[PATCH 7/8] mm/mglru: Check PG_dropcache instead of PG_reclaim in lru_gen_folio_seq()
From: Kirill A. Shutemov <hidden>
Date: 2025-01-13 09:35:25
Also in:
linux-fsdevel, lkml
Subsystem:
memory management - core, memory management - mglru (multi-gen lru), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Kernel sets PG_dropcache instead of PG_reclaim everywhere. Check PG_dropcache in lru_gen_folio_seq(). No need to check for dirty and writeback as there's no conflict with PG_readahead anymore. Signed-off-by: Kirill A. Shutemov <redacted> --- include/linux/mm_inline.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index f9157a0c42a5..f353d3c610ac 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h@@ -241,8 +241,7 @@ static inline unsigned long lru_gen_folio_seq(struct lruvec *lruvec, struct foli else if (reclaiming) gen = MAX_NR_GENS; else if ((!folio_is_file_lru(folio) && !folio_test_swapcache(folio)) || - (folio_test_reclaim(folio) && - (folio_test_dirty(folio) || folio_test_writeback(folio)))) + folio_test_dropbehind(folio)) gen = MIN_NR_GENS; else gen = MAX_NR_GENS - folio_test_workingset(folio);
--
2.45.2