tree 1dcf2ff93784716143b7acef816888a71a9504c2
parent 1f2b69f9bdce8461341e5fb864568a2ee90079c8
author Christoph Lameter <clameter@engr.sgi.com> 1173083433 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1173110271 -0800

[PATCH] Page migration: Fix vma flag checking

Currently we do not check for vma flags if sys_move_pages is called to move
individual pages.  If sys_migrate_pages is called to move pages then we
check for vm_flags that indicate a non migratable vma but that still
includes VM_LOCKED and we can migrate mlocked pages.

Extract the vma_migratable check from mm/mempolicy.c, fix it and put it
into migrate.h so that is can be used from both locations.

Problem was spotted by Lee Schermerhorn

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>