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/locking/locktypes.rst b/Documentation/locking/locktypes.rst
index 37b6a5670c2f..ac1ad722a9e7 100644
--- a/Documentation/locking/locktypes.rst
+++ b/Documentation/locking/locktypes.rst
@@ -498,7 +498,7 @@ allocating memory.  Thus, on a non-PREEMPT_RT kernel the following code
 works perfectly::
 
   raw_spin_lock(&lock);
-  p = kmalloc(sizeof(*p), GFP_ATOMIC);
+  p = kmalloc_obj(*p, GFP_ATOMIC);
 
 But this code fails on PREEMPT_RT kernels because the memory allocator is
 fully preemptible and therefore cannot be invoked from truly atomic
@@ -507,7 +507,7 @@ while holding normal non-raw spinlocks because they do not disable
 preemption on PREEMPT_RT kernels::
 
   spin_lock(&lock);
-  p = kmalloc(sizeof(*p), GFP_ATOMIC);
+  p = kmalloc_obj(*p, GFP_ATOMIC);
 
 
 bit spinlocks