get_futex_key_refs

Name:Take a reference to the resource addressed by a key.* Can be called while holding spinlocks.

Proto:static void get_futex_key_refs(union futex_key *key)

Type:void

Parameter:

Type	Parameter	Name
union futex_key *	key

417

If Not ptr Then Return

425

If Not IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_MMU) Then

426

427

Return

431

Case & == We set bit 0 if key has a reference on inode

432

433

Break

434

Case & == We set bit 1 if key has a reference on mm

435

futex_get_mm(key)

436

Break

437

Default

443

**Caller**
Name	Describe
get_futex_key	get_futex_key() - Get parameters which are the keys for a futex@uaddr: virtual address of the futex@fshared: 0 for a PROCESS_PRIVATE futex, 1 for PROCESS_SHARED*@key: address where result is stored
requeue_futex	queue_futex() - Requeue a futex_q from one hb to another@q: the futex_q to requeue@hb1: the source hash_bucket@hb2: the target hash_bucket@key2: the new key for the requeued futex_q
requeue_pi_wake_futex	queue_pi_wake_futex() - Wake a task that acquired the lock during requeue@q: the futex_q@key: the key of the requeue target futex@hb: the hash_bucket of the requeue target futex During futex_requeue, with requeue_pi=1, it is possible to acquire the

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion