The patch titled Subject: mm/mglru: check PG_dropbehind instead of PG_reclaim in lru_gen_folio_seq() has been added to the -mm mm-unstable branch. Its filename is mm-mglru-check-pg_dropbehind-instead-of-pg_reclaim-in-lru_gen_folio_seq.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mglru-check-pg_dropbehind-instead-of-pg_reclaim-in-lru_gen_folio_seq.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> Subject: mm/mglru: check PG_dropbehind instead of PG_reclaim in lru_gen_folio_seq() Date: Thu, 30 Jan 2025 12:00:46 +0200 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. Link: https://lkml.kernel.org/r/20250130100050.1868208-9-kirill.shutemov@xxxxxxxxxxxxxxx Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Acked-by: David Hildenbrand <david@xxxxxxxxxx> Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx> Cc: Chengming Zhou <chengming.zhou@xxxxxxxxx> Cc: Christian Brauner <brauner@xxxxxxxxxx> Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Cc: Dave Airlie <airlied@xxxxxxxxx> Cc: gehao <gehao@xxxxxxxxxx> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> Cc: Jason A. Donenfeld <jason@xxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Jonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> Cc: Josef Bacik <josef@xxxxxxxxxxxxxx> Cc: "Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> Cc: Mattew Wilcox <willy@xxxxxxxxxxxxx> Cc: Miklos Szeredi <miklos@xxxxxxxxxx> Cc: Nhat Pham <nphamcs@xxxxxxxxx> Cc: Oscar Salvador <osalvador@xxxxxxx> Cc: Ran Xiaokai <ran.xiaokai@xxxxxxxxxx> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Cc: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Cc: Tvrtko Ursulin <tursulin@xxxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx> Cc: Yu Zhao <yuzhao@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/mm_inline.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/include/linux/mm_inline.h~mm-mglru-check-pg_dropbehind-instead-of-pg_reclaim-in-lru_gen_folio_seq +++ a/include/linux/mm_inline.h @@ -241,8 +241,7 @@ static inline unsigned long lru_gen_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); _ Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are mm-migrate-transfer-pg_dropbehind-to-the-new-folio.patch drm-i915-gem-convert-__shmem_writeback-to-folios.patch drm-i915-gem-use-pg_dropbehind-instead-of-pg_reclaim.patch mm-zswap-use-pg_dropbehind-instead-of-pg_reclaim.patch mm-truncate-use-folio_set_dropbehind-instead-of-deactivate_file_folio.patch mm-vmscan-use-pg_dropbehind-instead-of-pg_reclaim.patch mm-vmscan-use-pg_dropbehind-instead-of-pg_reclaim-in-shrink_folio_list.patch mm-mglru-check-pg_dropbehind-instead-of-pg_reclaim-in-lru_gen_folio_seq.patch mm-remove-pg_reclaim.patch mm-vmscan-do-not-demote-pg_dropbehind-folios.patch mm-rename-pg_dropbehind-to-pg_reclaim.patch