1 // SPDX-License-Identifier: GPL-2.0
10 void pin_remove(struct fs_pin *pin)  in pin_remove()  argument
13 	hlist_del_init(&pin->m_list);  in pin_remove()
14 	hlist_del_init(&pin->s_list);  in pin_remove()
16 	spin_lock_irq(&pin->wait.lock);  in pin_remove()
17 	pin->done = 1;  in pin_remove()
18 	wake_up_locked(&pin->wait);  in pin_remove()
19 	spin_unlock_irq(&pin->wait.lock);  in pin_remove()
22 void pin_insert(struct fs_pin *pin, struct vfsmount *m)  in pin_insert()  argument
25 	hlist_add_head(&pin->s_list, &m->mnt_sb->s_pins);  in pin_insert()
26 	hlist_add_head(&pin->m_list, &real_mount(m)->mnt_pins);  in pin_insert()
32 	wait_queue_entry_t wait;  in pin_kill()  local
38 	init_wait(&wait);  in pin_kill()
39 	spin_lock_irq(&p->wait.lock);  in pin_kill()
40 	if (likely(!p->done)) {  in pin_kill()
41 		p->done = -1;  in pin_kill()
42 		spin_unlock_irq(&p->wait.lock);  in pin_kill()
44 		p->kill(p);  in pin_kill()
47 	if (p->done > 0) {  in pin_kill()
48 		spin_unlock_irq(&p->wait.lock);  in pin_kill()
52 	__add_wait_queue(&p->wait, &wait);  in pin_kill()
55 		spin_unlock_irq(&p->wait.lock);  in pin_kill()
59 		if (likely(list_empty(&wait.entry)))  in pin_kill()
62 		spin_lock_irq(&p->wait.lock);  in pin_kill()
63 		if (p->done > 0) {  in pin_kill()
64 			spin_unlock_irq(&p->wait.lock);  in pin_kill()
76 		p = READ_ONCE(m->mnt_pins.first);  in mnt_pin_kill()
90 		q = READ_ONCE(p->first);  in group_pin_kill()