Commit a234bdc9 authored by Pekka Enberg's avatar Pekka Enberg

slab: document kzfree() zeroing behavior

As suggested by Alan Cox, document the fact that kzfree() can zero out a great
deal more memory than the what the user requested from kmalloc().

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
parent 59a3759d
......@@ -166,6 +166,10 @@ 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)
{
......
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