X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=mm%2Fvmscan.c;h=06e72693b4587a6181b002dec4f14ac5a7d4ba06;hb=58984ce21d315b70df1a43644df7416ea7c9bfd8;hp=b15dcbb9e1743c630167531bf54b95829a223d6b;hpb=d979677c4c02f0a72db5a03ecd8184bd9d6695c8;p=safe%2Fjmp%2Flinux-2.6

diff --git a/mm/vmscan.c b/mm/vmscan.c
index b15dcbb..06e7269 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -78,6 +78,12 @@ struct scan_control {
 	/* Which cgroup do we reclaim from */
 	struct mem_cgroup *mem_cgroup;
 
+	/*
+	 * Nodemask of nodes allowed by the caller. If NULL, all nodes
+	 * are scanned.
+	 */
+	nodemask_t	*nodemask;
+
 	/* Pluggable isolate pages callback */
 	unsigned long (*isolate_pages)(unsigned long nr, struct list_head *dst,
 			unsigned long *scanned, int order, int mode,
@@ -214,8 +220,9 @@ unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask,
 		do_div(delta, lru_pages + 1);
 		shrinker->nr += delta;
 		if (shrinker->nr < 0) {
-			printk(KERN_ERR "%s: nr=%ld\n",
-					__func__, shrinker->nr);
+			printk(KERN_ERR "shrink_slab: %pF negative objects to "
+			       "delete nr=%ld\n",
+			       shrinker->shrink, shrinker->nr);
 			shrinker->nr = max_pass;
 		}
 
@@ -1298,17 +1305,11 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
 	}
 	__mod_zone_page_state(zone, NR_LRU_BASE + lru, pgmoved);
 	pgdeactivate += pgmoved;
-	if (buffer_heads_over_limit) {
-		spin_unlock_irq(&zone->lru_lock);
-		pagevec_strip(&pvec);
-		spin_lock_irq(&zone->lru_lock);
-	}
 	__count_zone_vm_events(PGREFILL, zone, pgscanned);
 	__count_vm_events(PGDEACTIVATE, pgdeactivate);
 	spin_unlock_irq(&zone->lru_lock);
-	if (vm_swap_full())
-		pagevec_swap_free(&pvec);
-
+	if (buffer_heads_over_limit)
+		pagevec_strip(&pvec);
 	pagevec_release(&pvec);
 }
 
@@ -1543,7 +1544,8 @@ static void shrink_zones(int priority, struct zonelist *zonelist,
 	struct zone *zone;
 
 	sc->all_unreclaimable = 1;
-	for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
+	for_each_zone_zonelist_nodemask(zone, z, zonelist, high_zoneidx,
+					sc->nodemask) {
 		if (!populated_zone(zone))
 			continue;
 		/*
@@ -1688,7 +1690,7 @@ out:
 }
 
 unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
-								gfp_t gfp_mask)
+				gfp_t gfp_mask, nodemask_t *nodemask)
 {
 	struct scan_control sc = {
 		.gfp_mask = gfp_mask,
@@ -1699,6 +1701,7 @@ unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
 		.order = order,
 		.mem_cgroup = NULL,
 		.isolate_pages = isolate_pages_global,
+		.nodemask = nodemask,
 	};
 
 	return do_try_to_free_pages(zonelist, &sc);
@@ -1719,6 +1722,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
 		.order = 0,
 		.mem_cgroup = mem_cont,
 		.isolate_pages = mem_cgroup_isolate_pages,
+		.nodemask = NULL, /* we don't care the placement */
 	};
 	struct zonelist *zonelist;
 
@@ -2109,7 +2113,6 @@ unsigned long shrink_all_memory(unsigned long nr_pages)
 	struct scan_control sc = {
 		.gfp_mask = GFP_KERNEL,
 		.may_unmap = 0,
-		.swap_cluster_max = nr_pages,
 		.may_writepage = 1,
 		.isolate_pages = isolate_pages_global,
 	};
@@ -2151,6 +2154,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages)
 			unsigned long nr_to_scan = nr_pages - sc.nr_reclaimed;
 
 			sc.nr_scanned = 0;
+			sc.swap_cluster_max = nr_to_scan;
 			shrink_all_zones(nr_to_scan, prio, pass, &sc);
 			if (sc.nr_reclaimed >= nr_pages)
 				goto out;
@@ -2295,6 +2299,7 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
 					SWAP_CLUSTER_MAX),
 		.gfp_mask = gfp_mask,
 		.swappiness = vm_swappiness,
+		.order = order,
 		.isolate_pages = isolate_pages_global,
 	};
 	unsigned long slab_reclaimable;