tree 1ace006ae24580bcdb8424f46a11e28c7397aa77
parent acc14dc4bd484f1fc8c227dd9fc2a1e592312d2b
author Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> 1452905866 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1452909392 -0800

mm: soft-offline: exit with failure for non anonymous thp

Currently memory_failure() doesn't handle non anonymous thp case,
because we can hardly expect the error handling to be successful, and it
can just hit some corner case which results in BUG_ON or something
severe like that.  This is also the case for soft offline code, so let's
make it in the same way.

Orignal code has a MF_COUNT_INCREASED check before put_hwpoison_page(),
but it's unnecessary because get_any_page() is already called when
running on this code, which takes a refcount of the target page
regardress of the flag.  So this patch also removes it.

[akpm@linux-foundation.org: fix build]
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>