The patch titled
Subject: mm: use numa_mem_id() in alloc_pages_node()
has been added to the -mm tree. Its filename is
mm-use-numa_mem_id-in-alloc_pages_node.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-use-numa_mem_id-in-alloc_pages_node.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-numa_mem_id-in-alloc_pages_node.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: 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@xxxxxxxxx>
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/gfp.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN include/linux/gfp.h~mm-use-numa_mem_id-in-alloc_pages_node include/linux/gfp.h
--- a/include/linux/gfp.h~mm-use-numa_mem_id-in-alloc_pages_node
+++ a/include/linux/gfp.h
@@ -318,13 +318,14 @@ __alloc_pages_node(int nid, gfp_t gfp_ma
/*
* 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);
}
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
mm-page_isolation-remove-bogus-tests-for-isolated-pages.patch
mm-page_isolation-remove-bogus-tests-for-isolated-pages-fix.patch
mm-rename-and-move-get-set_freepage_migratetype.patch
mm-rename-and-move-get-set_freepage_migratetype-v2.patch
mm-compaction-more-robust-check-for-scanners-meeting.patch
mm-compaction-simplify-handling-restart-position-in-free-pages-scanner.patch
mm-compaction-encapsulate-resetting-cached-scanner-positions.patch
mm-compaction-always-skip-compound-pages-by-order-in-migrate-scanner.patch
mm-compaction-skip-compound-pages-by-order-in-free-scanner.patch
mm-rename-alloc_pages_exact_node-to-__alloc_pages_node.patch
mm-unify-checks-in-alloc_pages_node-and-__alloc_pages_node.patch
mm-use-numa_mem_id-in-alloc_pages_node.patch
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