From ea0e5f5786807ded4f0be8d195aa380e5d90f303 Mon Sep 17 00:00:00 2001
From: SJ Park <sj@kernel.org>
Date: Tue, 30 Jun 2026 07:17:24 -0700
Subject: [PATCH] mm/damon/sysfs: split out filters setup function

damon_sysfs_set_probe() is doing not only probe setup but also filters
setup.  Split out filters setup for readability.

Link: https://lore.kernel.org/20260630141726.92246-11-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/damon/sysfs.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 02afd37b04df..5b2ae2fe948f 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1909,16 +1909,11 @@ static int damon_sysfs_set_attrs(struct damon_ctx *ctx,
 	return damon_set_attrs(ctx, &attrs);
 }
 
-static int damon_sysfs_set_probe(struct damon_probe *probe,
-		struct damon_sysfs_probe *sys_probe)
+static int damon_sysfs_set_filters(struct damon_probe *probe,
+		struct damon_sysfs_filters *sys_filters)
 {
-	struct damon_sysfs_filters *sys_filters;
 	int i;
 
-	sys_filters = sys_probe->filters;
-	if (!sys_filters)
-		return 0;
-
 	for (i = 0; i < sys_filters->nr; i++) {
 		struct damon_sysfs_filter *sys_filter =
 			sys_filters->filters_arr[i];
@@ -1945,6 +1940,17 @@ static int damon_sysfs_set_probe(struct damon_probe *probe,
 	return 0;
 }
 
+static int damon_sysfs_set_probe(struct damon_probe *probe,
+		struct damon_sysfs_probe *sys_probe)
+{
+	struct damon_sysfs_filters *sys_filters;
+
+	sys_filters = sys_probe->filters;
+	if (!sys_filters)
+		return 0;
+	return damon_sysfs_set_filters(probe, sys_filters);
+}
+
 static int damon_sysfs_set_probes(struct damon_ctx *ctx,
 		struct damon_sysfs_probes *sys_probes)
 {