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authorChristoph Lameter <clameter@sgi.com>2006-06-30 01:55:37 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 11:25:35 -0700
commit34aa1330f9b3c5783d269851d467326525207422 (patch)
treea47db4fa53527ea937dee9e763267ab21865ce11 /include/linux/swap.h
parentf3dbd34460ff54962d3e3244b6bcb7f5295356e6 (diff)
downloadop-kernel-dev-34aa1330f9b3c5783d269851d467326525207422.zip
op-kernel-dev-34aa1330f9b3c5783d269851d467326525207422.tar.gz
[PATCH] zoned vm counters: zone_reclaim: remove /proc/sys/vm/zone_reclaim_interval
The zone_reclaim_interval was necessary because we were not able to determine how many unmapped pages exist in a zone. Therefore we had to scan in intervals to figure out if any pages were unmapped. With the zoned counters and NR_ANON_PAGES we now know the number of pagecache pages and the number of mapped pages in a zone. So we can simply skip the reclaim if there is an insufficient number of unmapped pages. We use SWAP_CLUSTER_MAX as the boundary. Drop all support for /proc/sys/vm/zone_reclaim_interval. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index c41e2d6..cf6ca6e 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -189,7 +189,6 @@ extern long vm_total_pages;
#ifdef CONFIG_NUMA
extern int zone_reclaim_mode;
-extern int zone_reclaim_interval;
extern int zone_reclaim(struct zone *, gfp_t, unsigned int);
#else
#define zone_reclaim_mode 0
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