slab: make __kmem_cache_create() static inline

Make __kmem_cache_create() a static inline function.

Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

Author: brauner

include/linux/slab.h

@@ -262,10 +262,17 @@ struct kmem_cache *__kmem_cache_create_args(const char *name,
 					    unsigned int object_size,
 					    struct kmem_cache_args *args,
 					    slab_flags_t flags);
+static inline struct kmem_cache *
+__kmem_cache_create(const char *name, unsigned int size, unsigned int align,
+		    slab_flags_t flags, void (*ctor)(void *))
+{
+	struct kmem_cache_args kmem_args = {
+		.align	= align,
+		.ctor	= ctor,
+	};
 
-struct kmem_cache *__kmem_cache_create(const char *name, unsigned int size,
-				       unsigned int align, slab_flags_t flags,
-				       void (*ctor)(void *));
+	return __kmem_cache_create_args(name, size, &kmem_args, flags);
+}
 
 /**
  * kmem_cache_create_usercopy - Create a cache with a region suitable

mm/slab_common.c

@@ -337,44 +337,6 @@ struct kmem_cache *__kmem_cache_create_args(const char *name,
 }
 EXPORT_SYMBOL(__kmem_cache_create_args);
 
-/**
- * __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 *))
-{
-	struct kmem_cache_args kmem_args = {
-		.align	= align,
-		.ctor	= ctor,
-	};
-
-	return __kmem_cache_create_args(name, size, &kmem_args, flags);
-}
-EXPORT_SYMBOL(__kmem_cache_create);
-
 static struct kmem_cache *kmem_buckets_cache __ro_after_init;
 
 /**