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authorChristoph Lameter <clameter@sgi.com>2006-06-30 04:55:37 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 14:25:35 -0400
commit34aa1330f9b3c5783d269851d467326525207422 (patch)
treea47db4fa53527ea937dee9e763267ab21865ce11 /include/linux/mmzone.h
parentf3dbd34460ff54962d3e3244b6bcb7f5295356e6 (diff)
[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/mmzone.h')
-rw-r--r--include/linux/mmzone.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 4833abd4458b..839e9a04fd49 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -178,12 +178,6 @@ struct zone {
178 178
179 /* Zone statistics */ 179 /* Zone statistics */
180 atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; 180 atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
181 /*
182 * timestamp (in jiffies) of the last zone reclaim that did not
183 * result in freeing of pages. This is used to avoid repeated scans
184 * if all memory in the zone is in use.
185 */
186 unsigned long last_unsuccessful_zone_reclaim;
187 181
188 /* 182 /*
189 * prev_priority holds the scanning priority for this zone. It is 183 * prev_priority holds the scanning priority for this zone. It is