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41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
From bec433f29537652ed054148edfd7e2183ddcf7c3 Mon Sep 17 00:00:00 2001
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From: "T.J. Alumbaugh" <talumbau@google.com>
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Date: Wed, 18 Jan 2023 00:18:25 +0000
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Subject: [PATCH 16/19] UPSTREAM: mm: multi-gen LRU: improve
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lru_gen_exit_memcg()
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Add warnings and poison ->next.
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Link: https://lkml.kernel.org/r/20230118001827.1040870-6-talumbau@google.com
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Change-Id: I53de9e04c1ae941e122b33cd45d2bbb5f34aae0c
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Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
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Cc: Yu Zhao <yuzhao@google.com>
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Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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(cherry picked from commit 37cc99979d04cca677c0ad5c0acd1149ec165d1b)
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Bug: 274865848
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Signed-off-by: T.J. Mercier <tjmercier@google.com>
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---
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mm/vmscan.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- a/mm/vmscan.c
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+++ b/mm/vmscan.c
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@@ -6172,12 +6172,17 @@ void lru_gen_exit_memcg(struct mem_cgrou
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int i;
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int nid;
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+ VM_WARN_ON_ONCE(!list_empty(&memcg->mm_list.fifo));
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+
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for_each_node(nid) {
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struct lruvec *lruvec = get_lruvec(memcg, nid);
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+ VM_WARN_ON_ONCE(lruvec->mm_state.nr_walkers);
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VM_WARN_ON_ONCE(memchr_inv(lruvec->lrugen.nr_pages, 0,
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sizeof(lruvec->lrugen.nr_pages)));
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+ lruvec->lrugen.list.next = LIST_POISON1;
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+
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for (i = 0; i < NR_BLOOM_FILTERS; i++) {
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bitmap_free(lruvec->mm_state.filters[i]);
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lruvec->mm_state.filters[i] = NULL;
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