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[PATCH] slab: extract slab_destroy_objs()

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Create a helper function, slab_destroy_objs() which called from
slab_destroy().  This makes slab_destroy() smaller and more readable, and
moves ifdefs outside the function body.

Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matthew Dobson 2006-02-01 03:05:46 -08:00 committed by Linus Torvalds
parent fbaccacff1
commit 12dd36faec
1 changed files with 20 additions and 8 deletions
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28
mm/slab.c
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@ -1459,15 +1459,13 @@ static void check_poison_obj(kmem_cache_t *cachep, void *objp)
}
#endif
/* Destroy all the objs in a slab, and release the mem back to the system.
* Before calling the slab must have been unlinked from the cache.
* The cache-lock is not held/needed.
*/
static void slab_destroy(kmem_cache_t *cachep, struct slab *slabp)
{
void *addr = slabp->s_mem - slabp->colouroff;
#if DEBUG
/**
* slab_destroy_objs - call the registered destructor for each object in
* a slab that is to be destroyed.
*/
static void slab_destroy_objs(kmem_cache_t *cachep, struct slab *slabp)
{
int i;
for (i = 0; i < cachep->num; i++) {
void *objp = slabp->s_mem + cachep->buffer_size * i;
@ -1496,7 +1494,10 @@ static void slab_destroy(kmem_cache_t *cachep, struct slab *slabp)
if (cachep->dtor && !(cachep->flags & SLAB_POISON))
(cachep->dtor) (objp + obj_offset(cachep), cachep, 0);
}
}
#else
static void slab_destroy_objs(kmem_cache_t *cachep, struct slab *slabp)
{
if (cachep->dtor) {
int i;
for (i = 0; i < cachep->num; i++) {
@ -1504,8 +1505,19 @@ static void slab_destroy(kmem_cache_t *cachep, struct slab *slabp)
(cachep->dtor) (objp, cachep, 0);
}
}
}
#endif
/**
* Destroy all the objs in a slab, and release the mem back to the system.
* Before calling the slab must have been unlinked from the cache.
* The cache-lock is not held/needed.
*/
static void slab_destroy(kmem_cache_t *cachep, struct slab *slabp)
{
void *addr = slabp->s_mem - slabp->colouroff;
slab_destroy_objs(cachep, slabp);
if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) {
struct slab_rcu *slab_rcu;