hugetlb: factor init_nodemask_of_node()
Factor init_nodemask_of_node() out of the nodemask_of_node() macro.
This will be used to populate the huge pages "nodes_allowed" nodemask for
a single node when basing nodes_allowed on a preferred/local mempolicy or
when a persistent huge page pool page count is modified via a per node
sysfs attribute.
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Andi Kleen <andi@firstfloor.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Eric Whitney <eric.whitney@hp.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index ca9b489..cbd521a 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -245,14 +245,19 @@
return min_t(int,MAX_NUMNODES,find_next_bit(srcp->bits, MAX_NUMNODES, n+1));
}
+static inline void init_nodemask_of_node(nodemask_t *mask, int node)
+{
+ nodes_clear(*mask);
+ node_set(node, *mask);
+}
+
#define nodemask_of_node(node) \
({ \
typeof(_unused_nodemask_arg_) m; \
if (sizeof(m) == sizeof(unsigned long)) { \
- m.bits[0] = 1UL<<(node); \
+ m.bits[0] = 1UL << (node); \
} else { \
- nodes_clear(m); \
- node_set((node), m); \
+ init_nodemask_of_node(&m, (node)); \
} \
m; \
})