diff options
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index f2cd830f66c0..c6e4dd3e1c08 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -781,16 +781,16 @@ static struct page_state { { compound, compound, "huge", me_huge_page }, #endif - { sc|dirty, sc|dirty, "swapcache", me_swapcache_dirty }, - { sc|dirty, sc, "swapcache", me_swapcache_clean }, + { sc|dirty, sc|dirty, "dirty swapcache", me_swapcache_dirty }, + { sc|dirty, sc, "clean swapcache", me_swapcache_clean }, - { unevict|dirty, unevict|dirty, "unevictable LRU", me_pagecache_dirty}, - { unevict, unevict, "unevictable LRU", me_pagecache_clean}, + { unevict|dirty, unevict|dirty, "dirty unevictable LRU", me_pagecache_dirty }, + { unevict, unevict, "clean unevictable LRU", me_pagecache_clean }, - { mlock|dirty, mlock|dirty, "mlocked LRU", me_pagecache_dirty }, - { mlock, mlock, "mlocked LRU", me_pagecache_clean }, + { mlock|dirty, mlock|dirty, "dirty mlocked LRU", me_pagecache_dirty }, + { mlock, mlock, "clean mlocked LRU", me_pagecache_clean }, - { lru|dirty, lru|dirty, "LRU", me_pagecache_dirty }, + { lru|dirty, lru|dirty, "dirty LRU", me_pagecache_dirty }, { lru|dirty, lru, "clean LRU", me_pagecache_clean }, /* @@ -812,14 +812,14 @@ static struct page_state { #undef slab #undef reserved +/* + * "Dirty/Clean" indication is not 100% accurate due to the possibility of + * setting PG_dirty outside page lock. See also comment above set_page_dirty(). + */ static void action_result(unsigned long pfn, char *msg, int result) { - struct page *page = pfn_to_page(pfn); - - printk(KERN_ERR "MCE %#lx: %s%s page recovery: %s\n", - pfn, - PageDirty(page) ? "dirty " : "", - msg, action_name[result]); + pr_err("MCE %#lx: %s page recovery: %s\n", + pfn, msg, action_name[result]); } static int page_action(struct page_state *ps, struct page *p, @@ -1385,7 +1385,7 @@ static int get_any_page(struct page *p, unsigned long pfn, int flags) * Isolate the page, so that it doesn't get reallocated if it * was free. */ - set_migratetype_isolate(p); + set_migratetype_isolate(p, true); /* * When the target page is a free hugepage, just remove it * from free hugepage list. @@ -1476,9 +1476,17 @@ int soft_offline_page(struct page *page, int flags) { int ret; unsigned long pfn = page_to_pfn(page); + struct page *hpage = compound_trans_head(page); if (PageHuge(page)) return soft_offline_huge_page(page, flags); + if (PageTransHuge(hpage)) { + if (PageAnon(hpage) && unlikely(split_huge_page(hpage))) { + pr_info("soft offline: %#lx: failed to split THP\n", + pfn); + return -EBUSY; + } + } ret = get_any_page(page, pfn, flags); if (ret < 0) |