diff options
| author |   Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2017-07-10 15:47:32 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-10 16:32:30 -0700 |
| commit | 243abd5b7803d540280f029bc5224a4a2892579a (patch) | |
| tree | fb8d98f216bf4d98993765fefe00cb0eda0110c0 /mm/memory-failure.c | |
| parent | fs/buffer.c: make bh_lru_install() more efficient (diff) | |
| download | linux-dev-243abd5b7803d540280f029bc5224a4a2892579a.tar.xz linux-dev-243abd5b7803d540280f029bc5224a4a2892579a.zip | |
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 <n-horiguchi@ah.jp.nec.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/memory-failure.c | 1 |
1 files changed, 0 insertions, 1 deletions
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 <linux/swap.h> #include <linux/backing-dev.h> #include <linux/migrate.h> -#include <linux/page-isolation.h> #include <linux/suspend.h> #include <linux/slab.h> #include <linux/swapops.h> |