The patch titled
Subject: fork: use __vmalloc_node() for stack allocation
has been added to the -mm mm-unstable branch. Its filename is
fork-use-__vmalloc_node-for-stack-allocation.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fork-use-__vmalloc_node-for-stack-allocation.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: fork: use __vmalloc_node() for stack allocation
Date: Mon, 17 Mar 2025 17:36:14 +0100
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@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/fork.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/kernel/fork.c~fork-use-__vmalloc_node-for-stack-allocation
+++ a/kernel/fork.c
@@ -311,11 +311,9 @@ static int alloc_thread_stack_node(struc
* 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;
_
Patches currently in -mm which might be from urezki@xxxxxxxxx are
fork-use-__vmalloc_node-for-stack-allocation.patch
