diff options
| -rw-r--r-- | include/linux/percpu-refcount.h | 4 | ||||
| -rw-r--r-- | lib/percpu-refcount.c | 11 |
2 files changed, 7 insertions, 8 deletions
diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h index b62a4ee6d6ad..6f8cd4c0546c 100644 --- a/include/linux/percpu-refcount.h +++ b/include/linux/percpu-refcount.h @@ -61,7 +61,7 @@ struct percpu_ref { * hack because we need to keep the pointer around for * percpu_ref_kill_rcu()) */ - unsigned __percpu *pcpu_count; + unsigned long pcpu_count_ptr; percpu_ref_func_t *release; percpu_ref_func_t *confirm_kill; struct rcu_head rcu; @@ -99,7 +99,7 @@ static inline void percpu_ref_kill(struct percpu_ref *ref) static inline bool __pcpu_ref_alive(struct percpu_ref *ref, unsigned __percpu **pcpu_countp) { - unsigned long pcpu_ptr = (unsigned long)ACCESS_ONCE(ref->pcpu_count); + unsigned long pcpu_ptr = ACCESS_ONCE(ref->pcpu_count_ptr); if (unlikely(pcpu_ptr & PCPU_REF_DEAD)) return false; diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c index 087f1a04f9bc..94e5b624de64 100644 --- a/lib/percpu-refcount.c +++ b/lib/percpu-refcount.c @@ -33,7 +33,7 @@ static unsigned __percpu *pcpu_count_ptr(struct percpu_ref *ref) { - return (unsigned __percpu *)((unsigned long)ref->pcpu_count & ~PCPU_REF_DEAD); + return (unsigned __percpu *)(ref->pcpu_count_ptr & ~PCPU_REF_DEAD); } /** @@ -51,8 +51,8 @@ int percpu_ref_init(struct percpu_ref *ref, percpu_ref_func_t *release) { atomic_set(&ref->count, 1 + PCPU_COUNT_BIAS); - ref->pcpu_count = alloc_percpu(unsigned); - if (!ref->pcpu_count) + ref->pcpu_count_ptr = (unsigned long)alloc_percpu(unsigned); + if (!ref->pcpu_count_ptr) return -ENOMEM; ref->release = release; @@ -153,11 +153,10 @@ static void percpu_ref_kill_rcu(struct rcu_head *rcu) void percpu_ref_kill_and_confirm(struct percpu_ref *ref, percpu_ref_func_t *confirm_kill) { - WARN_ONCE((unsigned long)ref->pcpu_count & PCPU_REF_DEAD, + WARN_ONCE(ref->pcpu_count_ptr & PCPU_REF_DEAD, "percpu_ref_kill() called more than once!\n"); - ref->pcpu_count = (unsigned __percpu *) - (((unsigned long) ref->pcpu_count)|PCPU_REF_DEAD); + ref->pcpu_count_ptr |= PCPU_REF_DEAD; ref->confirm_kill = confirm_kill; call_rcu_sched(&ref->rcu, percpu_ref_kill_rcu); |