fork: use __vmalloc_node() for stack allocation

Replace __vmalloc_node_range() by __vmalloc_node().  The last variant
requires less parameters and it uses exactly the same arguments which are
partly now hidden inside __vmalloc_node().

This change does not change any functionality.  It makes the code a bit
simpler.

Link: https://lkml.kernel.org/r/20250317163614.166502-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: urezki

kernel/fork.c

@@ -311,11 +311,9 @@ static int alloc_thread_stack_node(struct task_struct *tsk, int node)
 	 * so memcg accounting is performed manually on assigning/releasing
 	 * stacks to tasks. Drop __GFP_ACCOUNT.
 	 */
-	stack = __vmalloc_node_range(THREAD_SIZE, THREAD_ALIGN,
-				     VMALLOC_START, VMALLOC_END,
+	stack = __vmalloc_node(THREAD_SIZE, THREAD_ALIGN,
 				     THREADINFO_GFP & ~__GFP_ACCOUNT,
-				     PAGE_KERNEL,
-				     0, node, __builtin_return_address(0));
+				     node, __builtin_return_address(0));
 	if (!stack)
 		return -ENOMEM;