refcount_inc_not

函数名称：_inc_not_zero - increment a refcount unless it is 0*@r: the refcount to increment* Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the

函数原型：static inline __must_check bool refcount_inc_not_zero(refcount_t *r)

返回类型：bool

参数：

类型	参数	名称
refcount_t *	r

**调用者**
名称	描述
get_pi_state
btf_get_fd_by_id
perf_event_ctx_lock_nested	Because of perf_event::ctx migration in sys_perf_event_open::move_group and* perf_pmu_migrate_context() we need some magic.* Those places that change perf_event::ctx will hold both* perf_event_ctx::mutex of the 'old' and 'new' ctx value.
perf_lock_task_context	Get the perf_event_context for a task and lock it.* This has to cope with with the fact that until it is locked,* the context could get moved to another task.
ring_buffer_get
__perf_event_ctx_lock_double	Variation on perf_event_ctx_lock_nested(), except we take two context* mutexes.
perf_aux_output_begin	This is called before hardware starts writing to the AUX area to* obtain an output handle and make sure there's room in the buffer
mem_cgroup_id_get_online
ipc_rcu_getref
blk_mq_check_expired
key_lookup	Find a key by its serial number.
find_keyring_by_name	Find a keyring with the specified name
fsnotify_get_mark_safe	Get mark reference when we found the mark via lockless traversal of object* list. Mark can be already removed from the list by now and on its way to be* destroyed once SRCU period ends.* Also pin the group so it doesn't disappear under us.
io_link_timeout_fn
io_uring_cancel_files
io_worker_get
add_existing_master_key
get_cached_acl
kref_get_unless_zero	kref_get_unless_zero - Increment refcount for object unless it is zero
qdisc_refcount_inc_nz	Intended to be used by unlocked users, when concurrent qdisc release is* possible.
reqsk_alloc
__ipv6_neigh_lookup
txopt_get
__ipv4_neigh_lookup
inet_lookup
ib_device_try_get	_device_try_get: Hold a registration lock* device: The device to lock* A device under an active registration lock cannot become unregistered. It* is only possible to obtain a registration lock on a device that is fully
get_rpccred
sk_psock_get_checked
sk_psock_get
fib6_info_hold_safe

函数逻辑报告