33 static inline void __buffer_unlink_first(struct journal_head *jh)  in __buffer_unlink_first()  argument
35 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink_first()
37 	jh->b_cpnext->b_cpprev = jh->b_cpprev;  in __buffer_unlink_first()
38 	jh->b_cpprev->b_cpnext = jh->b_cpnext;  in __buffer_unlink_first()
39 	if (transaction->t_checkpoint_list == jh) {  in __buffer_unlink_first()
40 		transaction->t_checkpoint_list = jh->b_cpnext;  in __buffer_unlink_first()
41 		if (transaction->t_checkpoint_list == jh)  in __buffer_unlink_first()
51 static inline void __buffer_unlink(struct journal_head *jh)  in __buffer_unlink()  argument
53 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink()
55 	__buffer_unlink_first(jh);  in __buffer_unlink()
56 	if (transaction->t_checkpoint_io_list == jh) {  in __buffer_unlink()
57 		transaction->t_checkpoint_io_list = jh->b_cpnext;  in __buffer_unlink()
58 		if (transaction->t_checkpoint_io_list == jh)  in __buffer_unlink()
68 static inline void __buffer_relink_io(struct journal_head *jh)  in __buffer_relink_io()  argument
70 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_relink_io()
72 	__buffer_unlink_first(jh);  in __buffer_relink_io()
75 		jh->b_cpnext = jh->b_cpprev = jh;  in __buffer_relink_io()
77 		jh->b_cpnext = transaction->t_checkpoint_io_list;  in __buffer_relink_io()
78 		jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;  in __buffer_relink_io()
79 		jh->b_cpprev->b_cpnext = jh;  in __buffer_relink_io()
80 		jh->b_cpnext->b_cpprev = jh;  in __buffer_relink_io()
82 	transaction->t_checkpoint_io_list = jh;  in __buffer_relink_io()
93 static int __try_to_free_cp_buf(struct journal_head *jh)  in __try_to_free_cp_buf()  argument
96 	struct buffer_head *bh = jh2bh(jh);  in __try_to_free_cp_buf()
98 	if (jh->b_jlist == BJ_None && !buffer_locked(bh) &&  in __try_to_free_cp_buf()
105 		JBUFFER_TRACE(jh, "remove from checkpoint list");  in __try_to_free_cp_buf()
106 		ret = __journal_remove_checkpoint(jh) + 1;  in __try_to_free_cp_buf()
209 	struct journal_head *jh;  in __wait_cp_io()  local
222 		jh = transaction->t_checkpoint_io_list;  in __wait_cp_io()
223 		bh = jh2bh(jh);  in __wait_cp_io()
247 		released = __journal_remove_checkpoint(jh);  in __wait_cp_io()
287 static int __process_buffer(journal_t *journal, struct journal_head *jh,  in __process_buffer()  argument
290 	struct buffer_head *bh = jh2bh(jh);  in __process_buffer()
302 	} else if (jh->b_transaction != NULL) {  in __process_buffer()
303 		transaction_t *t = jh->b_transaction;  in __process_buffer()
316 		J_ASSERT_JH(jh, !buffer_jbddirty(bh));  in __process_buffer()
318 		__journal_remove_checkpoint(jh);  in __process_buffer()
335 		__buffer_relink_io(jh);  in __process_buffer()
394 		struct journal_head *jh;  in log_do_checkpoint()  local
400 			jh = transaction->t_checkpoint_list;  in log_do_checkpoint()
401 			bh = jh2bh(jh);  in log_do_checkpoint()
407 			retry = __process_buffer(journal, jh, bhs,&batch_count);  in log_do_checkpoint()
557 static int journal_clean_one_cp_list(struct journal_head *jh, int *released)  in journal_clean_one_cp_list()  argument
560 	struct journal_head *next_jh = jh;  in journal_clean_one_cp_list()
564 	if (!jh)  in journal_clean_one_cp_list()
567 	last_jh = jh->b_cpprev;  in journal_clean_one_cp_list()
569 		jh = next_jh;  in journal_clean_one_cp_list()
570 		next_jh = jh->b_cpnext;  in journal_clean_one_cp_list()
572 		if (jbd_trylock_bh_state(jh2bh(jh))) {  in journal_clean_one_cp_list()
573 			ret = __try_to_free_cp_buf(jh);  in journal_clean_one_cp_list()
590 	} while (jh != last_jh);  in journal_clean_one_cp_list()
665 int __journal_remove_checkpoint(struct journal_head *jh)  in __journal_remove_checkpoint()  argument
671 	JBUFFER_TRACE(jh, "entry");  in __journal_remove_checkpoint()
673 	if ((transaction = jh->b_cp_transaction) == NULL) {  in __journal_remove_checkpoint()
674 		JBUFFER_TRACE(jh, "not on transaction");  in __journal_remove_checkpoint()
679 	JBUFFER_TRACE(jh, "removing from transaction");  in __journal_remove_checkpoint()
680 	__buffer_unlink(jh);  in __journal_remove_checkpoint()
681 	jh->b_cp_transaction = NULL;  in __journal_remove_checkpoint()
682 	journal_put_journal_head(jh);  in __journal_remove_checkpoint()
721 void __journal_insert_checkpoint(struct journal_head *jh,  in __journal_insert_checkpoint()  argument
724 	JBUFFER_TRACE(jh, "entry");  in __journal_insert_checkpoint()
725 	J_ASSERT_JH(jh, buffer_dirty(jh2bh(jh)) || buffer_jbddirty(jh2bh(jh)));  in __journal_insert_checkpoint()
726 	J_ASSERT_JH(jh, jh->b_cp_transaction == NULL);  in __journal_insert_checkpoint()
729 	journal_grab_journal_head(jh2bh(jh));  in __journal_insert_checkpoint()
730 	jh->b_cp_transaction = transaction;  in __journal_insert_checkpoint()
733 		jh->b_cpnext = jh->b_cpprev = jh;  in __journal_insert_checkpoint()
735 		jh->b_cpnext = transaction->t_checkpoint_list;  in __journal_insert_checkpoint()
736 		jh->b_cpprev = transaction->t_checkpoint_list->b_cpprev;  in __journal_insert_checkpoint()
737 		jh->b_cpprev->b_cpnext = jh;  in __journal_insert_checkpoint()
738 		jh->b_cpnext->b_cpprev = jh;  in __journal_insert_checkpoint()
740 	transaction->t_checkpoint_list = jh;  in __journal_insert_checkpoint()