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author | Naoya Horiguchi | 2017-07-11 00:47:32 +0200 |
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committer | Linus Torvalds | 2017-07-11 01:32:30 +0200 |
commit | 243abd5b7803d540280f029bc5224a4a2892579a (patch) | |
tree | fb8d98f216bf4d98993765fefe00cb0eda0110c0 /mm/filemap.c | |
parent | fs/buffer.c: make bh_lru_install() more efficient (diff) | |
download | kernel-qcow2-linux-243abd5b7803d540280f029bc5224a4a2892579a.tar.gz kernel-qcow2-linux-243abd5b7803d540280f029bc5224a4a2892579a.tar.xz kernel-qcow2-linux-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 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions