NFSv4: Rename the state reclaimer thread

[safe/jmp/linux-2.6] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index c26d4c3..a2cd47d 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
 #include <linux/slab.h>
+#include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/cpu.h>
 #include <linux/cpuset.h>
@@ -1329,7 +1330,7 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
                n = get_node(s, zone_to_nid(zone));
 
                if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
-                               n->nr_partial > MIN_PARTIAL) {
+                               n->nr_partial > n->min_partial) {
                        page = get_partial_node(n);
                        if (page)
                                return page;
@@ -1381,7 +1382,7 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
                slab_unlock(page);
        } else {
                stat(c, DEACTIVATE_EMPTY);
-               if (n->nr_partial < MIN_PARTIAL) {
+               if (n->nr_partial < n->min_partial) {
                        /*
                         * Adding an empty slab to the partial slabs in order
                         * to avoid page allocator overhead. This slab needs
@@ -1913,13 +1914,26 @@ static void init_kmem_cache_cpu(struct kmem_cache *s,
 #endif
 }
 
-static void init_kmem_cache_node(struct kmem_cache_node *n)
+static void
+init_kmem_cache_node(struct kmem_cache_node *n, struct kmem_cache *s)
 {
        n->nr_partial = 0;
+
+       /*
+        * The larger the object size is, the more pages we want on the partial
+        * list to avoid pounding the page allocator excessively.
+        */
+       n->min_partial = ilog2(s->size);
+       if (n->min_partial < MIN_PARTIAL)
+               n->min_partial = MIN_PARTIAL;
+       else if (n->min_partial > MAX_PARTIAL)
+               n->min_partial = MAX_PARTIAL;
+
        spin_lock_init(&n->list_lock);
        INIT_LIST_HEAD(&n->partial);
 #ifdef CONFIG_SLUB_DEBUG
        atomic_long_set(&n->nr_slabs, 0);
+       atomic_long_set(&n->total_objects, 0);
        INIT_LIST_HEAD(&n->full);
 #endif
 }
@@ -2087,7 +2101,7 @@ static struct kmem_cache_node *early_kmem_cache_node_alloc(gfp_t gfpflags,
        init_object(kmalloc_caches, n, 1);
        init_tracking(kmalloc_caches, n);
 #endif
-       init_kmem_cache_node(n);
+       init_kmem_cache_node(n, kmalloc_caches);
        inc_slabs_node(kmalloc_caches, node, page->objects);
 
        /*
@@ -2144,7 +2158,7 @@ static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)
 
                }
                s->node[node] = n;
-               init_kmem_cache_node(n);
+               init_kmem_cache_node(n, s);
        }
        return 1;
 }
@@ -2155,7 +2169,7 @@ static void free_kmem_cache_nodes(struct kmem_cache *s)
 
 static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)
 {
-       init_kmem_cache_node(&s->local_node);
+       init_kmem_cache_node(&s->local_node, s);
        return 1;
 }
 #endif
@@ -2300,7 +2314,7 @@ static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags,
 
        s->refcount = 1;
 #ifdef CONFIG_NUMA
-       s->remote_node_defrag_ratio = 100;
+       s->remote_node_defrag_ratio = 1000;
 #endif
        if (!init_kmem_cache_nodes(s, gfpflags & ~SLUB_DMA))
                goto error;
@@ -2889,7 +2903,7 @@ static int slab_mem_going_online_callback(void *arg)
                        ret = -ENOMEM;
                        goto out;
                }
-               init_kmem_cache_node(n);
+               init_kmem_cache_node(n, s);
                s->node[nid] = n;
        }
 out:
@@ -2917,8 +2931,10 @@ static int slab_memory_callback(struct notifier_block *self,
        case MEM_CANCEL_OFFLINE:
                break;
        }
-
-       ret = notifier_from_errno(ret);
+       if (ret)
+               ret = notifier_from_errno(ret);
+       else
+               ret = NOTIFY_OK;
        return ret;
 }
 
@@ -3581,7 +3597,7 @@ static int list_locations(struct kmem_cache *s, char *buf,
        for (i = 0; i < t.count; i++) {
                struct location *l = &t.loc[i];
 
-               if (len > PAGE_SIZE - 100)
+               if (len > PAGE_SIZE - KSYM_SYMBOL_LEN - 100)
                        break;
                len += sprintf(buf + len, "%7ld ", l->count);
 
@@ -4046,7 +4062,7 @@ static ssize_t remote_node_defrag_ratio_store(struct kmem_cache *s,
        if (err)
                return err;
 
-       if (ratio < 100)
+       if (ratio <= 100)
                s->remote_node_defrag_ratio = ratio * 10;
 
        return length;
@@ -4404,14 +4420,6 @@ __initcall(slab_sysfs_init);
  * The /proc/slabinfo ABI
  */
 #ifdef CONFIG_SLABINFO
-
-ssize_t slabinfo_write(struct file *file, const char __user *buffer,
-                      size_t count, loff_t *ppos)
-{
-       return -EINVAL;
-}
-
-
 static void print_slabinfo_header(struct seq_file *m)
 {
        seq_puts(m, "slabinfo - version: 2.1\n");
@@ -4479,11 +4487,29 @@ static int s_show(struct seq_file *m, void *p)
        return 0;
 }
 
-const struct seq_operations slabinfo_op = {
+static const struct seq_operations slabinfo_op = {
        .start = s_start,
        .next = s_next,
        .stop = s_stop,
        .show = s_show,
 };
 
+static int slabinfo_open(struct inode *inode, struct file *file)
+{
+       return seq_open(file, &slabinfo_op);
+}
+
+static const struct file_operations proc_slabinfo_operations = {
+       .open           = slabinfo_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = seq_release,
+};
+
+static int __init slab_proc_init(void)
+{
+       proc_create("slabinfo",S_IWUSR|S_IRUGO,NULL,&proc_slabinfo_operations);
+       return 0;
+}
+module_init(slab_proc_init);
 #endif /* CONFIG_SLABINFO */