Commit 72556a4c authored by Alex Shi (tencent)'s avatar Alex Shi (tencent) Committed by Andrew Morton
Browse files

mm/ksm: use ksm_get_folio in scan_get_next_rmap_item 

Save a compound_head call.

Link: https://lkml.kernel.org/r/20240411061713.1847574-7-alexs@kernel.org


Signed-off-by: default avatarAlex Shi (tencent) <alexs@kernel.org>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Cc: Izik Eidus <izik.eidus@ravellosystems.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 6f528de2

mm/ksm.c

+5 −5
Original line number Diff line number Diff line
@@ -2611,14 +2611,14 @@ static struct ksm_rmap_item *scan_get_next_rmap_item(struct page **page) 
		 */

		if (!ksm_merge_across_nodes) {

			struct ksm_stable_node *stable_node, *next;

			struct page *page;

			struct folio *folio;



			list_for_each_entry_safe(stable_node, next,

						 &migrate_nodes, list) {

				page = get_ksm_page(stable_node,

				folio = ksm_get_folio(stable_node,

						      GET_KSM_PAGE_NOLOCK);

				if (page)

					put_page(page);

				if (folio)

					folio_put(folio);

				cond_resched();

			}

		}