mm: 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.

Link: http://lkml.kernel.org/r/20190122152151.16139-14-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Laura Abbott <labbott@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 11 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 83b30edc2f7f..36b56f858f0f 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -2121,21 +2121,14 @@ static int __init extfrag_debug_init(void)
         struct dentry *extfrag_debug_root;
 
         extfrag_debug_root = debugfs_create_dir("extfrag", NULL);
-        if (!extfrag_debug_root)
-                return -ENOMEM;
 
-        if (!debugfs_create_file("unusable_index", 0444,
-                        extfrag_debug_root, NULL, &unusable_file_ops))
-                goto fail;
+        debugfs_create_file("unusable_index", 0444, extfrag_debug_root, NULL,
+                            &unusable_file_ops);
 
-        if (!debugfs_create_file("extfrag_index", 0444,
-                        extfrag_debug_root, NULL, &extfrag_file_ops))
-                goto fail;
+        debugfs_create_file("extfrag_index", 0444, extfrag_debug_root, NULL,
+                            &extfrag_file_ops);
 
         return 0;
-fail:
-        debugfs_remove_recursive(extfrag_debug_root);
-        return -ENOMEM;
 }
 
 module_init(extfrag_debug_init);