116 static void fill_ac(struct bsd_acct_struct *acct);
117 static void acct_write_process(struct bsd_acct_struct *acct);
122 static bool check_free_space(struct bsd_acct_struct *acct)  in check_free_space()  argument
126 	if (!acct->check_space)  in check_free_space()
127 		return acct->active;  in check_free_space()
130 	if (vfs_statfs(&acct->file->f_path, &sbuf))  in check_free_space()
131 		return acct->active;  in check_free_space()
133 	if (acct->active) {  in check_free_space()
137 			acct->active = false;  in check_free_space()
144 			acct->active = true;  in check_free_space()
149 	acct->needcheck = jiffies + ACCT_TIMEOUT*HZ;  in check_free_space()
150 	return acct->active;  in check_free_space()
192 	struct bsd_acct_struct *acct = to_acct(pin);  in acct_pin_kill()  local
193 	mutex_lock(&acct->lock);  in acct_pin_kill()
198 	fill_ac(acct);  in acct_pin_kill()
199 	schedule_work(&acct->work);  in acct_pin_kill()
200 	wait_for_completion(&acct->done);  in acct_pin_kill()
201 	cmpxchg(&acct->ns->bacct, pin, NULL);  in acct_pin_kill()
202 	mutex_unlock(&acct->lock);  in acct_pin_kill()
204 	acct_put(acct);  in acct_pin_kill()
209 	struct bsd_acct_struct *acct = container_of(work, struct bsd_acct_struct, work);  in close_work()  local
210 	struct file *file = acct->file;  in close_work()
213 	acct_write_process(acct);  in close_work()
217 	complete(&acct->done);  in close_work()
225 	struct bsd_acct_struct *acct;  in acct_on()  local
229 	acct = kzalloc(sizeof(struct bsd_acct_struct), GFP_KERNEL);  in acct_on()
230 	if (!acct)  in acct_on()
236 		kfree(acct);  in acct_on()
241 		kfree(acct);  in acct_on()
248 		kfree(acct);  in acct_on()
255 		kfree(acct);  in acct_on()
261 		kfree(acct);  in acct_on()
267 		kfree(acct);  in acct_on()
274 		kfree(acct);  in acct_on()
281 	atomic_long_set(&acct->count, 1);  in acct_on()
282 	init_fs_pin(&acct->pin, acct_pin_kill);  in acct_on()
283 	acct->file = file;  in acct_on()
284 	acct->needcheck = jiffies;  in acct_on()
285 	acct->ns = ns;  in acct_on()
286 	mutex_init(&acct->lock);  in acct_on()
287 	INIT_WORK(&acct->work, close_work);  in acct_on()
288 	init_completion(&acct->done);  in acct_on()
289 	mutex_lock_nested(&acct->lock, 1);	/* nobody has seen it yet */  in acct_on()
290 	pin_insert(&acct->pin, mnt);  in acct_on()
293 	old = xchg(&ns->bacct, &acct->pin);  in acct_on()
294 	mutex_unlock(&acct->lock);  in acct_on()
314 SYSCALL_DEFINE1(acct, const char __user *, name)  in SYSCALL_DEFINE1()  argument
456 static void fill_ac(struct bsd_acct_struct *acct)  in fill_ac()  argument
459 	struct file *file = acct->file;  in fill_ac()
460 	acct_t *ac = &acct->ac;  in fill_ac()
465 	lockdep_assert_held(&acct->lock);  in fill_ac()
467 	if (time_is_after_jiffies(acct->needcheck)) {  in fill_ac()
468 		acct->check_space = false;  in fill_ac()
471 		if (!acct->active)  in fill_ac()
474 		acct->check_space = true;  in fill_ac()
534 		struct pid_namespace *ns = acct->ns;  in fill_ac()
544 static void acct_write_process(struct bsd_acct_struct *acct)  in acct_write_process()  argument
546 	struct file *file = acct->file;  in acct_write_process()
548 	acct_t *ac = &acct->ac;  in acct_write_process()
559 	if (check_free_space(acct) && file_start_write_trylock(file)) {  in acct_write_process()
569 static void do_acct_process(struct bsd_acct_struct *acct)  in do_acct_process()  argument
576 	fill_ac(acct);  in do_acct_process()
577 	acct_write_process(acct);  in do_acct_process()
629 		struct bsd_acct_struct *acct = acct_get(ns);  in slow_acct_process()  local
630 		if (acct) {  in slow_acct_process()
631 			do_acct_process(acct);  in slow_acct_process()
632 			mutex_unlock(&acct->lock);  in slow_acct_process()
633 			acct_put(acct);  in slow_acct_process()