tree 0f4d6ec0924004f7fd924b2f248d9256af0807aa
parent 0bf073315cb29d2e9e68b6c5da97862a519e3320
author Cyrill Gorcunov <gorcunov@openvz.org> 1401923202 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1401926036 -0700

mm: softdirty: don't forget to save file map softdiry bit on unmap

pte_file_mksoft_dirty operates with argument passed by a value and
returns modified result thus we need to assign @ptfile here, otherwise
itis a no-op which may lead to loss of the softdirty bit.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>