84 static int start_this_handle(journal_t *journal, handle_t *handle)  in start_this_handle()  argument
88 	int nblocks = handle->h_buffer_credits;  in start_this_handle()
110 	jbd_debug(3, "New handle %p going live.\n", handle);  in start_this_handle()
177 		jbd_debug(2, "Handle %p starting new commit...\n", handle);  in start_this_handle()
214 		jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);  in start_this_handle()
223 	handle->h_transaction = transaction;  in start_this_handle()
228 		  handle, nblocks, transaction->t_outstanding_credits,  in start_this_handle()
233 	lock_map_acquire(&handle->h_lockdep_map);  in start_this_handle()
245 	handle_t *handle = jbd_alloc_handle(GFP_NOFS);  in new_handle()  local
246 	if (!handle)  in new_handle()
248 	handle->h_buffer_credits = nblocks;  in new_handle()
249 	handle->h_ref = 1;  in new_handle()
251 	lockdep_init_map(&handle->h_lockdep_map, "jbd_handle", &jbd_handle_key, 0);  in new_handle()
253 	return handle;  in new_handle()
273 	handle_t *handle = journal_current_handle();  in journal_start()  local
279 	if (handle) {  in journal_start()
280 		J_ASSERT(handle->h_transaction->t_journal == journal);  in journal_start()
281 		handle->h_ref++;  in journal_start()
282 		return handle;  in journal_start()
285 	handle = new_handle(nblocks);  in journal_start()
286 	if (!handle)  in journal_start()
289 	current->journal_info = handle;  in journal_start()
291 	err = start_this_handle(journal, handle);  in journal_start()
293 		jbd_free_handle(handle);  in journal_start()
295 		handle = ERR_PTR(err);  in journal_start()
297 	return handle;  in journal_start()
320 int journal_extend(handle_t *handle, int nblocks)  in journal_extend()  argument
322 	transaction_t *transaction = handle->h_transaction;  in journal_extend()
328 	if (is_handle_aborted(handle))  in journal_extend()
336 	if (handle->h_transaction->t_state != T_RUNNING) {  in journal_extend()
338 			  "transaction not running\n", handle, nblocks);  in journal_extend()
347 			  "transaction too large\n", handle, nblocks);  in journal_extend()
353 			  "insufficient log space\n", handle, nblocks);  in journal_extend()
357 	handle->h_buffer_credits += nblocks;  in journal_extend()
361 	jbd_debug(3, "extended handle %p by %d\n", handle, nblocks);  in journal_extend()
386 int journal_restart(handle_t *handle, int nblocks)  in journal_restart()  argument
388 	transaction_t *transaction = handle->h_transaction;  in journal_restart()
394 	if (is_handle_aborted(handle))  in journal_restart()
402 	J_ASSERT(journal_current_handle() == handle);  in journal_restart()
406 	transaction->t_outstanding_credits -= handle->h_buffer_credits;  in journal_restart()
413 	jbd_debug(2, "restarting handle %p\n", handle);  in journal_restart()
417 	lock_map_release(&handle->h_lockdep_map);  in journal_restart()
418 	handle->h_buffer_credits = nblocks;  in journal_restart()
419 	ret = start_this_handle(journal, handle);  in journal_restart()
519 do_get_write_access(handle_t *handle, struct journal_head *jh,  in do_get_write_access()  argument
529 	if (is_handle_aborted(handle))  in do_get_write_access()
532 	transaction = handle->h_transaction;  in do_get_write_access()
587 	if (is_handle_aborted(handle)) {  in do_get_write_access()
730 	journal_cancel_revoke(handle, jh);  in do_get_write_access()
751 int journal_get_write_access(handle_t *handle, struct buffer_head *bh)  in journal_get_write_access()  argument
759 	rc = do_get_write_access(handle, jh, 0);  in journal_get_write_access()
784 int journal_get_create_access(handle_t *handle, struct buffer_head *bh)  in journal_get_create_access()  argument
786 	transaction_t *transaction = handle->h_transaction;  in journal_get_create_access()
793 	if (is_handle_aborted(handle))  in journal_get_create_access()
849 	journal_cancel_revoke(handle, jh);  in journal_get_create_access()
880 int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)  in journal_get_undo_access()  argument
893 	err = do_get_write_access(handle, jh, 1);  in journal_get_undo_access()
947 int journal_dirty_data(handle_t *handle, struct buffer_head *bh)  in journal_dirty_data()  argument
949 	journal_t *journal = handle->h_transaction->t_journal;  in journal_dirty_data()
954 	if (is_handle_aborted(handle))  in journal_dirty_data()
964 	jbd_debug(4, "jh: %p, tid:%d\n", jh, handle->h_transaction->t_tid);  in journal_dirty_data()
998 		if (jh->b_transaction != handle->h_transaction) {  in journal_dirty_data()
1077 			    jh->b_transaction != handle->h_transaction) {  in journal_dirty_data()
1084 				jh->b_transaction = handle->h_transaction;  in journal_dirty_data()
1099 			__journal_file_buffer(jh, handle->h_transaction,  in journal_dirty_data()
1104 		__journal_file_buffer(jh, handle->h_transaction, BJ_SyncData);  in journal_dirty_data()
1137 int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)  in journal_dirty_metadata()  argument
1139 	transaction_t *transaction = handle->h_transaction;  in journal_dirty_metadata()
1145 	if (is_handle_aborted(handle))  in journal_dirty_metadata()
1157 		J_ASSERT_JH(jh, handle->h_buffer_credits > 0);  in journal_dirty_metadata()
1158 		handle->h_buffer_credits--;  in journal_dirty_metadata()
1198 	__journal_file_buffer(jh, handle->h_transaction, BJ_Metadata);  in journal_dirty_metadata()
1213 journal_release_buffer(handle_t *handle, struct buffer_head *bh)  in journal_release_buffer()  argument
1235 int journal_forget (handle_t *handle, struct buffer_head *bh)  in journal_forget()  argument
1237 	transaction_t *transaction = handle->h_transaction;  in journal_forget()
1270 	if (jh->b_transaction == handle->h_transaction) {  in journal_forget()
1341 		handle->h_buffer_credits++;  in journal_forget()
1362 int journal_stop(handle_t *handle)  in journal_stop()  argument
1364 	transaction_t *transaction = handle->h_transaction;  in journal_stop()
1369 	J_ASSERT(journal_current_handle() == handle);  in journal_stop()
1371 	if (is_handle_aborted(handle))  in journal_stop()
1378 	if (--handle->h_ref > 0) {  in journal_stop()
1379 		jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1,  in journal_stop()
1380 			  handle->h_ref);  in journal_stop()
1384 	jbd_debug(4, "Handle %p going down\n", handle);  in journal_stop()
1412 	if (handle->h_sync && journal->j_last_sync_writer != pid) {  in journal_stop()
1438 	transaction->t_outstanding_credits -= handle->h_buffer_credits;  in journal_stop()
1452 	if (handle->h_sync ||  in journal_stop()
1463 					"handle %p\n", handle);  in journal_stop()
1472 		if (handle->h_sync && !(current->flags & PF_MEMALLOC))  in journal_stop()
1479 	lock_map_release(&handle->h_lockdep_map);  in journal_stop()
1481 	jbd_free_handle(handle);  in journal_stop()
1495 	handle_t *handle;  in journal_force_commit()  local
1498 	handle = journal_start(journal, 1);  in journal_force_commit()
1499 	if (IS_ERR(handle)) {  in journal_force_commit()
1500 		ret = PTR_ERR(handle);  in journal_force_commit()
1502 		handle->h_sync = 1;  in journal_force_commit()
1503 		ret = journal_stop(handle);  in journal_force_commit()