From c4a8e662c839ac0003e4781aa324cb2d68ed9cb1 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Mon, 15 Sep 2025 20:35:08 -0700 Subject: [PATCH] mm/damon/lru_sort: use damon_initialized() DAMON_LRU_SORT is assuming DAMON is ready to use in module_init time, and uses its own hack to see if it is the time. Use damon_initialized(), which is a way for seeing if DAMON is ready to be used that is more reliable and better to maintain instead of the hack. Link: https://lkml.kernel.org/r/20250916033511.116366-5-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- mm/damon/lru_sort.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index ab6173a646bd6..42b9a656f9ded 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -345,7 +345,7 @@ static int damon_lru_sort_enabled_store(const char *val, return 0; /* Called before init function. The function will handle this. */ - if (!ctx) + if (!damon_initialized()) goto set_param_out; err = damon_lru_sort_turn(enable); @@ -368,8 +368,13 @@ MODULE_PARM_DESC(enabled, static int __init damon_lru_sort_init(void) { - int err = damon_modules_new_paddr_ctx_target(&ctx, &target); + int err; + if (!damon_initialized()) { + err = -ENOMEM; + goto out; + } + err = damon_modules_new_paddr_ctx_target(&ctx, &target); if (err) goto out; -- 2.47.3