*

 * Determines if a page should be skipped for the current scan.

 *

 * @page: page to check

 * @folio: folio containing the page to check

 * @rmap_item: associated rmap_item of page

 */

static bool should_skip_rmap_item(struct page *page,

static bool should_skip_rmap_item(struct folio *folio,

				  struct ksm_rmap_item *rmap_item)

{

	rmap_age_t age;
@@ -2418,7 +2418,7 @@ static bool should_skip_rmap_item(struct page *page, 
	 * will essentially ignore them, but we still have to process them

	 * properly.

	 */

	if (PageKsm(page))

	if (folio_test_ksm(folio))

		return false;



	age = rmap_item->age;
@@ -2561,7 +2561,7 @@ static struct ksm_rmap_item *scan_get_next_rmap_item(struct page **page) 
					ksm_scan.rmap_list =

							&rmap_item->rmap_list;



					if (should_skip_rmap_item(tmp_page, rmap_item)) {

					if (should_skip_rmap_item(folio, rmap_item)) {

						folio_put(folio);

						goto next_page;

					}