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| author | Christoph Lameter <clameter@sgi.com> | 2007-10-16 01:25:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:42:58 -0700 |
| commit | 37c0708dbee5825df3bd9ce6ef2199c6c1713970 (patch) | |
| tree | 747551aa58484e7f872da118b864c8f3ca6e892d | |
| parent | 56bbd65df0e92a4a8eb70c5f2b416ae2b6c5fb31 (diff) | |
| download | kernel_samsung_smdk4412-37c0708dbee5825df3bd9ce6ef2199c6c1713970.zip kernel_samsung_smdk4412-37c0708dbee5825df3bd9ce6ef2199c6c1713970.tar.gz kernel_samsung_smdk4412-37c0708dbee5825df3bd9ce6ef2199c6c1713970.tar.bz2 | |
Memoryless nodes: Add N_CPU node state
We need the check for a node with cpu in zone reclaim. Zone reclaim will not
allow remote zone reclaim if a node has a cpu.
[Lee.Schermerhorn@hp.com: Move setup of N_CPU node state mask]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Tested-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Bob Picco <bob.picco@hp.com>
Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@skynet.ie>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/nodemask.h | 1 | ||||
| -rw-r--r-- | mm/page_alloc.c | 5 | ||||
| -rw-r--r-- | mm/vmscan.c | 4 |
3 files changed, 6 insertions, 4 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index ccee962..905e18f 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -349,6 +349,7 @@ enum node_states { #else N_HIGH_MEMORY = N_NORMAL_MEMORY, #endif + N_CPU, /* The node has one or more cpus */ NR_NODE_STATES }; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 07dfd89..161bcb7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2353,6 +2353,9 @@ static struct per_cpu_pageset boot_pageset[NR_CPUS]; static int __cpuinit process_zones(int cpu) { struct zone *zone, *dzone; + int node = cpu_to_node(cpu); + + node_set_state(node, N_CPU); /* this node has a cpu */ for_each_zone(zone) { @@ -2360,7 +2363,7 @@ static int __cpuinit process_zones(int cpu) continue; zone_pcp(zone, cpu) = kmalloc_node(sizeof(struct per_cpu_pageset), - GFP_KERNEL, cpu_to_node(cpu)); + GFP_KERNEL, node); if (!zone_pcp(zone, cpu)) goto bad; diff --git a/mm/vmscan.c b/mm/vmscan.c index 8765688..8fd8ba1 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1853,7 +1853,6 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) { - cpumask_t mask; int node_id; /* @@ -1890,8 +1889,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) * as wide as possible. */ node_id = zone_to_nid(zone); - mask = node_to_cpumask(node_id); - if (!cpus_empty(mask) && node_id != numa_node_id()) + if (node_state(node_id, N_CPU) && node_id != numa_node_id()) return 0; return __zone_reclaim(zone, gfp_mask, order); } |