From 0121c619d03820d965745e56f80f6eb5994533fe Mon Sep 17 00:00:00 2001
From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 29 Apr 2008 16:11:12 -0700
Subject: [PATCH] slub: Whitespace cleanup and use of strict_strtoul
Fix some issues with wrapping and use strict_strtoul to make parameter
passing from sysfs safer.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---
mm/slub.c | 38 +++++++++++++++++++++++++-------------
1 file changed, 25 insertions(+), 13 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 32b62623846a..c9c12ac79613 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -814,7 +814,8 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search)
return search == NULL;
}
-static void trace(struct kmem_cache *s, struct page *page, void *object, int alloc)
+static void trace(struct kmem_cache *s, struct page *page, void *object,
+ int alloc)
{
if (s->flags & SLAB_TRACE) {
printk(KERN_INFO "TRACE %s %s 0x%p inuse=%d fp=0x%p\n",
@@ -1267,8 +1268,7 @@ static void add_partial(struct kmem_cache_node *n,
spin_unlock(&n->list_lock);
}
-static void remove_partial(struct kmem_cache *s,
- struct page *page)
+static void remove_partial(struct kmem_cache *s, struct page *page)
{
struct kmem_cache_node *n = get_node(s, page_to_nid(page));
@@ -1283,7 +1283,8 @@ static void remove_partial(struct kmem_cache *s,
*
* Must hold list_lock.
*/
-static inline int lock_and_freeze_slab(struct kmem_cache_node *n, struct page *page)
+static inline int lock_and_freeze_slab(struct kmem_cache_node *n,
+ struct page *page)
{
if (slab_trylock(page)) {
list_del(&page->lru);
@@ -1420,8 +1421,8 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
* so that the others get filled first. That way the
* size of the partial list stays small.
*
- * kmem_cache_shrink can reclaim any empty slabs from the
- * partial list.
+ * kmem_cache_shrink can reclaim any empty slabs from
+ * the partial list.
*/
add_partial(n, page, 1);
slab_unlock(page);
@@ -2909,7 +2910,7 @@ static int slab_mem_going_online_callback(void *arg)
return 0;
/*
- * We are bringing a node online. No memory is availabe yet. We must
+ * We are bringing a node online. No memory is available yet. We must
* allocate a kmem_cache_node structure in order to bring the node
* online.
*/
@@ -3812,7 +3813,12 @@ SLAB_ATTR_RO(objs_per_slab);
static ssize_t order_store(struct kmem_cache *s,
const char *buf, size_t length)
{
- int order = simple_strtoul(buf, NULL, 10);
+ unsigned long order;
+ int err;
+
+ err = strict_strtoul(buf, 10, &order);
+ if (err)
+ return err;
if (order > slub_max_order || order < slub_min_order)
return -EINVAL;
@@ -4065,10 +4071,16 @@ static ssize_t remote_node_defrag_ratio_show(struct kmem_cache *s, char *buf)
static ssize_t remote_node_defrag_ratio_store(struct kmem_cache *s,
const char *buf, size_t length)
{
- int n = simple_strtoul(buf, NULL, 10);
+ unsigned long ratio;
+ int err;
+
+ err = strict_strtoul(buf, 10, &ratio);
+ if (err)
+ return err;
+
+ if (ratio < 100)
+ s->remote_node_defrag_ratio = ratio * 10;
- if (n < 100)
- s->remote_node_defrag_ratio = n * 10;
return length;
}
SLAB_ATTR(remote_node_defrag_ratio);
@@ -4425,8 +4437,8 @@ __initcall(slab_sysfs_init);
*/
#ifdef CONFIG_SLABINFO
-ssize_t slabinfo_write(struct file *file, const char __user * buffer,
- size_t count, loff_t *ppos)
+ssize_t slabinfo_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *ppos)
{
return -EINVAL;
}