Documentation: adopt new coding style of type-aware kmalloc-family

Update the documentation to reflect new type-aware kmalloc-family as
suggested in commit 2932ba8d9c99 ("slab: Introduce kmalloc_obj()
and family")

ptr = kmalloc(sizeof(*ptr), gfp);
 -> ptr = kmalloc_obj(*ptr, gfp);
ptr = kmalloc(sizeof(struct some_obj_name), gfp);
 -> ptr = kmalloc_obj(*ptr, gfp);
ptr = kzalloc(sizeof(*ptr), gfp);
 -> ptr = kzalloc_obj(*ptr, gfp);
ptr = kmalloc_array(count, sizeof(*ptr), gfp);
 -> ptr = kmalloc_objs(*ptr, count, gfp);
ptr = kcalloc(count, sizeof(*ptr), gfp);
 -> ptr = kzalloc_objs(*ptr, count, gfp);

Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260429071445.309733-2-manuelebner@mailbox.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/Documentation/kernel-hacking/locking.rst b/Documentation/kernel-hacking/locking.rst
index dff0646a717b..c969c76ef7cb 100644
--- a/Documentation/kernel-hacking/locking.rst
+++ b/Documentation/kernel-hacking/locking.rst
@@ -442,7 +442,7 @@ to protect the cache and all the objects within it. Here's the code::
     {
             struct object *obj;
 
-            if ((obj = kmalloc(sizeof(*obj), GFP_KERNEL)) == NULL)
+            if ((obj = kmalloc_obj(*obj)) == NULL)
                     return -ENOMEM;
 
             strscpy(obj->name, name, sizeof(obj->name));
@@ -517,7 +517,7 @@ which are taken away, and the ``+`` are lines which are added.
              struct object *obj;
     +        unsigned long flags;
 
-             if ((obj = kmalloc(sizeof(*obj), GFP_KERNEL)) == NULL)
+             if ((obj = kmalloc_obj(*obj)) == NULL)
                      return -ENOMEM;
     @@ -63,30 +64,33 @@
              obj->id = id;