• Hugh Dickins's avatar
    mm: fix hugepage migration · fd4a4663
    Hugh Dickins authored
    2.6.37 added an unmap_and_move_huge_page() for memory failure recovery,
    but its anon_vma handling was still based around the 2.6.35 conventions.
    Update it to use page_lock_anon_vma, get_anon_vma, page_unlock_anon_vma,
    drop_anon_vma in the same way as we're now changing unmap_and_move().
    
    I don't particularly like to propose this for stable when I've not seen
    its problems in practice nor tested the solution: but it's clearly out of
    synch at present.
    Signed-off-by: default avatarHugh Dickins <hughd@google.com>
    Cc: Mel Gorman <mel@csn.ul.ie>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
    Cc: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: <stable@kernel.org> [2.6.37, 2.6.36]
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    fd4a4663
migrate.c 31.5 KB