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| author | Yisheng Xie <xieyisheng1@huawei.com> | 2017-02-24 14:57:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-24 17:46:55 -0800 |
| commit | 85fbe5d1b50cf6f83b4123ca28d6fab84275824c (patch) | |
| tree | 9a119801eab302aebee188d6666b189d2fb0a200 /mm/memory-failure.c | |
| parent | cbae0170e5329c79c0a36a81fedd2800146aca12 (diff) | |
| download | linux-85fbe5d1b50cf6f83b4123ca28d6fab84275824c.tar.bz2 | |
HWPOISON: soft offlining for non-lru movable page
Extend soft offlining framework to support non-lru page, which already
support migration after commit bda807d44454 ("mm: migrate: support
non-lru movable page migration")
When memory corrected errors occur on a non-lru movable page, we can
choose to stop using it by migrating data onto another page and disable
the original (maybe half-broken) one.
Link: http://lkml.kernel.org/r/1485867981-16037-4-git-send-email-ysxie@foxmail.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Suggested-by: Michal Hocko <mhocko@kernel.org>
Suggested-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index f283c7e0a2a3..3d0f2fd4bf73 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1527,7 +1527,8 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags) { int ret = __get_any_page(page, pfn, flags); - if (ret == 1 && !PageHuge(page) && !PageLRU(page)) { + if (ret == 1 && !PageHuge(page) && + !PageLRU(page) && !__PageMovable(page)) { /* * Try to free it. */ @@ -1649,7 +1650,10 @@ static int __soft_offline_page(struct page *page, int flags) * Try to migrate to a new page instead. migrate.c * handles a large number of cases for us. */ - ret = isolate_lru_page(page); + if (PageLRU(page)) + ret = isolate_lru_page(page); + else + ret = isolate_movable_page(page, ISOLATE_UNEVICTABLE); /* * Drop page reference which is came from get_any_page() * successful isolate_lru_page() already took another one. @@ -1657,18 +1661,20 @@ static int __soft_offline_page(struct page *page, int flags) put_hwpoison_page(page); if (!ret) { LIST_HEAD(pagelist); - inc_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); + /* + * After isolated lru page, the PageLRU will be cleared, + * so use !__PageMovable instead for LRU page's mapping + * cannot have PAGE_MAPPING_MOVABLE. + */ + if (!__PageMovable(page)) + inc_node_page_state(page, NR_ISOLATED_ANON + + page_is_file_cache(page)); list_add(&page->lru, &pagelist); ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL, MIGRATE_SYNC, MR_MEMORY_FAILURE); if (ret) { - if (!list_empty(&pagelist)) { - list_del(&page->lru); - dec_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); - putback_lru_page(page); - } + if (!list_empty(&pagelist)) + putback_movable_pages(&pagelist); pr_info("soft offline: %#lx: migration failed %d, type %lx\n", pfn, ret, page->flags); |