slab: use CPU_LOCK_[ACQUIRE|RELEASE]

Looks like this was forgotten when CPU_LOCK_[ACQUIRE|RELEASE] was
introduced.

Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: Gautham Shenoy <ego@in.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/slab.c b/mm/slab.c
index 01262d26e192f64575a62b32406905f0b8d234ac..cceb347a354ec01e39fce84a58e2c164c99845ff 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1186,8 +1186,10 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb,
        int memsize = sizeof(struct kmem_list3);
 
        switch (action) {
-       case CPU_UP_PREPARE:
+       case CPU_LOCK_ACQUIRE:
                mutex_lock(&cache_chain_mutex);
+               break;
+       case CPU_UP_PREPARE:
                /*
                 * We need to do this right in the beginning since
                 * alloc_arraycache's are going to use this list.
@@ -1274,16 +1276,9 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb,
                }
                break;
        case CPU_ONLINE:
-               mutex_unlock(&cache_chain_mutex);
                start_cpu_timer(cpu);
                break;
 #ifdef CONFIG_HOTPLUG_CPU
-       case CPU_DOWN_PREPARE:
-               mutex_lock(&cache_chain_mutex);
-               break;
-       case CPU_DOWN_FAILED:
-               mutex_unlock(&cache_chain_mutex);
-               break;
        case CPU_DEAD:
                /*
                 * Even if all the cpus of a node are down, we don't free the
@@ -1354,6 +1349,8 @@ free_array_cache:
                                continue;
                        drain_freelist(cachep, l3, l3->free_objects);
                }
+               break;
+       case CPU_LOCK_RELEASE:
                mutex_unlock(&cache_chain_mutex);
                break;
        }