diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index ad6723e9d110a9053c454e6aa3d0717364f9c587..b55f28fbe831a914cb0d0b0a2b0deb336516c3e6 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -191,8 +191,6 @@ static int __init cma_debugfs_init(void)
int i;
cma_debugfs_root = debugfs_create_dir("cma", NULL);
- if (!cma_debugfs_root)
- return -ENOMEM;
for (i = 0; i < cma_area_count; i++)
cma_debugfs_add_one(&cma_areas[i], i);
diff --git a/mm/failslab.c b/mm/failslab.c
index b135ebb88b6f729e145430999591beb3db2371d2..ec5aad211c5be978332dd59682f9536cb2f54f74 100644
--- a/mm/failslab.c
+++ b/mm/failslab.c
@@ -48,18 +48,12 @@ static int __init failslab_debugfs_init(void)
if (IS_ERR(dir))
return PTR_ERR(dir);
- if (!debugfs_create_bool("ignore-gfp-wait", mode, dir,
- &failslab.ignore_gfp_reclaim))
- goto fail;
- if (!debugfs_create_bool("cache-filter", mode, dir,
- &failslab.cache_filter))
- goto fail;
+ debugfs_create_bool("ignore-gfp-wait", mode, dir,
+ &failslab.ignore_gfp_reclaim);
+ debugfs_create_bool("cache-filter", mode, dir,
+ &failslab.cache_filter);
return 0;
-fail:
- debugfs_remove_recursive(dir);
-
- return -ENOMEM;
}
late_initcall(failslab_debugfs_init);
diff --git a/mm/gup_benchmark.c b/mm/gup_benchmark.c
index 5b42d3d4b60aa3a921002abf8f2872bc6e0764f8..6c0279e70cc479221adaf69142993c3e54557235 100644
--- a/mm/gup_benchmark.c
+++ b/mm/gup_benchmark.c
@@ -122,12 +122,8 @@ static const struct file_operations gup_benchmark_fops = {
static int gup_benchmark_init(void)
{
- void *ret;
-
- ret = debugfs_create_file_unsafe("gup_benchmark", 0600, NULL, NULL,
- &gup_benchmark_fops);
- if (!ret)
- pr_warn("Failed to create gup_benchmark in debugfs");
+ debugfs_create_file_unsafe("gup_benchmark", 0600, NULL, NULL,
+ &gup_benchmark_fops);
return 0;
}
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index d066f7ca1ee8c7f7582ebcc1cd46c8f21e9c9206..af07527cd971d4eba9cf0f1d457e4306e703d269 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2887,12 +2887,8 @@ DEFINE_SIMPLE_ATTRIBUTE(split_huge_pages_fops, NULL, split_huge_pages_set,
static int __init split_huge_pages_debugfs(void)
{
- void *ret;
-
- ret = debugfs_create_file("split_huge_pages", 0200, NULL, NULL,
- &split_huge_pages_fops);
- if (!ret)
- pr_warn("Failed to create split_huge_pages in debugfs");
+ debugfs_create_file("split_huge_pages", 0200, NULL, NULL,
+ &split_huge_pages_fops);
return 0;
}
late_initcall(split_huge_pages_debugfs);
diff --git a/mm/memblock.c b/mm/memblock.c
index ea31045ba70423d128575ab7e9e182a40bea425f..470601115892740fad5e687a35c929d5a43ea97f 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2005,8 +2005,7 @@ DEFINE_SHOW_ATTRIBUTE(memblock_debug);
static int __init memblock_init_debugfs(void)
{
struct dentry *root = debugfs_create_dir("memblock", NULL);
- if (!root)
- return -ENXIO;
+
debugfs_create_file("memory", 0444, root,
&memblock.memory, &memblock_debug_fops);
debugfs_create_file("reserved", 0444, root,
diff --git a/mm/memory.c b/mm/memory.c
index 79e0173a7d70ea325531716a3804a0ab09a3a70c..6aff43171a7bef751babc14f9a519b993f2ff575 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3334,12 +3334,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(fault_around_bytes_fops,
static int __init fault_around_debugfs(void)
{
- void *ret;
-
- ret = debugfs_create_file_unsafe("fault_around_bytes", 0644, NULL, NULL,
- &fault_around_bytes_fops);
- if (!ret)
- pr_warn("Failed to create fault_around_bytes in debugfs");
+ debugfs_create_file_unsafe("fault_around_bytes", 0644, NULL, NULL,
+ &fault_around_bytes_fops);
return 0;
}
late_initcall(fault_around_debugfs);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 09bf2c5f8b4b938fefe726d1910580407fdd644d..9be9a22ebe3512bf6df4132fd65a67911c185a83 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3230,24 +3230,14 @@ static int __init fail_page_alloc_debugfs(void)
dir = fault_create_debugfs_attr("fail_page_alloc", NULL,
&fail_page_alloc.attr);
- if (IS_ERR(dir))
- return PTR_ERR(dir);
-
- if (!debugfs_create_bool("ignore-gfp-wait", mode, dir,
- &fail_page_alloc.ignore_gfp_reclaim))
- goto fail;
- if (!debugfs_create_bool("ignore-gfp-highmem", mode, dir,
- &fail_page_alloc.ignore_gfp_highmem))
- goto fail;
- if (!debugfs_create_u32("min-order", mode, dir,
- &fail_page_alloc.min_order))
- goto fail;
- return 0;
-fail:
- debugfs_remove_recursive(dir);
+ debugfs_create_bool("ignore-gfp-wait", mode, dir,
+ &fail_page_alloc.ignore_gfp_reclaim);
+ debugfs_create_bool("ignore-gfp-highmem", mode, dir,
+ &fail_page_alloc.ignore_gfp_highmem);
+ debugfs_create_u32("min-order", mode, dir, &fail_page_alloc.min_order);
- return -ENOMEM;
+ return 0;
}
late_initcall(fail_page_alloc_debugfs);
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 28b06524939fa853307307469c76ac76d7955304..925b6f44a444afcddc2a634b8fafb3626eaeb16d 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -625,16 +625,14 @@ static const struct file_operations proc_page_owner_operations = {
static int __init pageowner_init(void)
{
- struct dentry *dentry;
-
if (!static_branch_unlikely(&page_owner_inited)) {
pr_info("page_owner is disabled\n");
return 0;
}
- dentry = debugfs_create_file("page_owner", 0400, NULL,
- NULL, &proc_page_owner_operations);
+ debugfs_create_file("page_owner", 0400, NULL, NULL,
+ &proc_page_owner_operations);
- return PTR_ERR_OR_ZERO(dentry);
+ return 0;
}
late_initcall(pageowner_init)
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 83b30edc2f7f39eeaf17cd6bbd2fbad863ce1503..36b56f858f0f0a8eb8db003d2b2a74a21a4c37f1 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);