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[PATCH] Make kmem_cache_destroy() return void

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un-, de-, -free, -destroy, -exit, etc functions should in general return
void.  Also,

There is very little, say, filesystem driver code can do upon failed
kmem_cache_destroy().  If it will be decided to BUG in this case, BUG
should be put in generic code, instead.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alexey Dobriyan 2006-09-27 01:49:41 -07:00 committed by Linus Torvalds
parent 1a1d92c10d
commit 133d205a18
3 changed files with 5 additions and 8 deletions
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4
include/linux/slab.h
View file

@ -60,7 +60,7 @@ extern void __init kmem_cache_init(void);
extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned long,
void (*)(void *, kmem_cache_t *, unsigned long),
void (*)(void *, kmem_cache_t *, unsigned long));
extern int kmem_cache_destroy(kmem_cache_t *);
extern void kmem_cache_destroy(kmem_cache_t *);
extern int kmem_cache_shrink(kmem_cache_t *);
extern void *kmem_cache_alloc(kmem_cache_t *, gfp_t);
extern void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
@ -249,7 +249,7 @@ struct kmem_cache *kmem_cache_create(const char *c, size_t, size_t,
unsigned long,
void (*)(void *, struct kmem_cache *, unsigned long),
void (*)(void *, struct kmem_cache *, unsigned long));
int kmem_cache_destroy(struct kmem_cache *c);
void kmem_cache_destroy(struct kmem_cache *c);
void *kmem_cache_alloc(struct kmem_cache *c, gfp_t flags);
void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
void kmem_cache_free(struct kmem_cache *c, void *b);

6
mm/slab.c
View file

@ -2442,7 +2442,6 @@ EXPORT_SYMBOL(kmem_cache_shrink);
* @cachep: the cache to destroy
*
* Remove a struct kmem_cache object from the slab cache.
* Returns 0 on success.
*
* It is expected this function will be called by a module when it is
* unloaded. This will remove the cache completely, and avoid a duplicate
@ -2454,7 +2453,7 @@ EXPORT_SYMBOL(kmem_cache_shrink);
* The caller must guarantee that noone will allocate memory from the cache
* during the kmem_cache_destroy().
*/
int kmem_cache_destroy(struct kmem_cache *cachep)
void kmem_cache_destroy(struct kmem_cache *cachep)
{
BUG_ON(!cachep || in_interrupt());
@ -2475,7 +2474,7 @@ int kmem_cache_destroy(struct kmem_cache *cachep)
list_add(&cachep->next, &cache_chain);
mutex_unlock(&cache_chain_mutex);
unlock_cpu_hotplug();
return 1;
return;
}
if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU))
@ -2483,7 +2482,6 @@ int kmem_cache_destroy(struct kmem_cache *cachep)
__kmem_cache_destroy(cachep);
unlock_cpu_hotplug();
return 0;
}
EXPORT_SYMBOL(kmem_cache_destroy);

3
mm/slob.c
View file

@ -270,10 +270,9 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
}
EXPORT_SYMBOL(kmem_cache_create);
int kmem_cache_destroy(struct kmem_cache *c)
void kmem_cache_destroy(struct kmem_cache *c)
{
slob_free(c, sizeof(struct kmem_cache));
return 0;
}
EXPORT_SYMBOL(kmem_cache_destroy);