diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ipc_namespace.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index 3e6fcacebe8a..3392d50de351 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -25,7 +25,7 @@ struct ipc_ids { }; struct ipc_namespace { - struct kref kref; + atomic_t count; struct ipc_ids ids[3]; int sem_ctls[4]; @@ -61,6 +61,7 @@ struct ipc_namespace { extern struct ipc_namespace init_ipc_ns; extern atomic_t nr_ipc_ns; +extern spinlock_t mq_lock; #if defined(CONFIG_POSIX_MQUEUE) || defined(CONFIG_SYSVIPC) #define INIT_IPC_NS(ns) .ns = &init_ipc_ns, #else @@ -82,18 +83,18 @@ static inline int ipcns_notify(unsigned long l) { return 0; } #endif /* CONFIG_SYSVIPC */ #ifdef CONFIG_POSIX_MQUEUE -extern void mq_init_ns(struct ipc_namespace *ns); +extern int mq_init_ns(struct ipc_namespace *ns); /* default values */ #define DFLT_QUEUESMAX 256 /* max number of message queues */ #define DFLT_MSGMAX 10 /* max number of messages in each queue */ #define HARD_MSGMAX (131072/sizeof(void *)) #define DFLT_MSGSIZEMAX 8192 /* max message size */ #else -#define mq_init_ns(ns) ((void) 0) +static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; } #endif #if defined(CONFIG_IPC_NS) -extern void free_ipc_ns(struct kref *kref); +extern void free_ipc_ns(struct ipc_namespace *ns); extern struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns); extern void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, @@ -103,14 +104,11 @@ extern void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) { if (ns) - kref_get(&ns->kref); + atomic_inc(&ns->count); return ns; } -static inline void put_ipc_ns(struct ipc_namespace *ns) -{ - kref_put(&ns->kref, free_ipc_ns); -} +extern void put_ipc_ns(struct ipc_namespace *ns); #else static inline struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns) |