[PATCH] mm: slab.c: fix kernel-doc warning for __ksize()

[Randy Dunlap <rdunlap@xxxxxxxxxxxxx>]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix kernel-doc warning in mm/slab.c:

../mm/slab.c:4215: warning: Function parameter or member 'objp' not described in '__ksize'

Also add Return: documentation section for this function.

Fixes: 10d1f8cb3965 ("mm/slab: refactor common ksize KASAN logic into slab_common.c")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
 mm/slab.c |    3 +++
 1 file changed, 3 insertions(+)

--- linux-next-20191008.orig/mm/slab.c
+++ linux-next-20191008/mm/slab.c
@@ -4207,9 +4207,12 @@ void __check_heap_object(const void *ptr
 
 /**
  * __ksize -- Uninstrumented ksize.
+ * @objp: pointer to the object
  *
  * Unlike ksize(), __ksize() is uninstrumented, and does not provide the same
  * safety checks as ksize() with KASAN instrumentation enabled.
+ *
+ * Return: size of the actual memory used by @objp in bytes
  */
 size_t __ksize(const void *objp)
 {