96 	struct buffer_head *bh = NULL;  in verify_group_input()  local
127 	else if (!(bh = sb_bread(sb, end - 1)))  in verify_group_input()
169 	brelse(bh);  in verify_group_input()
357 	struct buffer_head *bh;  in bclean()  local
360 	bh = sb_getblk(sb, blk);  in bclean()
361 	if (unlikely(!bh))  in bclean()
363 	BUFFER_TRACE(bh, "get_write_access");  in bclean()
364 	if ((err = ext4_journal_get_write_access(handle, bh))) {  in bclean()
365 		brelse(bh);  in bclean()
366 		bh = ERR_PTR(err);  in bclean()
368 		memset(bh->b_data, 0, sb->s_blocksize);  in bclean()
369 		set_buffer_uptodate(bh);  in bclean()
372 	return bh;  in bclean()
417 		struct buffer_head *bh;  in set_flexbg_block_bitmap()  local
438 		bh = sb_getblk(sb, flex_gd->groups[group].block_bitmap);  in set_flexbg_block_bitmap()
439 		if (unlikely(!bh))  in set_flexbg_block_bitmap()
442 		BUFFER_TRACE(bh, "get_write_access");  in set_flexbg_block_bitmap()
443 		err = ext4_journal_get_write_access(handle, bh);  in set_flexbg_block_bitmap()
448 		ext4_set_bits(bh->b_data, block - start, count2);  in set_flexbg_block_bitmap()
450 		err = ext4_handle_dirty_metadata(handle, NULL, bh);  in set_flexbg_block_bitmap()
453 		brelse(bh);  in set_flexbg_block_bitmap()
485 	struct buffer_head *bh = NULL;  in setup_new_flex_group_blocks()  local
587 		bh = bclean(handle, sb, block);  in setup_new_flex_group_blocks()
588 		if (IS_ERR(bh)) {  in setup_new_flex_group_blocks()
589 			err = PTR_ERR(bh);  in setup_new_flex_group_blocks()
590 			bh = NULL;  in setup_new_flex_group_blocks()
597 			ext4_set_bits(bh->b_data, 0, overhead);  in setup_new_flex_group_blocks()
600 				     sb->s_blocksize * 8, bh->b_data);  in setup_new_flex_group_blocks()
601 		err = ext4_handle_dirty_metadata(handle, NULL, bh);  in setup_new_flex_group_blocks()
604 		brelse(bh);  in setup_new_flex_group_blocks()
616 		bh = bclean(handle, sb, block);  in setup_new_flex_group_blocks()
617 		if (IS_ERR(bh)) {  in setup_new_flex_group_blocks()
618 			err = PTR_ERR(bh);  in setup_new_flex_group_blocks()
619 			bh = NULL;  in setup_new_flex_group_blocks()
624 				     sb->s_blocksize * 8, bh->b_data);  in setup_new_flex_group_blocks()
625 		err = ext4_handle_dirty_metadata(handle, NULL, bh);  in setup_new_flex_group_blocks()
628 		brelse(bh);  in setup_new_flex_group_blocks()
630 	bh = NULL;  in setup_new_flex_group_blocks()
661 	brelse(bh);  in setup_new_flex_group_blocks()
870 	brelse(iloc.bh);  in add_new_gdb()
1073 		struct buffer_head *bh;  in update_backups()  local
1089 		bh = sb_getblk(sb, backup_block);  in update_backups()
1090 		if (unlikely(!bh)) {  in update_backups()
1097 		BUFFER_TRACE(bh, "get_write_access");  in update_backups()
1098 		if ((err = ext4_journal_get_write_access(handle, bh)))  in update_backups()
1100 		lock_buffer(bh);  in update_backups()
1101 		memcpy(bh->b_data, data, size);  in update_backups()
1103 			memset(bh->b_data + size, 0, rest);  in update_backups()
1104 		set_buffer_uptodate(bh);  in update_backups()
1105 		unlock_buffer(bh);  in update_backups()
1106 		err = ext4_handle_dirty_metadata(handle, NULL, bh);  in update_backups()
1109 		brelse(bh);  in update_backups()
1195 	struct buffer_head *bh = sb_getblk(sb, block);  in ext4_get_bitmap()  local
1196 	if (unlikely(!bh))  in ext4_get_bitmap()
1198 	if (!bh_uptodate_or_lock(bh)) {  in ext4_get_bitmap()
1199 		if (bh_submit_read(bh) < 0) {  in ext4_get_bitmap()
1200 			brelse(bh);  in ext4_get_bitmap()
1205 	return bh;  in ext4_get_bitmap()
1213 	struct buffer_head *bh;  in ext4_set_bitmap_checksums()  local
1218 	bh = ext4_get_bitmap(sb, group_data->inode_bitmap);  in ext4_set_bitmap_checksums()
1219 	if (!bh)  in ext4_set_bitmap_checksums()
1221 	ext4_inode_bitmap_csum_set(sb, group, gdp, bh,  in ext4_set_bitmap_checksums()
1223 	brelse(bh);  in ext4_set_bitmap_checksums()
1225 	bh = ext4_get_bitmap(sb, group_data->block_bitmap);  in ext4_set_bitmap_checksums()
1226 	if (!bh)  in ext4_set_bitmap_checksums()
1228 	ext4_block_bitmap_csum_set(sb, group, gdp, bh);  in ext4_set_bitmap_checksums()
1229 	brelse(bh);  in ext4_set_bitmap_checksums()
1712 	struct buffer_head *bh;  in ext4_group_extend()  local
1763 	bh = sb_bread(sb, o_blocks_count + add - 1);  in ext4_group_extend()
1764 	if (!bh) {  in ext4_group_extend()
1768 	brelse(bh);  in ext4_group_extend()
1874 	struct buffer_head *bh;  in ext4_resize_fs()  local
1888 	bh = sb_bread(sb, n_blocks_count - 1);  in ext4_resize_fs()
1889 	if (!bh) {  in ext4_resize_fs()
1893 	brelse(bh);  in ext4_resize_fs()