Subject: + hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page.patch added to -mm tree
To: n-horiguchi@xxxxxxxxxxxxx,andi@xxxxxxxxxxxxxx,fengguang.wu@xxxxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx,tony.luck@xxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 22 Aug 2013 15:52:51 -0700
The patch titled
Subject: hwpoison: always unset MIGRATE_ISOLATE before returning from soft_offline_page()
has been added to the -mm tree. Its filename is
hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page.patch
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------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: hwpoison: always unset MIGRATE_ISOLATE before returning from soft_offline_page()
Soft offline code expects that MIGRATE_ISOLATE is set on the target page
only during soft offlining work. But currenly it doesn't work as expected
when get_any_page() fails and returns negative value. In the result, end
users can have unexpectedly isolated pages. This patch just fixes it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/memory-failure.c~hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page mm/memory-failure.c
--- a/mm/memory-failure.c~hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page
+++ a/mm/memory-failure.c
@@ -1550,7 +1550,7 @@ int soft_offline_page(struct page *page,
ret = get_any_page(page, pfn, flags);
if (ret < 0)
- return ret;
+ goto unset;
if (ret) { /* for in-use pages */
if (PageHuge(page))
ret = soft_offline_huge_page(page, flags);
@@ -1567,6 +1567,7 @@ int soft_offline_page(struct page *page,
atomic_long_inc(&num_poisoned_pages);
}
}
+unset:
unset_migratetype_isolate(page, MIGRATE_MOVABLE);
return ret;
}
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
mm-hugetlb-move-up-the-code-which-check-availability-of-free-huge-page.patch
mm-hugetlb-trivial-commenting-fix.patch
mm-hugetlb-clean-up-alloc_huge_page.patch
mm-hugetlb-fix-and-clean-up-node-iteration-code-to-alloc-or-free.patch
mm-hugetlb-remove-redundant-list_empty-check-in-gather_surplus_pages.patch
mm-hugetlb-do-not-use-a-page-in-page-cache-for-cow-optimization.patch
mm-hugetlb-add-vm_noreserve-check-in-vma_has_reserves.patch
mm-hugetlb-remove-decrement_hugepage_resv_vma.patch
mm-hugetlb-decrement-reserve-count-if-vm_noreserve-alloc-page-cache.patch
mm-hugetlb-protect-reserved-pages-when-soft-offlining-a-hugepage.patch
mm-hugetlb-change-variable-name-reservations-to-resv.patch
mm-hugetlb-fix-subpool-accounting-handling.patch
mm-hugetlb-remove-useless-check-about-mapping-type.patch
mm-hugetlb-grab-a-page_table_lock-after-page_cache_release.patch
mm-hugetlb-return-a-reserved-page-to-a-reserved-pool-if-failed.patch
mm-migrate-make-core-migration-code-aware-of-hugepage.patch
mm-soft-offline-use-migrate_pages-instead-of-migrate_huge_page.patch
migrate-add-hugepage-migration-code-to-migrate_pages.patch
mm-migrate-add-hugepage-migration-code-to-move_pages.patch
mm-mbind-add-hugepage-migration-code-to-mbind.patch
mm-migrate-remove-vm_hugetlb-from-vma-flag-check-in-vma_migratable.patch
mm-memory-hotplug-enable-memory-hotplug-to-handle-hugepage.patch
mm-memory-hotplug-enable-memory-hotplug-to-handle-hugepage-fix.patch
mm-migrate-check-movability-of-hugepage-in-unmap_and_move_huge_page.patch
mm-prepare-to-remove-proc-sys-vm-hugepages_treat_as_movable.patch
mm-prepare-to-remove-proc-sys-vm-hugepages_treat_as_movable-v2.patch
mm-prepare-to-remove-proc-sys-vm-hugepages_treat_as_movable-v2-fix.patch
mm-mempolicy-rename-check_range-to-queue_pages_range.patch
hwpoison-always-unset-migrate_isolate-before-returning-from-soft_offline_page.patch
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