179 				   struct buffer_head *bh,  in ext4_init_block_bitmap()  argument
189 	J_ASSERT_BH(bh, buffer_locked(bh));  in ext4_init_block_bitmap()
208 	memset(bh->b_data, 0, sb->s_blocksize);  in ext4_init_block_bitmap()
212 		ext4_set_bit(bit, bh->b_data);  in ext4_init_block_bitmap()
222 		ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
226 		ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
232 			ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
241 			     sb->s_blocksize * 8, bh->b_data);  in ext4_init_block_bitmap()
242 	ext4_block_bitmap_csum_set(sb, block_group, gdp, bh);  in ext4_init_block_bitmap()
278 					     struct buffer_head **bh)  in ext4_get_group_desc()  argument
305 	if (bh)  in ext4_get_group_desc()
306 		*bh = sbi->s_group_desc[group_desc];  in ext4_get_group_desc()
317 					    struct buffer_head *bh)  in ext4_valid_block_bitmap()  argument
339 	if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))  in ext4_valid_block_bitmap()
346 	if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))  in ext4_valid_block_bitmap()
353 	next_zero_bit = ext4_find_next_zero_bit(bh->b_data,  in ext4_valid_block_bitmap()
366 				       struct buffer_head *bh)  in ext4_validate_block_bitmap()  argument
372 	if (buffer_verified(bh))  in ext4_validate_block_bitmap()
376 	blk = ext4_valid_block_bitmap(sb, desc, block_group, bh);  in ext4_validate_block_bitmap()
388 			desc, bh))) {  in ext4_validate_block_bitmap()
397 	set_buffer_verified(bh);  in ext4_validate_block_bitmap()
415 	struct buffer_head *bh;  in ext4_read_block_bitmap_nowait()  local
422 	bh = sb_getblk(sb, bitmap_blk);  in ext4_read_block_bitmap_nowait()
423 	if (unlikely(!bh)) {  in ext4_read_block_bitmap_nowait()
430 	if (bitmap_uptodate(bh))  in ext4_read_block_bitmap_nowait()
433 	lock_buffer(bh);  in ext4_read_block_bitmap_nowait()
434 	if (bitmap_uptodate(bh)) {  in ext4_read_block_bitmap_nowait()
435 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
442 		err = ext4_init_block_bitmap(sb, bh, block_group, desc);  in ext4_read_block_bitmap_nowait()
443 		set_bitmap_uptodate(bh);  in ext4_read_block_bitmap_nowait()
444 		set_buffer_uptodate(bh);  in ext4_read_block_bitmap_nowait()
446 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
449 		return bh;  in ext4_read_block_bitmap_nowait()
452 	if (buffer_uptodate(bh)) {  in ext4_read_block_bitmap_nowait()
457 		set_bitmap_uptodate(bh);  in ext4_read_block_bitmap_nowait()
458 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
464 	set_buffer_new(bh);  in ext4_read_block_bitmap_nowait()
466 	bh->b_end_io = ext4_end_bitmap_read;  in ext4_read_block_bitmap_nowait()
467 	get_bh(bh);  in ext4_read_block_bitmap_nowait()
468 	submit_bh(READ | REQ_META | REQ_PRIO, bh);  in ext4_read_block_bitmap_nowait()
469 	return bh;  in ext4_read_block_bitmap_nowait()
471 	ext4_validate_block_bitmap(sb, desc, block_group, bh);  in ext4_read_block_bitmap_nowait()
472 	if (buffer_verified(bh))  in ext4_read_block_bitmap_nowait()
473 		return bh;  in ext4_read_block_bitmap_nowait()
474 	put_bh(bh);  in ext4_read_block_bitmap_nowait()
480 			   struct buffer_head *bh)  in ext4_wait_block_bitmap()  argument
484 	if (!buffer_new(bh))  in ext4_wait_block_bitmap()
489 	wait_on_buffer(bh);  in ext4_wait_block_bitmap()
490 	if (!buffer_uptodate(bh)) {  in ext4_wait_block_bitmap()
493 			   block_group, (unsigned long long) bh->b_blocknr);  in ext4_wait_block_bitmap()
496 	clear_buffer_new(bh);  in ext4_wait_block_bitmap()
498 	ext4_validate_block_bitmap(sb, desc, block_group, bh);  in ext4_wait_block_bitmap()
500 	return !buffer_verified(bh);  in ext4_wait_block_bitmap()
506 	struct buffer_head *bh;  in ext4_read_block_bitmap()  local
508 	bh = ext4_read_block_bitmap_nowait(sb, block_group);  in ext4_read_block_bitmap()
509 	if (!bh)  in ext4_read_block_bitmap()
511 	if (ext4_wait_block_bitmap(sb, block_group, bh)) {  in ext4_read_block_bitmap()
512 		put_bh(bh);  in ext4_read_block_bitmap()
515 	return bh;  in ext4_read_block_bitmap()