[merged mm-stable] mm-unstable-multi-gen-lru-fix-can_swap-in-lru_gen_look_around.patch removed from -mm tree

[merged mm-stable] mm-unstable-multi-gen-lru-fix-can_swap-in-lru_gen_look_around.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: Multi-gen LRU: fix can_swap in lru_gen_look_around()
has been removed from the -mm tree.  Its filename was
     mm-unstable-multi-gen-lru-fix-can_swap-in-lru_gen_look_around.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Kalesh Singh <kaleshsingh@google.com>
Subject: Multi-gen LRU: fix can_swap in lru_gen_look_around()
Date: Tue, 1 Aug 2023 19:56:04 -0700

walk->can_swap might be invalid since it's not guaranteed to be
initialized for the particular lruvec.  Instead deduce it from the folio
type (anon/file).

Link: https://lkml.kernel.org/r/20230802025606.346758-3-kaleshsingh@google.com
Fixes: 018ee47f1489 ("mm: multi-gen LRU: exploit locality in rmap")
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> [mediatek]
Tested-by: Charan Teja Kalla <quic_charante@quicinc.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Aneesh Kumar K V <aneesh.kumar@linux.ibm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
Cc: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Steven Barrett <steven@liquorix.net>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmscan.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/mm/vmscan.c~mm-unstable-multi-gen-lru-fix-can_swap-in-lru_gen_look_around
+++ a/mm/vmscan.c
@@ -4656,6 +4656,7 @@ void lru_gen_look_around(struct page_vma
 	pte_t *pte = pvmw->pte;
 	unsigned long addr = pvmw->address;
 	struct folio *folio = pfn_folio(pvmw->pfn);
+	bool can_swap = !folio_is_file_lru(folio);
 	struct mem_cgroup *memcg = folio_memcg(folio);
 	struct pglist_data *pgdat = folio_pgdat(folio);
 	struct lruvec *lruvec = mem_cgroup_lruvec(memcg, pgdat);
@@ -4704,7 +4705,7 @@ void lru_gen_look_around(struct page_vma
 		if (!pte_young(ptent))
 			continue;
 
-		folio = get_pfn_folio(pfn, memcg, pgdat, !walk || walk->can_swap);
+		folio = get_pfn_folio(pfn, memcg, pgdat, can_swap);
 		if (!folio)
 			continue;
 
_

Patches currently in -mm which might be from kaleshsingh@google.com are