diff options
| author | Christoph Lameter <clameter@sgi.com> | 2006-06-30 01:55:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-30 11:25:35 -0700 |
| commit | 34aa1330f9b3c5783d269851d467326525207422 (patch) | |
| tree | a47db4fa53527ea937dee9e763267ab21865ce11 /include | |
| parent | f3dbd34460ff54962d3e3244b6bcb7f5295356e6 (diff) | |
| download | lwn-34aa1330f9b3c5783d269851d467326525207422.tar.gz lwn-34aa1330f9b3c5783d269851d467326525207422.zip | |
[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')
| -rw-r--r-- | include/linux/mmzone.h | 6 | ||||
| -rw-r--r-- | include/linux/swap.h | 1 |
2 files changed, 0 insertions, 7 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 { /* Zone statistics */ atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; - /* - * timestamp (in jiffies) of the last zone reclaim that did not - * result in freeing of pages. This is used to avoid repeated scans - * if all memory in the zone is in use. - */ - unsigned long last_unsuccessful_zone_reclaim; /* * prev_priority holds the scanning priority for this zone. It is diff --git a/include/linux/swap.h b/include/linux/swap.h index c41e2d6d1acc..cf6ca6e377bd 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 |