diff options
| author |   Christoph Lameter <clameter@engr.sgi.com> | 2006-02-01 03:05:26 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:14 -0800 |
| commit | 42c722d4cb4022e56ff200f3f5a58c0dfd7edac6 (patch) | |
| tree | a954fe12587951c01c61c0fc1ad2219a74adbbcb /mm | |
| parent | [PATCH] Optimize off-node performance of zone reclaim (diff) | |
| download | linux-dev-42c722d4cb4022e56ff200f3f5a58c0dfd7edac6.tar.xz linux-dev-42c722d4cb4022e56ff200f3f5a58c0dfd7edac6.zip | |
[PATCH] zone_reclaim: reclaim on memory only node support
Zone reclaim is usually only run on the local node. Headless nodes do not
have any local processors. This patch checks for headless nodes and
performs zone reclaim on them.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 465bfa54dfd6..0ca6007d655b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1599,17 +1599,23 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) struct task_struct *p = current; struct reclaim_state reclaim_state; struct scan_control sc; + cpumask_t mask; + int node_id; if (time_before(jiffies, zone->last_unsuccessful_zone_reclaim + ZONE_RECLAIM_INTERVAL)) return 0; if (!(gfp_mask & __GFP_WAIT) || - zone->zone_pgdat->node_id != numa_node_id() || zone->all_unreclaimable || atomic_read(&zone->reclaim_in_progress) > 0) return 0; + node_id = zone->zone_pgdat->node_id; + mask = node_to_cpumask(node_id); + if (!cpus_empty(mask) && node_id != numa_node_id()) + return 0; + sc.may_writepage = 0; sc.may_swap = 0; sc.nr_scanned = 0; |