Thread (37 messages) 37 messages, 7 authors, 2012-08-16

Re: [PATCH v2] mm: Restructure kmem_cache_create() to move debug cache integrity checks into a new function

From: Christoph Lameter (Open Source) <hidden>
Date: 2012-08-09 14:20:53
Also in: lkml

On Mon, 6 Aug 2012, Shuah Khan wrote:
+#ifdef CONFIG_DEBUG_VM
+static int kmem_cache_sanity_check(const char *name, size_t size)
Why do we pass "size" in? AFAICT there is no need to.
quoted hunk ↗ jump to hunk
@@ -53,48 +93,17 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align
 {
 	struct kmem_cache *s = NULL;

-#ifdef CONFIG_DEBUG_VM
 	if (!name || in_interrupt() || size < sizeof(void *) ||
 		size > KMALLOC_MAX_SIZE) {
-		printk(KERN_ERR "kmem_cache_create(%s) integrity check"
-			" failed\n", name);
+		pr_err("kmem_cache_create(%s) integrity check failed\n", name);
 		goto out;
 	}
-#endif
If you move the above code into the sanity check function then you will be
using the size as well. These are also sanity checks after all.

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