From 306550f0a5817d271361aa010fd245a4b43af725 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Thu, 15 Jan 2026 07:20:43 -0800 Subject: [PATCH] mm/damon/lru_sort: use damon_kdamond_pid() DAMON_LRU_SORT directly uses damon_ctx->kdamond field with manual synchronization using damon_ctx->kdamond_lock, to get the pid of the kdamond. Use a new dedicated function for the purpose, namely damon_kdamond_pid(), since that doesn't require manual and error-prone synchronization. Link: https://lkml.kernel.org/r/20260115152047.68415-4-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- mm/damon/lru_sort.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index 8296f984b4280..bedb9134d2861 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -405,7 +405,9 @@ static int damon_lru_sort_turn(bool on) err = damon_start(&ctx, 1, true); if (err) return err; - kdamond_pid = ctx->kdamond->pid; + kdamond_pid = damon_kdamond_pid(ctx); + if (kdamond_pid < 0) + return kdamond_pid; return damon_call(ctx, &call_control); } -- 2.47.3