Commit b7542769 authored by Kefeng Wang's avatar Kefeng Wang Committed by Andrew Morton
Browse files

mm: huge_memory: use more folio api in __split_huge_page_tail() 

Use more folio APIs to save six compound_head() calls in
__split_huge_page_tail().

Link: https://lkml.kernel.org/r/20231110033324.2455523-5-wangkefeng.wang@huawei.com


Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 39042079

mm/huge_memory.c

+6 −6
Original line number Diff line number Diff line
@@ -2509,13 +2509,13 @@ static void __split_huge_page_tail(struct folio *folio, int tail, 
	clear_compound_head(page_tail);



	/* Finally unfreeze refcount. Additional reference from page cache. */

	page_ref_unfreeze(page_tail, 1 + (!PageAnon(head) ||

					  PageSwapCache(head)));

	page_ref_unfreeze(page_tail, 1 + (!folio_test_anon(folio) ||

					  folio_test_swapcache(folio)));



	if (page_is_young(head))

		set_page_young(page_tail);

	if (page_is_idle(head))

		set_page_idle(page_tail);

	if (folio_test_young(folio))

		folio_set_young(new_folio);

	if (folio_test_idle(folio))

		folio_set_idle(new_folio);



	folio_xchg_last_cpupid(new_folio, folio_last_cpupid(folio));