The patch titled
Subject: mm/memory-failure.c: avoid false-postive PageSwapCache test
has been added to the -mm tree. Its filename is
mm-memory-failurec-avoid-false-postive-pageswapcache-test.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-memory-failurec-avoid-false-postive-pageswapcache-test.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-memory-failurec-avoid-false-postive-pageswapcache-test.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/memory-failure.c: avoid false-postive PageSwapCache test
Patch series "A few fixup and cleanup patches for memory failure".
This series contains a patch to fix false-postive PageSwapCache test,
minor cleanup for HWPoisonHandlable and try to dissolve truncated hugetlb
page. More details can be found in the respective changelogs.
This patch (of 3):
PageSwapCache is only reliable when PageAnon is true because PG_swapcache
serves as PG_owner_priv_1 which can be used by fs if it's pagecache page.
So we should test PageAnon to distinguish pagecache page from swapcache
page to avoid false-postive PageSwapCache test.
Link: https://lkml.kernel.org/r/20220407130352.15618-1-linmiaohe@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20220407130352.15618-2-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory-failure.c~mm-memory-failurec-avoid-false-postive-pageswapcache-test
+++ a/mm/memory-failure.c
@@ -2262,7 +2262,7 @@ static int __soft_offline_page(struct pa
return 0;
}
- if (!PageHuge(page) && PageLRU(page) && !PageSwapCache(page))
+ if (!PageHuge(page) && PageLRU(page) && !PageAnon(page))
/*
* Try to invalidate first. This should work for
* non dirty unmapped page cache pages.
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-mempolicy-fix-mpol_new-leak-in-shared_policy_replace.patch
mm-shmem-make-shmem_init-return-void.patch
mm-memcg-remove-unneeded-nr_scanned.patch
mm-mmapc-use-helper-mlock_future_check.patch
mm-mremap-use-helper-mlock_future_check.patch
mm-mremap-avoid-unneeded-do_munmap-call.patch
mm-memory-failurec-avoid-false-postive-pageswapcache-test.patch
mm-memory-failurec-minor-cleanup-for-hwpoisonhandlable.patch
mm-memory-failurec-dissolve-truncated-hugetlb-page.patch
mm-z3fold-declare-z3fold_mount-with-__init.patch
mm-z3fold-remove-obsolete-comment-in-z3fold_alloc.patch
mm-z3fold-minor-clean-up-for-z3fold_free.patch
mm-z3fold-remove-unneeded-page_mapcount_reset-and-clearpageprivate.patch
mm-z3fold-remove-confusing-local-variable-l-reassignment.patch
mm-z3fold-move-decrement-of-pool-pages_nr-into-__release_z3fold_page.patch
mm-z3fold-remove-redundant-list_del_init-of-zhdr-buddy-in-z3fold_free.patch
mm-z3fold-remove-unneeded-page_headless-check-in-free_handle.patch
mm-compaction-use-helper-isolation_suitable.patch
drivers-base-nodec-fix-compaction-sysfs-file-leak.patch
mm-migration-remove-unneeded-local-variable-mapping_locked.patch
mm-migration-remove-unneeded-out-label.patch
mm-migration-remove-unneeded-local-variable-page_lru.patch
mm-migration-fix-the-confusing-pagetranshuge-check.patch
mm-migration-use-helper-function-vma_lookup-in-add_page_for_migration.patch
mm-migration-use-helper-macro-min-in-do_pages_stat.patch
mm-migration-avoid-unneeded-nodemask_t-initialization.patch
mm-migration-remove-some-duplicated-codes-in-migrate_pages.patch
mm-migration-fix-potential-page-refcounts-leak-in-migrate_pages.patch
mm-migration-fix-potential-invalid-node-access-for-reclaim-based-migration.patch
mm-migration-fix-possible-do_pages_stat_array-racing-with-memory-offline.patch
