From: Bijan Tabatabai <bijantabatab@micron.com>
Date: Wed, 9 Jul 2025 00:47:29 +0000 (-0500)
Subject: mm/damon/core: commit damos->target_nid
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=579bd5006fe7f4a7abb32da0160d376476cab67d;p=thirdparty%2Flinux.git

mm/damon/core: commit damos->target_nid

When committing new scheme parameters from the sysfs, the target_nid field
of the damos struct would not be copied.  This would result in the
target_nid field to retain its original value, despite being updated in
the sysfs interface.

This patch fixes this issue by copying target_nid in damos_commit().

Link: https://lkml.kernel.org/r/20250709004729.17252-1-bijan311@gmail.com
Fixes: 83dc7bbaecae ("mm/damon/sysfs: use damon_commit_ctx()")
Signed-off-by: Bijan Tabatabai <bijantabatab@micron.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ravi Shankar Jonnalagadda <ravis.opensrc@micron.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/damon/core.c b/mm/damon/core.c
index c66583869e95c..04e01e08253a3 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -978,6 +978,7 @@ static int damos_commit(struct damos *dst, struct damos *src)
 		return err;
 
 	dst->wmarks = src->wmarks;
+	dst->target_nid = src->target_nid;
 
 	err = damos_commit_filters(dst, src);
 	return err;