From 4268509a36a79a6e449a4937d88bb4d21f8b2078 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Jan 2019 16:21:09 +0100 Subject: [PATCH] zsmalloc: no need to check return value of debugfs_create functions When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Minchan Kim Cc: Nitin Gupta Cc: Sergey Senozhatsky Cc: linux-mm@kvack.org Signed-off-by: Greg Kroah-Hartman --- mm/zsmalloc.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 0787d33b80d8..1347d7922ea2 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -575,8 +575,6 @@ static void __init zs_stat_init(void) } zs_stat_root = debugfs_create_dir("zsmalloc", NULL); - if (!zs_stat_root) - pr_warn("debugfs 'zsmalloc' stat dir creation failed\n"); } static void __exit zs_stat_exit(void) @@ -654,22 +652,10 @@ static void zs_pool_stat_create(struct zs_pool *pool, const char *name) return; } - entry = debugfs_create_dir(name, zs_stat_root); - if (!entry) { - pr_warn("debugfs dir <%s> creation failed\n", name); - return; - } - pool->stat_dentry = entry; + pool->stat_dentry = debugfs_create_dir(name, zs_stat_root); - entry = debugfs_create_file("classes", S_IFREG | 0444, - pool->stat_dentry, pool, - &zs_stats_size_fops); - if (!entry) { - pr_warn("%s: debugfs file entry <%s> creation failed\n", - name, "classes"); - debugfs_remove_recursive(pool->stat_dentry); - pool->stat_dentry = NULL; - } + debugfs_create_file("classes", S_IFREG | 0444, pool->stat_dentry, pool, + &zs_stats_size_fops); } static void zs_pool_stat_destroy(struct zs_pool *pool)