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authorSeth, Rohit <rohit.seth@intel.com>2005-10-29 18:15:48 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:35 -0700
commite46a5e28c201f703c18b47b108bfddec44f897c4 (patch)
treeb55f5c376533f2ecfedc8fed0d12a590bfb1387e
parentba56e91c940146e99ac694c4c7cd7f2b4aaa565d (diff)
[PATCH] mm: set per-cpu-pages lower threshold to zero
Set the low water mark for hot pages in pcp to zero. (akpm: for the life of me I cannot remember why we created pcp->low. Neither can Martin and the changelog is silent. Maybe it was just a brainfart, but I have this feeling that there was a reason. If not, we should remove the fields completely. We'll see.) Signed-off-by: Rohit Seth <rohit.seth@intel.com> Cc: <linux-mm@kvack.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/page_alloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f799217dc2f..60663232fbb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1755,7 +1755,7 @@ inline void setup_pageset(struct per_cpu_pageset *p, unsigned long batch)
pcp = &p->pcp[0]; /* hot */
pcp->count = 0;
- pcp->low = 2 * batch;
+ pcp->low = 0;
pcp->high = 6 * batch;
pcp->batch = max(1UL, 1 * batch);
INIT_LIST_HEAD(&pcp->list);
@@ -1764,7 +1764,7 @@ inline void setup_pageset(struct per_cpu_pageset *p, unsigned long batch)
pcp->count = 0;
pcp->low = 0;
pcp->high = 2 * batch;
- pcp->batch = max(1UL, 1 * batch);
+ pcp->batch = max(1UL, batch/2);
INIT_LIST_HEAD(&pcp->list);
}