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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2013-09-11 23:22:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 00:58:08 +0200 |
| commit | 0d6fdbdb2a651f0c9bb979e1d92b1e15dadffc4f (patch) | |
| tree | 821dd8299770976d4d4d049bb527a2c85d6e730e /mm/memory-failure.c | |
| parent | mm: correct the comment about the value for buddy _mapcount (diff) | |
| download | linux-0d6fdbdb2a651f0c9bb979e1d92b1e15dadffc4f.tar.xz linux-0d6fdbdb2a651f0c9bb979e1d92b1e15dadffc4f.zip | |
hwpoison: always unset MIGRATE_ISOLATE before returning from soft_offline_page()
Soft offline code expects that MIGRATE_ISOLATE is set on the target page
only during soft offlining work. But currenly it doesn't work as expected
when get_any_page() fails and returns negative value. In the result, end
users can have unexpectedly isolated pages. This patch just fixes it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e05ed31c0f61..c8cc57ed7dcd 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1553,7 +1553,7 @@ int soft_offline_page(struct page *page, int flags) ret = get_any_page(page, pfn, flags); if (ret < 0) - return ret; + goto unset; if (ret) { /* for in-use pages */ if (PageHuge(page)) ret = soft_offline_huge_page(page, flags); @@ -1570,6 +1570,7 @@ int soft_offline_page(struct page *page, int flags) atomic_long_inc(&num_poisoned_pages); } } +unset: unset_migratetype_isolate(page, MIGRATE_MOVABLE); return ret; } |