linux-kernel - [PATCH 09/10] mm/slab: Simplify create_kmalloc

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Date:   Tue,  5 Apr 2022 14:57:57 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 09/10] mm/slab: Simplify create_kmalloc_cache() args and make it static

create_kmalloc_cache() is now only called from new_kmalloc_cache() in
the same file, so make it static. In addition, the useroffset argument
is always 0 while usersize is the same as size. Remove them.

Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 mm/slab.h        | 3 ---
 mm/slab_common.c | 9 ++++-----
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/mm/slab.h b/mm/slab.h
index e9238406602a..d334b5e6d7aa 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -280,9 +280,6 @@ gfp_t kmalloc_fix_flags(gfp_t flags);
 /* Functions provided by the slab allocators */
 int __kmem_cache_create(struct kmem_cache *, slab_flags_t flags);
 
-struct kmem_cache *create_kmalloc_cache(const char *name, unsigned int size,
-			slab_flags_t flags, unsigned int useroffset,
-			unsigned int usersize);
 void __init new_kmalloc_cache(int idx, enum kmalloc_cache_type type,
 			      slab_flags_t flags);
 extern void create_boot_cache(struct kmem_cache *, const char *name,
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 594d8a8a68d0..3a9f7a1e6490 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -655,16 +655,15 @@ void __init create_boot_cache(struct kmem_cache *s, const char *name,
 	s->refcount = -1;	/* Exempt from merging for now */
 }
 
-struct kmem_cache *__init create_kmalloc_cache(const char *name,
-		unsigned int size, slab_flags_t flags,
-		unsigned int useroffset, unsigned int usersize)
+static struct kmem_cache *__init create_kmalloc_cache(const char *name,
+		unsigned int size, slab_flags_t flags)
 {
 	struct kmem_cache *s = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT);
 
 	if (!s)
 		panic("Out of memory when creating slab %s\n", name);
 
-	create_boot_cache(s, name, size, flags, useroffset, usersize);
+	create_boot_cache(s, name, size, flags, 0, size);
 	kasan_cache_create_kmalloc(s);
 	list_add(&s->list, &slab_caches);
 	s->refcount = 1;
@@ -868,7 +867,7 @@ new_kmalloc_cache(int idx, enum kmalloc_cache_type type, slab_flags_t flags)
 	if (!kmalloc_caches[type][aligned_idx])
 		kmalloc_caches[type][aligned_idx] = create_kmalloc_cache(
 					kmalloc_info[aligned_idx].name[type],
-					aligned_size, flags, 0, aligned_size);
+					aligned_size, flags);
 	if (idx != aligned_idx)
 		kmalloc_caches[type][idx] = kmalloc_caches[type][aligned_idx];