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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-06 14:05:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-06 14:05:09 -0700 |
| commit | 9861df15f44d98eb6fa9a839b558633ecee87194 (patch) | |
| tree | 587d1902c33c47fc0bc84f849b9431fd27967668 | |
| parent | 8871b201da6e443b7ab2967050e3064360d0604f (diff) | |
| parent | 67fc25ef34a27dc43ce6dfc98a8b249db304d641 (diff) | |
| download | linux-3.10-9861df15f44d98eb6fa9a839b558633ecee87194.tar.gz linux-3.10-9861df15f44d98eb6fa9a839b558633ecee87194.tar.bz2 linux-3.10-9861df15f44d98eb6fa9a839b558633ecee87194.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
SLAB: Fix lockdep annotations
fix RCU-callback-after-kmem_cache_destroy problem in sl[aou]b
| -rw-r--r-- | mm/slab.c | 8 | ||||
| -rw-r--r-- | mm/slob.c | 2 | ||||
| -rw-r--r-- | mm/slub.c | 2 |
3 files changed, 8 insertions, 4 deletions
diff --git a/mm/slab.c b/mm/slab.c index e74a16e4ced..7b5d4deacfc 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1544,9 +1544,6 @@ void __init kmem_cache_init(void) } g_cpucache_up = EARLY; - - /* Annotate slab for lockdep -- annotate the malloc caches */ - init_lock_keys(); } void __init kmem_cache_init_late(void) @@ -1563,6 +1560,9 @@ void __init kmem_cache_init_late(void) /* Done! */ g_cpucache_up = FULL; + /* Annotate slab for lockdep -- annotate the malloc caches */ + init_lock_keys(); + /* * Register a cpu startup notifier callback that initializes * cpu_cache_get for all new cpus @@ -2547,7 +2547,7 @@ void kmem_cache_destroy(struct kmem_cache *cachep) } if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) - synchronize_rcu(); + rcu_barrier(); __kmem_cache_destroy(cachep); mutex_unlock(&cache_chain_mutex); diff --git a/mm/slob.c b/mm/slob.c index c78742defdc..9641da3d5e5 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -595,6 +595,8 @@ EXPORT_SYMBOL(kmem_cache_create); void kmem_cache_destroy(struct kmem_cache *c) { kmemleak_free(c); + if (c->flags & SLAB_DESTROY_BY_RCU) + rcu_barrier(); slob_free(c, sizeof(struct kmem_cache)); } EXPORT_SYMBOL(kmem_cache_destroy); diff --git a/mm/slub.c b/mm/slub.c index 819f056b39c..a9201d83178 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2595,6 +2595,8 @@ static inline int kmem_cache_close(struct kmem_cache *s) */ void kmem_cache_destroy(struct kmem_cache *s) { + if (s->flags & SLAB_DESTROY_BY_RCU) + rcu_barrier(); down_write(&slub_lock); s->refcount--; if (!s->refcount) { |