819 	struct buffer_head *bh;  in jbd2_journal_get_descriptor_buffer()  local
828 	bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);  in jbd2_journal_get_descriptor_buffer()
829 	if (!bh)  in jbd2_journal_get_descriptor_buffer()
831 	lock_buffer(bh);  in jbd2_journal_get_descriptor_buffer()
832 	memset(bh->b_data, 0, journal->j_blocksize);  in jbd2_journal_get_descriptor_buffer()
833 	set_buffer_uptodate(bh);  in jbd2_journal_get_descriptor_buffer()
834 	unlock_buffer(bh);  in jbd2_journal_get_descriptor_buffer()
835 	BUFFER_TRACE(bh, "return this buffer");  in jbd2_journal_get_descriptor_buffer()
836 	return bh;  in jbd2_journal_get_descriptor_buffer()
1146 	struct buffer_head *bh;  in jbd2_journal_init_dev()  local
1173 	bh = __getblk(journal->j_dev, start, journal->j_blocksize);  in jbd2_journal_init_dev()
1174 	if (!bh) {  in jbd2_journal_init_dev()
1180 	journal->j_sb_buffer = bh;  in jbd2_journal_init_dev()
1181 	journal->j_superblock = (journal_superblock_t *)bh->b_data;  in jbd2_journal_init_dev()
1201 	struct buffer_head *bh;  in jbd2_journal_init_inode()  local
1247 	bh = getblk_unmovable(journal->j_dev, blocknr, journal->j_blocksize);  in jbd2_journal_init_inode()
1248 	if (!bh) {  in jbd2_journal_init_inode()
1254 	journal->j_sb_buffer = bh;  in jbd2_journal_init_inode()
1255 	journal->j_superblock = (journal_superblock_t *)bh->b_data;  in jbd2_journal_init_inode()
1272 	struct buffer_head *bh = journal->j_sb_buffer;  in journal_fail_superblock()  local
1273 	brelse(bh);  in journal_fail_superblock()
1343 	struct buffer_head *bh = journal->j_sb_buffer;  in jbd2_write_superblock()  local
1350 	lock_buffer(bh);  in jbd2_write_superblock()
1351 	if (buffer_write_io_error(bh)) {  in jbd2_write_superblock()
1363 		clear_buffer_write_io_error(bh);  in jbd2_write_superblock()
1364 		set_buffer_uptodate(bh);  in jbd2_write_superblock()
1367 	get_bh(bh);  in jbd2_write_superblock()
1368 	bh->b_end_io = end_buffer_write_sync;  in jbd2_write_superblock()
1369 	ret = submit_bh(write_op, bh);  in jbd2_write_superblock()
1370 	wait_on_buffer(bh);  in jbd2_write_superblock()
1371 	if (buffer_write_io_error(bh)) {  in jbd2_write_superblock()
1372 		clear_buffer_write_io_error(bh);  in jbd2_write_superblock()
1373 		set_buffer_uptodate(bh);  in jbd2_write_superblock()
1485 	struct buffer_head *bh;  in journal_get_superblock()  local
1489 	bh = journal->j_sb_buffer;  in journal_get_superblock()
1491 	J_ASSERT(bh != NULL);  in journal_get_superblock()
1492 	if (!buffer_uptodate(bh)) {  in journal_get_superblock()
1493 		ll_rw_block(READ, 1, &bh);  in journal_get_superblock()
1494 		wait_on_buffer(bh);  in journal_get_superblock()
1495 		if (!buffer_uptodate(bh)) {  in journal_get_superblock()
1502 	if (buffer_verified(bh))  in journal_get_superblock()
1585 	set_buffer_verified(bh);  in journal_get_superblock()
2467 struct journal_head *jbd2_journal_add_journal_head(struct buffer_head *bh)  in jbd2_journal_add_journal_head()  argument
2473 	if (!buffer_jbd(bh))  in jbd2_journal_add_journal_head()
2476 	jbd_lock_bh_journal_head(bh);  in jbd2_journal_add_journal_head()
2477 	if (buffer_jbd(bh)) {  in jbd2_journal_add_journal_head()
2478 		jh = bh2jh(bh);  in jbd2_journal_add_journal_head()
2480 		J_ASSERT_BH(bh,  in jbd2_journal_add_journal_head()
2481 			(atomic_read(&bh->b_count) > 0) ||  in jbd2_journal_add_journal_head()
2482 			(bh->b_page && bh->b_page->mapping));  in jbd2_journal_add_journal_head()
2485 			jbd_unlock_bh_journal_head(bh);  in jbd2_journal_add_journal_head()
2491 		set_buffer_jbd(bh);  in jbd2_journal_add_journal_head()
2492 		bh->b_private = jh;  in jbd2_journal_add_journal_head()
2493 		jh->b_bh = bh;  in jbd2_journal_add_journal_head()
2494 		get_bh(bh);  in jbd2_journal_add_journal_head()
2495 		BUFFER_TRACE(bh, "added journal_head");  in jbd2_journal_add_journal_head()
2498 	jbd_unlock_bh_journal_head(bh);  in jbd2_journal_add_journal_head()
2501 	return bh->b_private;  in jbd2_journal_add_journal_head()
2508 struct journal_head *jbd2_journal_grab_journal_head(struct buffer_head *bh)  in jbd2_journal_grab_journal_head()  argument
2512 	jbd_lock_bh_journal_head(bh);  in jbd2_journal_grab_journal_head()
2513 	if (buffer_jbd(bh)) {  in jbd2_journal_grab_journal_head()
2514 		jh = bh2jh(bh);  in jbd2_journal_grab_journal_head()
2517 	jbd_unlock_bh_journal_head(bh);  in jbd2_journal_grab_journal_head()
2521 static void __journal_remove_journal_head(struct buffer_head *bh)  in __journal_remove_journal_head()  argument
2523 	struct journal_head *jh = bh2jh(bh);  in __journal_remove_journal_head()
2530 	J_ASSERT_BH(bh, buffer_jbd(bh));  in __journal_remove_journal_head()
2531 	J_ASSERT_BH(bh, jh2bh(jh) == bh);  in __journal_remove_journal_head()
2532 	BUFFER_TRACE(bh, "remove journal_head");  in __journal_remove_journal_head()
2535 		jbd2_free(jh->b_frozen_data, bh->b_size);  in __journal_remove_journal_head()
2539 		jbd2_free(jh->b_committed_data, bh->b_size);  in __journal_remove_journal_head()
2541 	bh->b_private = NULL;  in __journal_remove_journal_head()
2543 	clear_buffer_jbd(bh);  in __journal_remove_journal_head()
2553 	struct buffer_head *bh = jh2bh(jh);  in jbd2_journal_put_journal_head()  local
2555 	jbd_lock_bh_journal_head(bh);  in jbd2_journal_put_journal_head()
2559 		__journal_remove_journal_head(bh);  in jbd2_journal_put_journal_head()
2560 		jbd_unlock_bh_journal_head(bh);  in jbd2_journal_put_journal_head()
2561 		__brelse(bh);  in jbd2_journal_put_journal_head()
2563 		jbd_unlock_bh_journal_head(bh);  in jbd2_journal_put_journal_head()