From: Kefeng Wang wangkefeng.wang@huawei.com
mainline inclusion from mainline-v6.8-rc1 commit b75427691f4a1fd3625d1f4c016832b8c75c2326 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I9OCYO CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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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.co... Signed-off-by: Kefeng Wang wangkefeng.wang@huawei.com Reviewed-by: Matthew Wilcox (Oracle) willy@infradead.org Signed-off-by: Andrew Morton akpm@linux-foundation.org [ Dep-of: c010d47f107f ("mm: thp: split huge page to any lower order pages"). ] Signed-off-by: Liu Shixin liushixin2@huawei.com --- mm/huge_memory.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 6c277b55544c..b41f3d607c67 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2725,13 +2725,13 @@ 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));