The patch titled Subject: revert-mm-skip-cma-pages-when-they-are-not-available-update has been added to the -mm mm-hotfixes-unstable branch. Its filename is revert-mm-skip-cma-pages-when-they-are-not-available-update.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: Usama Arif usamaarif642@gmail.com Subject: revert-mm-skip-cma-pages-when-they-are-not-available-update Date: Wed, 21 Aug 2024 20:26:07 +0100

also revert b7108d66318a ("Multi-gen LRU: skip CMA pages when they are not eligible"), per Johannes

Link: https://lkml.kernel.org/r/9060a32d-b2d7-48c0-8626-1db535653c54@gmail.com Link: https://lkml.kernel.org/r/357ac325-4c61-497a-92a3-bdbd230d5ec9@gmail.com Fixes: 5da226dbfce3 ("mm: skip CMA pages when they are not available") Signed-off-by: Usama Arif usamaarif642@gmail.com Acked-by: Johannes Weiner hannes@cmpxchg.org Cc: Bharata B Rao bharata@amd.com Cc: Breno Leitao leitao@debian.org Cc: David Hildenbrand david@redhat.com Cc: Johannes Weiner hannes@cmpxchg.org Cc: Matthew Wilcox willy@infradead.org Cc: Rik van Riel riel@surriel.com Cc: Vlastimil Babka vbabka@suse.cz Cc: Yu Zhao yuzhao@google.com Cc: Zhaoyang Huang huangzhaoyang@gmail.com Cc: Zhaoyang Huang zhaoyang.huang@unisoc.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/vmscan.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-)

--- a/mm/vmscan.c~revert-mm-skip-cma-pages-when-they-are-not-available-update +++ a/mm/vmscan.c @@ -4253,25 +4253,6 @@ void lru_gen_soft_reclaim(struct mem_cgr

#endif /* CONFIG_MEMCG */

-#ifdef CONFIG_CMA -/* - * It is waste of effort to scan and reclaim CMA pages if it is not available - * for current allocation context. Kswapd can not be enrolled as it can not - * distinguish this scenario by using sc->gfp_mask = GFP_KERNEL - */ -static bool skip_cma(struct folio *folio, struct scan_control *sc) -{ - return !current_is_kswapd() && - gfp_migratetype(sc->gfp_mask) != MIGRATE_MOVABLE && - folio_migratetype(folio) == MIGRATE_CMA; -} -#else -static bool skip_cma(struct folio *folio, struct scan_control *sc) -{ - return false; -} -#endif - /****************************************************************************** * the eviction ******************************************************************************/ @@ -4319,7 +4300,7 @@ static bool sort_folio(struct lruvec *lr }

/* ineligible */ - if (zone > sc->reclaim_idx || skip_cma(folio, sc)) { + if (zone > sc->reclaim_idx) { gen = folio_inc_gen(lruvec, folio, false); list_move_tail(&folio->lru, &lrugen->folios[gen][type][zone]); return true; _

Patches currently in -mm which might be from usamaarif642@gmail.com are

revert-mm-skip-cma-pages-when-they-are-not-available.patch revert-mm-skip-cma-pages-when-they-are-not-available-update.patch