numa: fix slab_node(MPOL_BIND)
authorEric Dumazet <eric.dumazet@gmail.com>
Wed, 27 Oct 2010 17:33:43 +0000 (19:33 +0200)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 28 Oct 2010 17:04:30 +0000 (10:04 -0700)
commit800416f799e0723635ac2d720ad4449917a1481c
tree75f18c93accdfd4b5f58ac3172a336607bde508b
parent0851668fdd97e526b2a41f794b785c204dd3d3e0
numa: fix slab_node(MPOL_BIND)

When a node contains only HighMem memory, slab_node(MPOL_BIND)
dereferences a NULL pointer.

[ This code seems to go back all the way to commit 19770b32609b: "mm:
  filter based on a nodemask as well as a gfp_mask".  Which was back in
  April 2008, and it got merged into 2.6.26.  - Linus ]

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/mempolicy.c