From: Andrew Morton <akpm@linux-foundation.org>
To: aneesh.kumar@linux.ibm.com, aneesh.kumar@linux.vnet.ibm.com,
cai@lca.pw, dave.hansen@intel.com, david@redhat.com,
mhocko@suse.com, mike.kravetz@oracle.com,
mm-commits@vger.kernel.org, n-horiguchi@ah.jp.nec.com,
naoya.horiguchi@nec.com, osalvador@suse.com, osalvador@suse.de,
tony.luck@intel.com, zeil@yandex-team.ru
Subject: + mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch added to -mm tree
Date: Fri, 31 Jul 2020 13:06:07 -0700 [thread overview]
Message-ID: <20200731200607.I-uc24clU%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200723211432.b31831a0df3bc2cbdae31b40@linux-foundation.org>
The patch titled
Subject: mm,hwpoison: unify THP handling for hard and soft offline
has been added to the -mm tree. Its filename is
mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Oscar Salvador <osalvador@suse.de>
Subject: mm,hwpoison: unify THP handling for hard and soft offline
Place the THP's page handling in a helper and use it from both hard and
soft-offline machinery, so we get rid of some duplicated code.
Link: http://lkml.kernel.org/r/20200731122112.11263-11-nao.horiguchi@gmail.com
Signed-off-by: Oscar Salvador <osalvador@suse.com>
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/memory-failure.c | 48 +++++++++++++++++++-----------------------
1 file changed, 22 insertions(+), 26 deletions(-)
--- a/mm/memory-failure.c~mmhwpoison-unify-thp-handling-for-hard-and-soft-offline
+++ a/mm/memory-failure.c
@@ -1103,6 +1103,25 @@ static int identify_page_state(unsigned
return page_action(ps, p, pfn);
}
+static int try_to_split_thp_page(struct page *page, const char *msg)
+{
+ lock_page(page);
+ if (!PageAnon(page) || unlikely(split_huge_page(page))) {
+ unsigned long pfn = page_to_pfn(page);
+
+ unlock_page(page);
+ if (!PageAnon(page))
+ pr_info("%s: %#lx: non anonymous thp\n", msg, pfn);
+ else
+ pr_info("%s: %#lx: thp split failed\n", msg, pfn);
+ put_page(page);
+ return -EBUSY;
+ }
+ unlock_page(page);
+
+ return 0;
+}
+
static int memory_failure_hugetlb(unsigned long pfn, int flags)
{
struct page *p = pfn_to_page(pfn);
@@ -1325,21 +1344,8 @@ int memory_failure(unsigned long pfn, in
}
if (PageTransHuge(hpage)) {
- lock_page(p);
- if (!PageAnon(p) || unlikely(split_huge_page(p))) {
- unlock_page(p);
- if (!PageAnon(p))
- pr_err("Memory failure: %#lx: non anonymous thp\n",
- pfn);
- else
- pr_err("Memory failure: %#lx: thp split failed\n",
- pfn);
- if (TestClearPageHWPoison(p))
- num_poisoned_pages_dec();
- put_page(p);
+ if (try_to_split_thp_page(p, "Memory Failure") < 0)
return -EBUSY;
- }
- unlock_page(p);
VM_BUG_ON_PAGE(!page_count(p), p);
}
@@ -1847,19 +1853,9 @@ static int soft_offline_in_use_page(stru
int mt;
struct page *hpage = compound_head(page);
- if (!PageHuge(page) && PageTransHuge(hpage)) {
- lock_page(page);
- if (!PageAnon(page) || unlikely(split_huge_page(page))) {
- unlock_page(page);
- if (!PageAnon(page))
- pr_info("soft offline: %#lx: non anonymous thp\n", page_to_pfn(page));
- else
- pr_info("soft offline: %#lx: thp split failed\n", page_to_pfn(page));
- put_page(page);
+ if (!PageHuge(page) && PageTransHuge(hpage))
+ if (try_to_split_thp_page(page, "soft offline") < 0)
return -EBUSY;
- }
- unlock_page(page);
- }
/*
* Setting MIGRATE_ISOLATE here ensures that the page will be linked
_
Patches currently in -mm which might be from osalvador@suse.de are
mmmadvise-refactor-madvise_inject_error.patch
mmhwpoison-un-export-get_hwpoison_page-and-make-it-static.patch
mmhwpoison-kill-put_hwpoison_page.patch
mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
mmhwpoison-rework-soft-offline-for-free-pages.patch
mmhwpoison-rework-soft-offline-for-in-use-pages.patch
mmhwpoison-refactor-soft_offline_huge_page-and-__soft_offline_page.patch
mmhwpoison-return-0-if-the-page-is-already-poisoned-in-soft-offline.patch
next prev parent reply other threads:[~2020-07-31 20:06 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 4:14 incoming Andrew Morton
2020-07-24 4:15 ` [patch 01/15] mm/memory.c: avoid access flag update TLB flush for retried page fault Andrew Morton
[not found] ` <30cf7356-bef1-c621-60cb-e12a8bd9111d@linux.alibaba.com>
2020-07-24 4:56 ` Andrew Morton
2020-07-24 4:15 ` [patch 02/15] mm/mmap.c: close race between munmap() and expand_upwards()/downwards() Andrew Morton
2020-07-24 4:15 ` [patch 03/15] vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way Andrew Morton
2020-07-24 4:15 ` [patch 04/15] mm: initialize return of vm_insert_pages Andrew Morton
2020-07-24 4:15 ` [patch 05/15] mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages() Andrew Morton
2020-07-24 4:15 ` [patch 06/15] mm/memcg: fix refcount error while moving and swapping Andrew Morton
2020-07-24 4:15 ` [patch 07/15] mm: memcg/slab: fix memory leak at non-root kmem_cache destroy Andrew Morton
2020-07-24 4:15 ` [patch 08/15] mm/hugetlb: avoid hardcoding while checking if cma is enabled Andrew Morton
2020-07-24 4:15 ` [patch 09/15] khugepaged: fix null-pointer dereference due to race Andrew Morton
2020-07-24 4:15 ` [patch 10/15] mailmap: add entry for Mike Rapoport Andrew Morton
2020-07-24 4:15 ` [patch 11/15] squashfs: fix length field overlap check in metadata reading Andrew Morton
2020-07-24 4:15 ` [patch 12/15] scripts/decode_stacktrace: strip basepath from all paths Andrew Morton
2020-07-24 4:15 ` [patch 13/15] io-mapping: indicate mapping failure Andrew Morton
2020-07-24 4:15 ` [patch 14/15] MAINTAINERS: add KCOV section Andrew Morton
2020-07-24 4:15 ` [patch 15/15] scripts/gdb: fix lx-symbols 'gdb.error' while loading modules Andrew Morton
2020-07-27 19:47 ` + mm-remove-unnecessary-wrapper-function-do_mmap_pgoff.patch added to -mm tree Andrew Morton
2020-07-27 19:56 ` + nilfs2-only-call-unlock_new_inode-if-i_new.patch " Andrew Morton
2020-07-27 19:57 ` + nilfs2-convert-__nilfs_msg-to-integrate-the-level-and-format.patch " Andrew Morton
2020-07-27 19:57 ` + nilfs2-use-a-more-common-logging-style.patch " Andrew Morton
2020-07-27 19:58 ` + checkpatch-add-test-for-repeated-words.patch " Andrew Morton
2020-07-27 20:05 ` + ocfs2-replace-http-links-with-https-ones.patch " Andrew Morton
2020-07-27 20:09 ` + ocfs2-fix-unbalanced-locking.patch " Andrew Morton
2020-07-27 20:10 ` + kernelh-remove-duplicate-include-of-asm-div64h.patch " Andrew Morton
2020-07-27 20:11 ` + tools-replace-http-links-with-https-ones.patch " Andrew Morton
2020-07-27 20:12 ` + lib-replace-http-links-with-https-ones.patch " Andrew Morton
2020-07-27 20:12 ` + include-replace-http-links-with-https-ones.patch " Andrew Morton
2020-07-27 20:34 ` + mm-make-mm-locked_vm-an-atomic64-counter.patch " Andrew Morton
2020-07-27 20:34 ` + mm-util-account_locked_vm-does-not-hold-mmap_lock.patch " Andrew Morton
2020-07-27 20:37 ` + cg_read_strcmp-fix-null-pointer-dereference.patch " Andrew Morton
2020-07-27 20:51 ` + mm-hugetlb-add-mempolicy-check-in-the-reservation-routine.patch " Andrew Morton
2020-07-27 20:52 ` [withdrawn] checkpatch-support-deprecated-terms-checking.patch removed from " Andrew Morton
2020-07-27 23:47 ` [obsolete] scripts-deprecated_terms-recommend-denylist-allowlist-instead-of-blacklist-whitelist.patch " Andrew Morton
2020-07-27 23:50 ` [obsolete] scripts-deprecated_terms-sync-with-inclusive-terms.patch " Andrew Morton
2020-07-28 0:18 ` [failures] mm-hugetlb-add-mempolicy-check-in-the-reservation-routine.patch " Andrew Morton
2020-07-28 1:19 ` mmotm 2020-07-27-18-18 uploaded Andrew Morton
[not found] ` <ae87385b-f830-dbdf-ebc7-1afb82a7fed0@infradead.org>
2020-07-28 21:55 ` mmotm 2020-07-27-18-18 uploaded (mm/page_alloc.c) Andrew Morton
[not found] ` <20200729082053.6c2fb654@canb.auug.org.au>
2020-07-28 22:31 ` Andrew Morton
[not found] ` <048cef07-ad4b-8788-94a4-e144de731ab6@infradead.org>
2020-07-29 1:44 ` Andrew Morton
2020-07-28 20:53 ` + mm-mempolicy-fix-kerneldoc-of-numa_map_to_online_node.patch added to -mm tree Andrew Morton
2020-07-28 20:53 ` + mm-mmu_notifier-fix-and-extend-kerneldoc.patch " Andrew Morton
2020-07-28 20:54 ` + mm-swap-fix-kerneldoc-of-swap_vma_readahead.patch " Andrew Morton
2020-07-28 20:58 ` + mm-memcontrol-dont-count-limit-setting-reclaim-as-memory-pressure.patch " Andrew Morton
2020-07-28 21:01 ` + mm-memcontrol-restore-proper-dirty-throttling-when-memoryhigh-changes.patch " Andrew Morton
2020-07-28 22:06 ` + mm-compaction-correct-the-comments-of-compact_defer_shift.patch " Andrew Morton
2020-07-28 22:09 ` + selftests-add-mincore-tests.patch " Andrew Morton
2020-07-28 22:16 ` + proc-pid-smaps-consistent-whitespace-output-format.patch " Andrew Morton
2020-07-28 22:21 ` + xtensa-switch-to-generic-version-of-pte-allocation-fix.patch " Andrew Morton
2020-07-28 22:21 ` Andrew Morton
2020-07-29 21:49 ` + mm-slab-avoid-the-use-of-one-element-array-and-use-struct_size-helper.patch " Andrew Morton
2020-07-29 23:52 ` [obsolete] mm-slab-avoid-the-use-of-one-element-array-and-use-struct_size-helper.patch removed from " Andrew Morton
2020-07-31 19:24 ` + kasan-dont-tag-stacks-allocated-with-pagealloc.patch added to " Andrew Morton
2020-07-31 19:24 ` + kasan-arm64-dont-instrument-functions-that-enable-kasan.patch " Andrew Morton
2020-07-31 19:24 ` + kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch " Andrew Morton
2020-07-31 19:24 ` + kasan-adjust-kasan_stack_oob-for-tag-based-mode.patch " Andrew Morton
2020-07-31 20:00 ` [obsolete] mmhwpoison-rework-soft-offline-for-in-use-pages-fix.patch removed from " Andrew Morton
2020-07-31 20:05 ` + mmhwpoison-cleanup-unused-pagehuge-check.patch added to " Andrew Morton
2020-07-31 20:05 ` + mm-hwpoison-remove-recalculating-hpage.patch " Andrew Morton
2020-07-31 20:05 ` + mmmadvise-call-soft_offline_page-without-mf_count_increased.patch " Andrew Morton
2020-07-31 20:05 ` + mmmadvise-refactor-madvise_inject_error.patch " Andrew Morton
2020-07-31 20:05 ` + mmhwpoison-inject-dont-pin-for-hwpoison_filter.patch " Andrew Morton
2020-07-31 20:05 ` + mmhwpoison-un-export-get_hwpoison_page-and-make-it-static.patch " Andrew Morton
2020-07-31 20:05 ` + mmhwpoison-kill-put_hwpoison_page.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-remove-mf_count_increased.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-remove-flag-argument-from-soft-offline-functions.patch " Andrew Morton
2020-07-31 20:06 ` Andrew Morton [this message]
2020-07-31 20:06 ` + mmhwpoison-rework-soft-offline-for-free-pages.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-rework-soft-offline-for-in-use-pages.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-refactor-soft_offline_huge_page-and-__soft_offline_page.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-return-0-if-the-page-is-already-poisoned-in-soft-offline.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-introduce-mf_msg_unsplit_thp.patch " Andrew Morton
2020-07-31 20:06 ` + mmhwpoison-double-check-page-count-in-__get_any_page.patch " Andrew Morton
2020-07-31 20:23 ` + mm-gup-restrict-cma-region-by-using-allocation-scope-api.patch " Andrew Morton
2020-07-31 20:23 ` + mm-hugetlb-make-hugetlb-migration-callback-cma-aware.patch " Andrew Morton
2020-07-31 20:23 ` + mm-gup-use-a-standard-migration-target-allocation-callback.patch " Andrew Morton
2020-07-31 20:25 ` + mm-migrate-make-a-standard-migration-target-allocation-function-fix.patch " Andrew Morton
2020-07-31 20:26 ` + mm-memcontrol-decouple-reference-counting-from-page-accounting-fix.patch " Andrew Morton
2020-07-31 20:32 ` + mm-dmapoolc-add-warn_on-in-dma_pool_destroy.patch " Andrew Morton
2020-07-31 20:49 ` + kstrto-correct-documentation-references-to-simple_strto.patch " Andrew Morton
2020-07-31 20:49 ` + kstrto-do-not-describe-simple_strto-as-obsolete-replaced.patch " Andrew Morton
2020-07-31 20:57 ` + mm-hugetlb-fix-calculation-of-adjust_range_if_pmd_sharing_possible.patch " Andrew Morton
2020-07-31 20:59 ` + poison-remove-obsolete-comment.patch " Andrew Morton
2020-07-31 21:02 ` + cma-dont-quit-at-first-error-when-activating-reserved-areas.patch " Andrew Morton
2020-07-31 21:10 ` [nacked] mm-dmapoolc-add-warn_on-in-dma_pool_destroy.patch removed from " Andrew Morton
2020-07-31 23:46 ` mmotm 2020-07-31-16-45 uploaded Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2020-09-22 17:00 + mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch added to -mm tree akpm
2020-08-07 1:07 akpm
2020-07-03 22:14 incoming Andrew Morton
2020-07-16 21:46 ` + mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch added to -mm tree Andrew Morton
2020-06-24 19:19 akpm
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