The patch titled
Subject: mm/memory-failure.c: dissolve truncated hugetlb page
has been added to the -mm tree. Its filename is
mm-memory-failurec-dissolve-truncated-hugetlb-page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-memory-failurec-dissolve-truncated-hugetlb-page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-memory-failurec-dissolve-truncated-hugetlb-page.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/memory-failure.c: dissolve truncated hugetlb page
If me_huge_page meets a truncated huge page, hpage won't be dissolved even
if we hold the last refcnt. It's because the truncated huge page has NULL
page_mapping while it's not anonymous page too. Thus we lose the last
chance to dissolve it into buddy to save healthy subpages. Remove
PageAnon check to handle these huge pages too.
Link: https://lkml.kernel.org/r/20220407130352.15618-4-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/memory-failure.c~mm-memory-failurec-dissolve-truncated-hugetlb-page
+++ a/mm/memory-failure.c
@@ -1046,8 +1046,7 @@ static int me_huge_page(struct page_stat
* hugepage, so we can free and dissolve it into buddy to
* save healthy subpages.
*/
- if (PageAnon(hpage))
- put_page(hpage);
+ put_page(hpage);
if (__page_handle_poison(p)) {
page_ref_inc(p);
res = MF_RECOVERED;
_
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
