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author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2010-05-28 09:29:18 +0900 |
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committer | Andi Kleen <ak@linux.intel.com> | 2010-08-11 09:22:12 +0200 |
commit | 7013febc8940960eaaba039bac0f80910f679ce1 (patch) | |
tree | 27a61a69ae8c1df5149ba9ac98cc573e8bf19b95 /mm/hugetlb.c | |
parent | 7af446a841a264a1a9675001005b29ce01d1fc57 (diff) | |
download | op-kernel-dev-7013febc8940960eaaba039bac0f80910f679ce1.zip op-kernel-dev-7013febc8940960eaaba039bac0f80910f679ce1.tar.gz |
HWPOISON, hugetlb: set/clear PG_hwpoison bits on hugepage
To avoid race condition between concurrent memory errors on identified
hugepage, we atomically test and set PG_hwpoison bit on the head page.
All pages in the error hugepage are considered as hwpoisoned
for now, so set and clear all PG_hwpoison bits in the hugepage
with page lock of the head page held.
Dependency:
"HWPOISON, hugetlb: enable error handling path for hugepage"
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/hugetlb.c')
0 files changed, 0 insertions, 0 deletions