diff options
author | Christoph Lameter <cl@linux.com> | 2012-09-04 23:18:33 (GMT) |
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committer | Pekka Enberg <penberg@kernel.org> | 2012-09-05 09:00:35 (GMT) |
commit | 945cf2b6199be70ff03102b9e642c3bb05d01de9 (patch) | |
tree | b0deef56b1d79af1054f0cf1bd91c6fb00ce31a5 /mm/slab_common.c | |
parent | 7c9adf5a5471647f392169ef19d3e81dcfa76045 (diff) | |
download | linux-945cf2b6199be70ff03102b9e642c3bb05d01de9.tar.xz |
mm/sl[aou]b: Extract a common function for kmem_cache_destroy
kmem_cache_destroy does basically the same in all allocators.
Extract common code which is easy since we already have common mutex
handling.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r-- | mm/slab_common.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index 5190a7c..a1c4f0b 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -140,6 +140,31 @@ out_locked: } EXPORT_SYMBOL(kmem_cache_create); +void kmem_cache_destroy(struct kmem_cache *s) +{ + get_online_cpus(); + mutex_lock(&slab_mutex); + s->refcount--; + if (!s->refcount) { + list_del(&s->list); + + if (!__kmem_cache_shutdown(s)) { + if (s->flags & SLAB_DESTROY_BY_RCU) + rcu_barrier(); + + __kmem_cache_destroy(s); + } else { + list_add(&s->list, &slab_caches); + printk(KERN_ERR "kmem_cache_destroy %s: Slab cache still has objects\n", + s->name); + dump_stack(); + } + } + mutex_unlock(&slab_mutex); + put_online_cpus(); +} +EXPORT_SYMBOL(kmem_cache_destroy); + int slab_is_available(void) { return slab_state >= UP; |