[nacked] mm-debug-optimize-once-judgment-with-clang.patch removed from -mm tree

[nacked] mm-debug-optimize-once-judgment-with-clang.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/debug: optimize once judgment with clang
has been removed from the -mm tree.  Its filename was
     mm-debug-optimize-once-judgment-with-clang.patch

This patch was dropped because it was nacked

------------------------------------------------------
From: Xie Yuanbin <qq570070308@gmail.com>
Subject: mm/debug: optimize once judgment with clang
Date: Mon, 9 Mar 2026 23:34:05 +0800

commit 242b872239f6a7deacbc ("include/linux/once_lite.h: fix judgment in
WARN_ONCE with clang") helps optimize performance and size under the clang
compiler, but the modification is not complete.

Port the modification to VM_WARN_ON_ONCE_PAGE(), VM_WARN_ON_ONCE_FOLIO(),
VM_WARN_ON_ONCE_MM() and VM_WARN_ON_ONCE_VMA().

Link: https://lkml.kernel.org/r/20260309153405.20130-1-qq570070308@gmail.com
Signed-off-by: Xie Yuanbin <qq570070308@gmail.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: David Laight <david.laight.linux@gmail.com>
Cc: Bill Wendling <morbo@google.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/mmdebug.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/include/linux/mmdebug.h~mm-debug-optimize-once-judgment-with-clang
+++ a/include/linux/mmdebug.h
@@ -60,7 +60,7 @@ void vma_iter_dump_tree(const struct vma
 	static bool __section(".data..once") __warned;			\
 	int __ret_warn_once = !!(cond);					\
 									\
-	if (unlikely(__ret_warn_once && !__warned)) {			\
+	if (unlikely(__ret_warn_once) && unlikely(!__warned)) {		\
 		dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\
 		__warned = true;					\
 		WARN_ON(1);						\
@@ -80,7 +80,7 @@ void vma_iter_dump_tree(const struct vma
 	static bool __section(".data..once") __warned;			\
 	int __ret_warn_once = !!(cond);					\
 									\
-	if (unlikely(__ret_warn_once && !__warned)) {			\
+	if (unlikely(__ret_warn_once) && unlikely(!__warned)) {		\
 		dump_page(&folio->page, "VM_WARN_ON_ONCE_FOLIO(" __stringify(cond)")");\
 		__warned = true;					\
 		WARN_ON(1);						\
@@ -91,7 +91,7 @@ void vma_iter_dump_tree(const struct vma
 	static bool __section(".data..once") __warned;			\
 	int __ret_warn_once = !!(cond);					\
 									\
-	if (unlikely(__ret_warn_once && !__warned)) {			\
+	if (unlikely(__ret_warn_once) && unlikely(!__warned)) {		\
 		dump_mm(mm);						\
 		__warned = true;					\
 		WARN_ON(1);						\
@@ -102,7 +102,7 @@ void vma_iter_dump_tree(const struct vma
 	static bool __section(".data..once") __warned;			\
 	int __ret_warn_once = !!(cond);					\
 									\
-	if (unlikely(__ret_warn_once && !__warned)) {			\
+	if (unlikely(__ret_warn_once) && unlikely(!__warned)) {		\
 		dump_vma(vma);						\
 		__warned = true;					\
 		WARN_ON(1);						\
_

Patches currently in -mm which might be from qq570070308@gmail.com are

mm-optimize-the-implementation-of-warn_on_once_gfp.patch