linux-kernel - [PATCH 3/4] mm/slab: make calculate

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Message-Id: <20231120091214.150502-4-sxwjean@me.com>
Date:   Mon, 20 Nov 2023 17:12:13 +0800
From:   sxwjean@...com
To:     cl@...ux.com, penberg@...nel.org, rientjes@...gle.com,
        iamjoonsoo.kim@....com, vbabka@...e.cz, roman.gushchin@...ux.dev,
        42.hyeyoo@...il.com
Cc:     corbet@....net, linux-mm@...ck.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] mm/slab: make calculate_alignment() public

From: Xiongwei Song <xiongwei.song@...driver.com>

We are going to move slab merge from slab_common.c to slub.c, there is a
call with it in find_mergeable(), so make it public.

Signed-off-by: Xiongwei Song <xiongwei.song@...driver.com>
---
 mm/slab.h        | 2 ++
 mm/slab_common.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/slab.h b/mm/slab.h
index eb04c8a5dbd1..8d20f8c6269d 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -427,6 +427,8 @@ extern void create_boot_cache(struct kmem_cache *, const char *name,
 			unsigned int size, slab_flags_t flags,
 			unsigned int useroffset, unsigned int usersize);
 
+unsigned int calculate_alignment(slab_flags_t flags,
+		unsigned int align, unsigned int size);
 int slab_unmergeable(struct kmem_cache *s);
 struct kmem_cache *find_mergeable(unsigned size, unsigned align,
 		slab_flags_t flags, const char *name, void (*ctor)(void *));
diff --git a/mm/slab_common.c b/mm/slab_common.c
index d707abd31926..62eb77fdedf2 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -106,7 +106,7 @@ static inline int kmem_cache_sanity_check(const char *name, unsigned int size)
  * Figure out what the alignment of the objects will be given a set of
  * flags, a user specified alignment and the size of the objects.
  */
-static unsigned int calculate_alignment(slab_flags_t flags,
+unsigned int calculate_alignment(slab_flags_t flags,
 		unsigned int align, unsigned int size)
 {
 	/*
-- 
2.34.1