From 243abd5b7803d540280f029bc5224a4a2892579a Mon Sep 17 00:00:00 2001 From: Naoya Horiguchi Date: Mon, 10 Jul 2017 15:47:32 -0700 Subject: mm: hugetlb: prevent reuse of hwpoisoned free hugepages Patch series "mm: hwpoison: fixlet for hugetlb migration". This patchset updates the hwpoison/hugetlb code to address 2 reported issues. One is madvise(MADV_HWPOISON) failure reported by Intel's lkp robot (see http://lkml.kernel.org/r/20170417055948.GM31394@yexl-desktop.) First half was already fixed in mainline, and another half about hugetlb cases are solved in this series. Another issue is "narrow-down error affected region into a single 4kB page instead of a whole hugetlb page" issue, which was tried by Anshuman (http://lkml.kernel.org/r/20170420110627.12307-1-khandual@linux.vnet.ibm.com) and I updated it to apply it more widely. This patch (of 9): We no longer use MIGRATE_ISOLATE to prevent reuse of hwpoison hugepages as we did before. So current dequeue_huge_page_node() doesn't work as intended because it still uses is_migrate_isolate_page() for this check. This patch fixes it with PageHWPoison flag. Link: http://lkml.kernel.org/r/1496305019-5493-2-git-send-email-n-horiguchi@ah.jp.nec.com Signed-off-by: Naoya Horiguchi Cc: Michal Hocko Cc: "Aneesh Kumar K.V" Cc: Anshuman Khandual Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory-failure.c | 1 - 1 file changed, 1 deletion(-) (limited to 'mm/memory-failure.c') diff --git a/mm/memory-failure.c b/mm/memory-failure.c index dbe3e50c9aa5..e3bf6432ed25 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -49,7 +49,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3-58-ga151