The patch titled
mm: setup_per_zone_inactive_ratio - do not call for int_sqrt if not needed
has been added to the -mm tree. Its filename is
mm-setup_per_zone_inactive_ratio-do-not-call-for-int_sqrt-if-not-needed.patch
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------------------------------------------------------
Subject: mm: setup_per_zone_inactive_ratio - do not call for int_sqrt if not needed
From: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
int_sqrt() returns 0 if its argument is zero so call it if only needed.
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN mm/page_alloc.c~mm-setup_per_zone_inactive_ratio-do-not-call-for-int_sqrt-if-not-needed mm/page_alloc.c
--- a/mm/page_alloc.c~mm-setup_per_zone_inactive_ratio-do-not-call-for-int_sqrt-if-not-needed
+++ a/mm/page_alloc.c
@@ -4547,8 +4547,9 @@ static void setup_per_zone_inactive_rati
/* 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;
_
Patches currently in -mm which might be from gorcunov@xxxxxxxxxx are
linux-next.patch
mm-setup_per_zone_inactive_ratio-do-not-call-for-int_sqrt-if-not-needed.patch
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