tree 5cdf936bf6996e379784e0b75b982a364f437368
parent 57fc4a5ee322cde96c33f101d3c2d3b79011c05c
author Minchan Kim <minchan.kim@gmail.com> 1296604353 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1296691398 -0800

mm/migration: fix page corruption during hugepage migration

If migrate_huge_page by memory-failure fails , it calls put_page in itself
to decrease page reference and caller of migrate_huge_page also calls
putback_lru_pages.  It can do double free of page so it can make page
corruption on page holder.

In addtion, clean of pages on caller is consistent behavior with
migrate_pages by cf608ac19c ("mm: compaction: fix COMPACTPAGEFAILED
counting").

Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>