From: Heiko Carstens <[email protected]>
Looks like this was forgotten when CPU_LOCK_[ACQUIRE|RELEASE] was
introduced.
Cc: Pekka Enberg <[email protected]>
Cc: Srivatsa Vaddagiri <[email protected]>
Cc: Gautham Shenoy <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
---
mm/slab.c | 13 +++++--------
1 files changed, 5 insertions(+), 8 deletions(-)
Index: linux-2.6.20-rc3-mm1/mm/slab.c
===================================================================
--- linux-2.6.20-rc3-mm1.orig/mm/slab.c
+++ linux-2.6.20-rc3-mm1/mm/slab.c
@@ -1177,8 +1177,10 @@ static int __cpuinit cpuup_callback(stru
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.
@@ -1264,16 +1266,9 @@ static int __cpuinit cpuup_callback(stru
}
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
@@ -1344,6 +1339,8 @@ free_array_cache:
continue;
drain_freelist(cachep, l3, l3->free_objects);
}
+ break;
+ case CPU_LOCK_RELEASE:
mutex_unlock(&cache_chain_mutex);
break;
}
-
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