diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2015-09-09 01:03:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-09 01:35:28 +0300 |
| commit | 82c1fc714763b823169958a98196d9be56c63b30 (patch) | |
| tree | 270b7eb14f7a6b14fe1afd17b3f41ecabe09f26f | |
| parent | 0bc35a970c01c50e3bcc4b5a612787346024e5db (diff) | |
| download | linux-82c1fc714763b823169958a98196d9be56c63b30.tar.xz | |
mm: use numa_mem_id() in alloc_pages_node()
alloc_pages_node() might fail when called with NUMA_NO_NODE and
__GFP_THISNODE on a CPU belonging to a memoryless node. To make the
local-node fallback more robust and prevent such situations, use
numa_mem_id(), which was introduced for similar scenarios in the slab
context.
Suggested-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/gfp.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 4a12cae2fb0c..f92cbd2f4450 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -318,13 +318,14 @@ __alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order) /* * Allocate pages, preferring the node given as nid. When nid == NUMA_NO_NODE, - * prefer the current CPU's node. Otherwise node must be valid and online. + * prefer the current CPU's closest node. Otherwise node must be valid and + * online. */ static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order) { if (nid == NUMA_NO_NODE) - nid = numa_node_id(); + nid = numa_mem_id(); return __alloc_pages_node(nid, gfp_mask, order); } |