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authorCyrill Gorcunov <gorcunov@openvz.org>2009-06-16 15:32:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:39 -0700
commit5c87eada68fe5d29a5f67528f81b6e45124f579b (patch)
tree11088d75bd2132fecf70e402d4334686461aba7c
parentaf166777cf451f0373b952ce6766dc1c25385686 (diff)
mm: setup_per_zone_inactive_ratio - do not call for int_sqrt if not needed
int_sqrt() returns 0 if its argument is zero so call it if only needed. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/page_alloc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e5b8f628d16..db8c46ffa9f 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4471,8 +4471,9 @@ static void setup_per_zone_inactive_ratio(void)
/* Zone size in gigabytes */
gb = zone->present_pages >> (30 - PAGE_SHIFT);
- ratio = int_sqrt(10 * gb);
- if (!ratio)
+ if (gb)
+ ratio = int_sqrt(10 * gb);
+ else
ratio = 1;
zone->inactive_ratio = ratio;