+ mm-damon-paddr-initialize-folio-variables-to-null-for-clarity.patch added to mm-new branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/damon/paddr: initialize 'folio' variables to NULL for clarity
has been added to the -mm mm-new branch.  Its filename is
     mm-damon-paddr-initialize-folio-variables-to-null-for-clarity.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-paddr-initialize-folio-variables-to-null-for-clarity.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: Aaron Yang <yangqixiao@inspur.com>
Subject: mm/damon/paddr: initialize 'folio' variables to NULL for clarity
Date: Wed, 7 Jan 2026 17:30:38 -0800

In damon_pa_mark_accessed_or_deactivate(), damon_pa_pageout(),
damon_pa_migrate(), and damon_pa_stat(), the local variable 'folio' is
declared but not initialized.

Initialize 'folio' to NULL to improve code readability and
maintainability.

Link: https://patch.msgid.link/20260104013255.16962-1-yangqixiao@inspur.com
Link: https://lkml.kernel.org/r/20260108013041.80601-1-sj@kernel.org
Signed-off-by: Aaron Yang <yangqixiao@inspur.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/paddr.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/damon/paddr.c~mm-damon-paddr-initialize-folio-variables-to-null-for-clarity
+++ a/mm/damon/paddr.c
@@ -156,7 +156,7 @@ static unsigned long damon_pa_pageout(st
 	LIST_HEAD(folio_list);
 	bool install_young_filter = true;
 	struct damos_filter *filter;
-	struct folio *folio;
+	struct folio *folio = NULL;
 
 	/* check access in page level again by default */
 	damos_for_each_ops_filter(filter, s) {
@@ -212,7 +212,7 @@ static inline unsigned long damon_pa_mar
 		unsigned long *sz_filter_passed)
 {
 	phys_addr_t addr, applied = 0;
-	struct folio *folio;
+	struct folio *folio = NULL;
 
 	addr = damon_pa_phys_addr(r->ar.start, addr_unit);
 	while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) {
@@ -262,7 +262,7 @@ static unsigned long damon_pa_migrate(st
 {
 	phys_addr_t addr, applied;
 	LIST_HEAD(folio_list);
-	struct folio *folio;
+	struct folio *folio = NULL;
 
 	addr = damon_pa_phys_addr(r->ar.start, addr_unit);
 	while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) {
@@ -295,7 +295,7 @@ static unsigned long damon_pa_stat(struc
 		unsigned long *sz_filter_passed)
 {
 	phys_addr_t addr;
-	struct folio *folio;
+	struct folio *folio = NULL;
 
 	if (!damos_ops_has_filter(s))
 		return 0;
_

Patches currently in -mm which might be from yangqixiao@inspur.com are

mm-damon-paddr-initialize-folio-variables-to-null-for-clarity.patch