[PATCH 4/12] 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@xxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Reviewed-by: Andi Kleen <andi@xxxxxxxxxxxxxx>
---
Against: 2.6.31-mmotm-090925-1435
New in V5 of series
V6: + rename 'init_nodemask_of_nodes()' to 'init_nodemask_of_node()'
+ redefine init_nodemask_of_node() as static inline fcn
+ move this patch back 1 in series
V8: + factor 'init_nodemask_of_node()' from nodemask_of_node()
+ drop alloc_nodemask_of_node() -- not used any more
V9: + remove extra parens around arguments now that init_nodemask_of_node
is not longer a macro.
V10: REALLY remove the extra parentheses. Duh!
include/linux/nodemask.h | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
Index: linux-2.6.31-mmotm-090925-1435/include/linux/nodemask.h
===================================================================
--- linux-2.6.31-mmotm-090925-1435.orig/include/linux/nodemask.h 2009-10-07 12:31:53.000000000 -0400
+++ linux-2.6.31-mmotm-090925-1435/include/linux/nodemask.h 2009-10-07 12:31:58.000000000 -0400
@@ -245,14 +245,19 @@ static inline int __next_node(int n, con
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; \
})
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