[PATCH] zoned vm counters: conversion of nr_slab to per zone counter
- Allows reclaim to access counter without looping over processor counts.
- Allows accurate statistics on how many pages are used in a zone by
the slab. This may become useful to balance slab allocations over
various zones.
[akpm@osdl.org: bugfix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 0960846..d694243 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1362,7 +1362,7 @@
for_each_zone(zone)
lru_pages += zone->nr_active + zone->nr_inactive;
- nr_slab = read_page_state(nr_slab);
+ nr_slab = global_page_state(NR_SLAB);
/* If slab caches are huge, it's better to hit them first */
while (nr_slab >= lru_pages) {
reclaim_state.reclaimed_slab = 0;