30 static inline void __buffer_unlink_first(struct journal_head *jh)  in __buffer_unlink_first()  argument
32 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink_first()
34 	jh->b_cpnext->b_cpprev = jh->b_cpprev;  in __buffer_unlink_first()
35 	jh->b_cpprev->b_cpnext = jh->b_cpnext;  in __buffer_unlink_first()
36 	if (transaction->t_checkpoint_list == jh) {  in __buffer_unlink_first()
37 		transaction->t_checkpoint_list = jh->b_cpnext;  in __buffer_unlink_first()
38 		if (transaction->t_checkpoint_list == jh)  in __buffer_unlink_first()
48 static inline void __buffer_unlink(struct journal_head *jh)  in __buffer_unlink()  argument
50 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink()
52 	__buffer_unlink_first(jh);  in __buffer_unlink()
53 	if (transaction->t_checkpoint_io_list == jh) {  in __buffer_unlink()
54 		transaction->t_checkpoint_io_list = jh->b_cpnext;  in __buffer_unlink()
55 		if (transaction->t_checkpoint_io_list == jh)  in __buffer_unlink()
65 static inline void __buffer_relink_io(struct journal_head *jh)  in __buffer_relink_io()  argument
67 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_relink_io()
69 	__buffer_unlink_first(jh);  in __buffer_relink_io()
72 		jh->b_cpnext = jh->b_cpprev = jh;  in __buffer_relink_io()
74 		jh->b_cpnext = transaction->t_checkpoint_io_list;  in __buffer_relink_io()
75 		jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;  in __buffer_relink_io()
76 		jh->b_cpprev->b_cpnext = jh;  in __buffer_relink_io()
77 		jh->b_cpnext->b_cpprev = jh;  in __buffer_relink_io()
79 	transaction->t_checkpoint_io_list = jh;  in __buffer_relink_io()
89 static int __try_to_free_cp_buf(struct journal_head *jh)  in __try_to_free_cp_buf()  argument
92 	struct buffer_head *bh = jh2bh(jh);  in __try_to_free_cp_buf()
94 	if (jh->b_transaction == NULL && !buffer_locked(bh) &&  in __try_to_free_cp_buf()
96 		JBUFFER_TRACE(jh, "remove from checkpoint list");  in __try_to_free_cp_buf()
97 		ret = __jbd2_journal_remove_checkpoint(jh) + 1;  in __try_to_free_cp_buf()
207 	struct journal_head	*jh;  in jbd2_log_do_checkpoint()  local
250 		jh = transaction->t_checkpoint_list;  in jbd2_log_do_checkpoint()
251 		bh = jh2bh(jh);  in jbd2_log_do_checkpoint()
262 		if (jh->b_transaction != NULL) {  in jbd2_log_do_checkpoint()
263 			transaction_t *t = jh->b_transaction;  in jbd2_log_do_checkpoint()
287 			if (__jbd2_journal_remove_checkpoint(jh))  in jbd2_log_do_checkpoint()
304 		__buffer_relink_io(jh);  in jbd2_log_do_checkpoint()
333 		jh = transaction->t_checkpoint_io_list;  in jbd2_log_do_checkpoint()
334 		bh = jh2bh(jh);  in jbd2_log_do_checkpoint()
353 		if (__jbd2_journal_remove_checkpoint(jh))  in jbd2_log_do_checkpoint()
422 static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy)  in journal_clean_one_cp_list()  argument
425 	struct journal_head *next_jh = jh;  in journal_clean_one_cp_list()
428 	if (!jh)  in journal_clean_one_cp_list()
431 	last_jh = jh->b_cpprev;  in journal_clean_one_cp_list()
433 		jh = next_jh;  in journal_clean_one_cp_list()
434 		next_jh = jh->b_cpnext;  in journal_clean_one_cp_list()
436 			ret = __try_to_free_cp_buf(jh);  in journal_clean_one_cp_list()
438 			ret = __jbd2_journal_remove_checkpoint(jh) + 1;  in journal_clean_one_cp_list()
451 	} while (jh != last_jh);  in journal_clean_one_cp_list()
548 int __jbd2_journal_remove_checkpoint(struct journal_head *jh)  in __jbd2_journal_remove_checkpoint()  argument
555 	JBUFFER_TRACE(jh, "entry");  in __jbd2_journal_remove_checkpoint()
557 	if ((transaction = jh->b_cp_transaction) == NULL) {  in __jbd2_journal_remove_checkpoint()
558 		JBUFFER_TRACE(jh, "not on transaction");  in __jbd2_journal_remove_checkpoint()
563 	JBUFFER_TRACE(jh, "removing from transaction");  in __jbd2_journal_remove_checkpoint()
564 	__buffer_unlink(jh);  in __jbd2_journal_remove_checkpoint()
565 	jh->b_cp_transaction = NULL;  in __jbd2_journal_remove_checkpoint()
566 	jbd2_journal_put_journal_head(jh);  in __jbd2_journal_remove_checkpoint()
608 void __jbd2_journal_insert_checkpoint(struct journal_head *jh,  in __jbd2_journal_insert_checkpoint()  argument
611 	JBUFFER_TRACE(jh, "entry");  in __jbd2_journal_insert_checkpoint()
612 	J_ASSERT_JH(jh, buffer_dirty(jh2bh(jh)) || buffer_jbddirty(jh2bh(jh)));  in __jbd2_journal_insert_checkpoint()
613 	J_ASSERT_JH(jh, jh->b_cp_transaction == NULL);  in __jbd2_journal_insert_checkpoint()
616 	jbd2_journal_grab_journal_head(jh2bh(jh));  in __jbd2_journal_insert_checkpoint()
617 	jh->b_cp_transaction = transaction;  in __jbd2_journal_insert_checkpoint()
620 		jh->b_cpnext = jh->b_cpprev = jh;  in __jbd2_journal_insert_checkpoint()
622 		jh->b_cpnext = transaction->t_checkpoint_list;  in __jbd2_journal_insert_checkpoint()
623 		jh->b_cpprev = transaction->t_checkpoint_list->b_cpprev;  in __jbd2_journal_insert_checkpoint()
624 		jh->b_cpprev->b_cpnext = jh;  in __jbd2_journal_insert_checkpoint()
625 		jh->b_cpnext->b_cpprev = jh;  in __jbd2_journal_insert_checkpoint()
627 	transaction->t_checkpoint_list = jh;  in __jbd2_journal_insert_checkpoint()