linux-kernel - [PATCH 5.11 589/601] mm/sl?b.c: remove ctor argument from kmem_cache

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Date:   Wed, 12 May 2021 16:51:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Nikolay Borisov <nborisov@...e.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Christoph Lameter <cl@...ux.com>,
        David Rientjes <rientjes@...gle.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 589/601] mm/sl?b.c: remove ctor argument from kmem_cache_flags

From: Nikolay Borisov <nborisov@...e.com>

[ Upstream commit 3754000872188e3e4713d9d847fe3c615a47c220 ]

This argument hasn't been used since e153362a50a3 ("slub: Remove objsize
check in kmem_cache_flags()") so simply remove it.

Link: https://lkml.kernel.org/r/20210126095733.974665-1-nborisov@suse.com
Signed-off-by: Nikolay Borisov <nborisov@...e.com>
Reviewed-by: Miaohe Lin <linmiaohe@...wei.com>
Reviewed-by: Vlastimil Babka <vbabka@...e.cz>
Acked-by: Christoph Lameter <cl@...ux.com>
Acked-by: David Rientjes <rientjes@...gle.com>
Cc: Pekka Enberg <penberg@...nel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: Vlastimil Babka <vbabka@...e.cz>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 mm/slab.c        | 3 +--
 mm/slab.h        | 6 ++----
 mm/slab_common.c | 2 +-
 mm/slub.c        | 9 +++------
 4 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index d7c8da9319c7..e2d2044389ea 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1790,8 +1790,7 @@ static int __ref setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp)
 }
 
 slab_flags_t kmem_cache_flags(unsigned int object_size,
-	slab_flags_t flags, const char *name,
-	void (*ctor)(void *))
+	slab_flags_t flags, const char *name)
 {
 	return flags;
 }
diff --git a/mm/slab.h b/mm/slab.h
index 1a756a359fa8..9e83616bb5b4 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -110,8 +110,7 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
 		   slab_flags_t flags, void (*ctor)(void *));
 
 slab_flags_t kmem_cache_flags(unsigned int object_size,
-	slab_flags_t flags, const char *name,
-	void (*ctor)(void *));
+	slab_flags_t flags, const char *name);
 #else
 static inline struct kmem_cache *
 __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
@@ -119,8 +118,7 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
 { return NULL; }
 
 static inline slab_flags_t kmem_cache_flags(unsigned int object_size,
-	slab_flags_t flags, const char *name,
-	void (*ctor)(void *))
+	slab_flags_t flags, const char *name)
 {
 	return flags;
 }
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 0b775cb5c108..174d8652d9fe 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -197,7 +197,7 @@ struct kmem_cache *find_mergeable(unsigned int size, unsigned int align,
 	size = ALIGN(size, sizeof(void *));
 	align = calculate_alignment(flags, align, size);
 	size = ALIGN(size, align);
-	flags = kmem_cache_flags(size, flags, name, NULL);
+	flags = kmem_cache_flags(size, flags, name);
 
 	if (flags & SLAB_NEVER_MERGE)
 		return NULL;
diff --git a/mm/slub.c b/mm/slub.c
index c86037b38253..d62db41710bf 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1400,7 +1400,6 @@ __setup("slub_debug", setup_slub_debug);
  * @object_size:	the size of an object without meta data
  * @flags:		flags to set
  * @name:		name of the cache
- * @ctor:		constructor function
  *
  * Debug option(s) are applied to @flags. In addition to the debug
  * option(s), if a slab name (or multiple) is specified i.e.
@@ -1408,8 +1407,7 @@ __setup("slub_debug", setup_slub_debug);
  * then only the select slabs will receive the debug option(s).
  */
 slab_flags_t kmem_cache_flags(unsigned int object_size,
-	slab_flags_t flags, const char *name,
-	void (*ctor)(void *))
+	slab_flags_t flags, const char *name)
 {
 	char *iter;
 	size_t len;
@@ -1474,8 +1472,7 @@ static inline void add_full(struct kmem_cache *s, struct kmem_cache_node *n,
 static inline void remove_full(struct kmem_cache *s, struct kmem_cache_node *n,
 					struct page *page) {}
 slab_flags_t kmem_cache_flags(unsigned int object_size,
-	slab_flags_t flags, const char *name,
-	void (*ctor)(void *))
+	slab_flags_t flags, const char *name)
 {
 	return flags;
 }
@@ -3797,7 +3794,7 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
 
 static int kmem_cache_open(struct kmem_cache *s, slab_flags_t flags)
 {
-	s->flags = kmem_cache_flags(s->size, flags, s->name, s->ctor);
+	s->flags = kmem_cache_flags(s->size, flags, s->name);
 #ifdef CONFIG_SLAB_FREELIST_HARDENED
 	s->random = get_random_long();
 #endif
-- 
2.30.2