slab: make kmem_cache_create{_usercopy} description proper kernel-doc

Add the description for kmem_cache_create, fixup the return value paragraph
and make both kmem_cache_create and add the second '*' to the comment
opening.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 31 insertions, 4 deletions

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 7eb8dc136c1cb..dbf63d6c975ab 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -406,8 +406,9 @@ out_free_cache:
 	goto out;
 }
 
-/*
- * kmem_cache_create_usercopy - Create a cache.
+/**
+ * kmem_cache_create_usercopy - Create a cache with a region suitable
+ * for copying to userspace
  * @name: A string which is used in /proc/slabinfo to identify this cache.
  * @size: The size of objects to be created in this cache.
  * @align: The required alignment for the objects.
@@ -416,7 +417,6 @@ out_free_cache:
  * @usersize: Usercopy region size
  * @ctor: A constructor for the objects.
  *
- * Returns a ptr to the cache on success, NULL on failure.
  * Cannot be called within a interrupt, but can be interrupted.
  * The @ctor is run when new pages are allocated by the cache.
  *
@@ -425,12 +425,14 @@ out_free_cache:
  * %SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5)
  * to catch references to uninitialised memory.
  *
- * %SLAB_RED_ZONE - Insert `Red' zones around the allocated memory to check
+ * %SLAB_RED_ZONE - Insert `Red` zones around the allocated memory to check
  * for buffer overruns.
  *
  * %SLAB_HWCACHE_ALIGN - Align the objects in this cache to a hardware
  * cacheline.  This can be beneficial if you're counting cycles as closely
  * as davem.
+ *
+ * Return: a pointer to the cache on success, NULL on failure.
  */
 struct kmem_cache *
 kmem_cache_create_usercopy(const char *name,
@@ -514,6 +516,31 @@ out_unlock:
 }
 EXPORT_SYMBOL(kmem_cache_create_usercopy);
 
+/**
+ * kmem_cache_create - Create a cache.
+ * @name: A string which is used in /proc/slabinfo to identify this cache.
+ * @size: The size of objects to be created in this cache.
+ * @align: The required alignment for the objects.
+ * @flags: SLAB flags
+ * @ctor: A constructor for the objects.
+ *
+ * Cannot be called within a interrupt, but can be interrupted.
+ * The @ctor is run when new pages are allocated by the cache.
+ *
+ * The flags are
+ *
+ * %SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5)
+ * to catch references to uninitialised memory.
+ *
+ * %SLAB_RED_ZONE - Insert `Red` zones around the allocated memory to check
+ * for buffer overruns.
+ *
+ * %SLAB_HWCACHE_ALIGN - Align the objects in this cache to a hardware
+ * cacheline.  This can be beneficial if you're counting cycles as closely
+ * as davem.
+ *
+ * Return: a pointer to the cache on success, NULL on failure.
+ */
 struct kmem_cache *
 kmem_cache_create(const char *name, unsigned int size, unsigned int align,
 		slab_flags_t flags, void (*ctor)(void *))