---

yaml --- r: 131578 b: refs/heads/master c: 3ef0e5b h: refs/heads/master v: v3
git-mirror · Feb 21, 2009 · fd21c91 · fd21c91
1 parent e81a3c7
commit fd21c91
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Showing 3 changed files with 22 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d9190913b71831f5e3d04de62cfb1fd069a9db35
+refs/heads/master: 3ef0e5ba467366125f04b423f4638baca54a4fc1
diff --git a/trunk/include/linux/slab.h b/trunk/include/linux/slab.h
@@ -127,6 +127,7 @@ int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr);
 void * __must_check __krealloc(const void *, size_t, gfp_t);
 void * __must_check krealloc(const void *, size_t, gfp_t);
 void kfree(const void *);
+void kzfree(const void *);
 size_t ksize(const void *);
 
 /*

diff --git a/trunk/mm/util.c b/trunk/mm/util.c
@@ -129,6 +129,26 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags)
 }
 EXPORT_SYMBOL(krealloc);
 
+/**
+ * kzfree - like kfree but zero memory
+ * @p: object to free memory of
+ *
+ * The memory of the object @p points to is zeroed before freed.
+ * If @p is %NULL, kzfree() does nothing.
+ */
+void kzfree(const void *p)
+{
+	size_t ks;
+	void *mem = (void *)p;
+
+	if (unlikely(ZERO_OR_NULL_PTR(mem)))
+		return;
+	ks = ksize(mem);
+	memset(mem, 0, ks);
+	kfree(mem);
+}
+EXPORT_SYMBOL(kzfree);
+
 /*
  * strndup_user - duplicate an existing string from user space
  * @s: The string to duplicate