Merge branches 'slab/documentation', 'slab/fixes', 'slob/cleanups' and 'slub/fixes...

[linux-drm-fsl-dcu.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index d5d2213728c51725fb658b5e20225cb429d93015..7c35ad95f92756d1473bbc2ae658f5bb27de2ca9 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -168,6 +168,10 @@ EXPORT_SYMBOL(krealloc);
  *
  * The memory of the object @p points to is zeroed before freed.
  * If @p is %NULL, kzfree() does nothing.
+ *
+ * Note: this function zeroes the whole allocated buffer which can be a good
+ * deal bigger than the requested buffer size passed to kmalloc(). So be
+ * careful when using this function in performance sensitive code.
  */
 void kzfree(const void *p)
 {