70 static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention)  in shrink_tnc()  argument
76 	ubifs_assert(mutex_is_locked(&c->umount_mutex));  in shrink_tnc()
77 	ubifs_assert(mutex_is_locked(&c->tnc_mutex));  in shrink_tnc()
79 	if (!c->zroot.znode || atomic_long_read(&c->clean_zn_cnt) == 0)  in shrink_tnc()
92 	znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);  in shrink_tnc()
94 	       atomic_long_read(&c->clean_zn_cnt) > 0) {  in shrink_tnc()
126 				c->zroot.znode = NULL;  in shrink_tnc()
130 			atomic_long_sub(freed, &c->clean_zn_cnt);  in shrink_tnc()
135 		if (unlikely(!c->zroot.znode))  in shrink_tnc()
139 		znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);  in shrink_tnc()
158 	struct ubifs_info *c;  in shrink_tnc_trees()  local
170 		c = list_entry(p, struct ubifs_info, infos_list);  in shrink_tnc_trees()
175 		if (c->shrinker_run_no == run_no)  in shrink_tnc_trees()
177 		if (!mutex_trylock(&c->umount_mutex)) {  in shrink_tnc_trees()
187 		if (!mutex_trylock(&c->tnc_mutex)) {  in shrink_tnc_trees()
188 			mutex_unlock(&c->umount_mutex);  in shrink_tnc_trees()
198 		c->shrinker_run_no = run_no;  in shrink_tnc_trees()
199 		freed += shrink_tnc(c, nr, age, contention);  in shrink_tnc_trees()
200 		mutex_unlock(&c->tnc_mutex);  in shrink_tnc_trees()
208 		list_move_tail(&c->infos_list, &ubifs_infos);  in shrink_tnc_trees()
209 		mutex_unlock(&c->umount_mutex);  in shrink_tnc_trees()
228 	struct ubifs_info *c;  in kick_a_thread()  local
237 		list_for_each_entry(c, &ubifs_infos, infos_list) {  in kick_a_thread()
240 			if (!mutex_trylock(&c->umount_mutex)) {  in kick_a_thread()
249 			dirty_zn_cnt = atomic_long_read(&c->dirty_zn_cnt);  in kick_a_thread()
251 			if (!dirty_zn_cnt || c->cmt_state == COMMIT_BROKEN ||  in kick_a_thread()
252 			    c->ro_mount || c->ro_error) {  in kick_a_thread()
253 				mutex_unlock(&c->umount_mutex);  in kick_a_thread()
257 			if (c->cmt_state != COMMIT_RESTING) {  in kick_a_thread()
259 				mutex_unlock(&c->umount_mutex);  in kick_a_thread()
264 				list_move_tail(&c->infos_list, &ubifs_infos);  in kick_a_thread()
267 				ubifs_request_bg_commit(c);  in kick_a_thread()
268 				mutex_unlock(&c->umount_mutex);  in kick_a_thread()
271 			mutex_unlock(&c->umount_mutex);  in kick_a_thread()