diff options
| -rw-r--r-- | mm/memory-failure.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index fee648b9d39..473f15a3356 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -942,6 +942,7 @@ int __memory_failure(unsigned long pfn, int trapno, int flags) struct page *p; struct page *hpage; int res; + unsigned int nr_pages; if (!sysctl_memory_failure_recovery) panic("Memory failure from trap %d on page %lx", trapno, pfn); @@ -960,7 +961,8 @@ int __memory_failure(unsigned long pfn, int trapno, int flags) return 0; } - atomic_long_add(1, &mce_bad_pages); + nr_pages = 1 << compound_order(hpage); + atomic_long_add(nr_pages, &mce_bad_pages); /* * We need/can do nothing about count=0 pages. @@ -1024,7 +1026,7 @@ int __memory_failure(unsigned long pfn, int trapno, int flags) } if (hwpoison_filter(p)) { if (TestClearPageHWPoison(p)) - atomic_long_dec(&mce_bad_pages); + atomic_long_sub(nr_pages, &mce_bad_pages); unlock_page(hpage); put_page(hpage); return 0; @@ -1123,6 +1125,7 @@ int unpoison_memory(unsigned long pfn) struct page *page; struct page *p; int freeit = 0; + unsigned int nr_pages; if (!pfn_valid(pfn)) return -ENXIO; @@ -1135,9 +1138,11 @@ int unpoison_memory(unsigned long pfn) return 0; } + nr_pages = 1 << compound_order(page); + if (!get_page_unless_zero(page)) { if (TestClearPageHWPoison(p)) - atomic_long_dec(&mce_bad_pages); + atomic_long_sub(nr_pages, &mce_bad_pages); pr_debug("MCE: Software-unpoisoned free page %#lx\n", pfn); return 0; } @@ -1149,9 +1154,9 @@ int unpoison_memory(unsigned long pfn) * the PG_hwpoison page will be caught and isolated on the entrance to * the free buddy page pool. */ - if (TestClearPageHWPoison(p)) { + if (TestClearPageHWPoison(page)) { pr_debug("MCE: Software-unpoisoned page %#lx\n", pfn); - atomic_long_dec(&mce_bad_pages); + atomic_long_sub(nr_pages, &mce_bad_pages); freeit = 1; } if (PageHuge(p)) |