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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2013-09-11 14:22:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:58:08 -0700
commit0d6fdbdb2a651f0c9bb979e1d92b1e15dadffc4f (patch)
tree821dd8299770976d4d4d049bb527a2c85d6e730e /mm
parentcf6fe945389e674130dc7564392930cf7fb9f5e8 (diff)
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')
-rw-r--r--mm/memory-failure.c3
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;
}