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| author | Chen Yucong <slaoub@gmail.com> | 2014-05-22 22:54:15 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-23 20:37:29 +0400 |
| commit | b985194c8c0a130ed155b71662e39f7eaea4876f (patch) | |
| tree | 8fd7a95f8da83ddbc0c12d919cd86a2c64f74489 /mm/filemap.c | |
| parent | 4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff) | |
| download | linux-b985194c8c0a130ed155b71662e39f7eaea4876f.tar.xz | |
hwpoison, hugetlb: lock_page/unlock_page does not match for handling a free hugepage
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>
Cc: <stable@vger.kernel.org> [2.6.36+]
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