From cc713520bdc1b84fc5394f6ac8649b93ad2c5dde Mon Sep 17 00:00:00 2001 From: Kaixu Xia Date: Fri, 16 Sep 2022 23:20:35 +0800 Subject: mm/damon: return void from damon_set_schemes() There is no point in returning an int from damon_set_schemes(). It always returns 0 which is meaningless for the caller, so change it to return void directly. Link: https://lkml.kernel.org/r/1663341635-12675-1-git-send-email-kaixuxia@tencent.com Signed-off-by: Kaixu Xia Reviewed-by: SeongJae Park Reviewed-by: Muchun Song Signed-off-by: Andrew Morton --- mm/damon/core.c | 5 +---- mm/damon/dbgfs.c | 8 +++----- mm/damon/lru_sort.c | 4 +--- mm/damon/reclaim.c | 4 +--- 4 files changed, 6 insertions(+), 15 deletions(-) (limited to 'mm') diff --git a/mm/damon/core.c b/mm/damon/core.c index a843673c11cf..9c80c6eb00c2 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -454,10 +454,8 @@ int damon_set_attrs(struct damon_ctx *ctx, struct damon_attrs *attrs) * * This function should not be called while the kdamond of the context is * running. - * - * Return: 0 if success, or negative error code otherwise. */ -int damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes, +void damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes, ssize_t nr_schemes) { struct damos *s, *next; @@ -467,7 +465,6 @@ int damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes, damon_destroy_scheme(s); for (i = 0; i < nr_schemes; i++) damon_add_scheme(ctx, schemes[i]); - return 0; } /** diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c index c00eba4448d8..6f0ae7d3ae39 100644 --- a/mm/damon/dbgfs.c +++ b/mm/damon/dbgfs.c @@ -307,11 +307,9 @@ static ssize_t dbgfs_schemes_write(struct file *file, const char __user *buf, goto unlock_out; } - ret = damon_set_schemes(ctx, schemes, nr_schemes); - if (!ret) { - ret = count; - nr_schemes = 0; - } + damon_set_schemes(ctx, schemes, nr_schemes); + ret = count; + nr_schemes = 0; unlock_out: mutex_unlock(&ctx->kdamond_lock); diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index 4a40054ba03b..d7eb72b41cb6 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -203,9 +203,7 @@ static int damon_lru_sort_apply_parameters(void) scheme = damon_lru_sort_new_hot_scheme(hot_thres); if (!scheme) return -ENOMEM; - err = damon_set_schemes(ctx, &scheme, 1); - if (err) - return err; + damon_set_schemes(ctx, &scheme, 1); cold_thres = cold_min_age / damon_lru_sort_mon_attrs.aggr_interval; scheme = damon_lru_sort_new_cold_scheme(cold_thres); diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index 039fa55e0ae9..3d59ab11b7b3 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -155,9 +155,7 @@ static int damon_reclaim_apply_parameters(void) scheme = damon_reclaim_new_scheme(); if (!scheme) return -ENOMEM; - err = damon_set_schemes(ctx, &scheme, 1); - if (err) - return err; + damon_set_schemes(ctx, &scheme, 1); if (monitor_region_start > monitor_region_end) return -EINVAL; -- cgit v1.2.3