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authorLee Schermerhorn <lee.schermerhorn@hp.com>2009-12-14 17:58:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:12 -0800
commitc1e6c8d074ea3621106548654cc244d2edc12ead (patch)
tree0b16357dc7d15ba8f1c4d9d295873b9528b5d397 /include/linux/nodemask.h
parent6ae11b278bca1cd41651bae49a8c69de2f6a6262 (diff)
downloadop-kernel-dev-c1e6c8d074ea3621106548654cc244d2edc12ead.zip
op-kernel-dev-c1e6c8d074ea3621106548654cc244d2edc12ead.tar.gz
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>
Diffstat (limited to 'include/linux/nodemask.h')
-rw-r--r--include/linux/nodemask.h11
1 files changed, 8 insertions, 3 deletions
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 @@ static inline int __next_node(int n, const nodemask_t *srcp)
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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