diff options
| author | Chen Yucong <slaoub@gmail.com> | 2014-05-22 11:54:15 -0700 |
|---|---|---|
| committer | Show Liu <show.liu@linaro.org> | 2014-06-18 12:04:31 +0800 |
| commit | 94744d28d73d19965f1431c56be2a7b7f0346d18 (patch) | |
| tree | 6868490bdbd626b9f38686db8722a7247e24fb00 /tools | |
| parent | 1892f1eec24cc5ab3aebb7c22acd29415e4bbdc4 (diff) | |
hwpoison, hugetlb: lock_page/unlock_page does not match for handling a free hugepage
commit b985194c8c0a130ed155b71662e39f7eaea4876f upstream.
For handling a free hugepage in memory failure, the race will happen if
another thread hwpoisoned this hugepage concurrently. So we need to
check PageHWPoison instead of !PageHWPoison.
If hwpoison_filter(p) returns true or a race happens, then we need to
unlock_page(hpage).
Signed-off-by: Chen Yucong <slaoub@gmail.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Tested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions