183 				   struct buffer_head *bh,  in ext4_init_block_bitmap()  argument
191 	ASSERT(buffer_locked(bh));  in ext4_init_block_bitmap()
199 	memset(bh->b_data, 0, sb->s_blocksize);  in ext4_init_block_bitmap()
202 	if ((bit_max >> 3) >= bh->b_size)  in ext4_init_block_bitmap()
206 		ext4_set_bit(bit, bh->b_data);  in ext4_init_block_bitmap()
213 		ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
217 		ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
223 			ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);  in ext4_init_block_bitmap()
232 			     sb->s_blocksize * 8, bh->b_data);  in ext4_init_block_bitmap()
267 					     struct buffer_head **bh)  in ext4_get_group_desc()  argument
277 				   sb, block_group, bh);  in ext4_get_group_desc()
305 	if (bh)  in ext4_get_group_desc()
306 		*bh = bh_p;  in ext4_get_group_desc()
312 						    struct buffer_head *bh)  in ext4_valid_block_bitmap_padding()  argument
321 	next_zero_bit = ext4_find_next_zero_bit(bh->b_data, bitmap_size, offset);  in ext4_valid_block_bitmap_padding()
351 					    struct buffer_head *bh)  in ext4_valid_block_bitmap()  argument
375 	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))  in ext4_valid_block_bitmap()
383 	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))  in ext4_valid_block_bitmap()
393 	next_zero_bit = ext4_find_next_zero_bit(bh->b_data,  in ext4_valid_block_bitmap()
406 				      struct buffer_head *bh)  in ext4_validate_block_bitmap()  argument
416 	if (buffer_verified(bh))  in ext4_validate_block_bitmap()
422 	if (buffer_verified(bh))  in ext4_validate_block_bitmap()
424 	if (unlikely(!ext4_block_bitmap_csum_verify(sb, desc, bh) ||  in ext4_validate_block_bitmap()
432 	blk = ext4_valid_block_bitmap(sb, desc, block_group, bh);  in ext4_validate_block_bitmap()
441 	blk = ext4_valid_block_bitmap_padding(sb, block_group, bh);  in ext4_validate_block_bitmap()
450 	set_buffer_verified(bh);  in ext4_validate_block_bitmap()
473 	struct buffer_head *bh;  in ext4_read_block_bitmap_nowait()  local
492 	bh = sb_getblk(sb, bitmap_blk);  in ext4_read_block_bitmap_nowait()
493 	if (unlikely(!bh)) {  in ext4_read_block_bitmap_nowait()
500 	if (ignore_locked && buffer_locked(bh)) {  in ext4_read_block_bitmap_nowait()
502 		put_bh(bh);  in ext4_read_block_bitmap_nowait()
506 	if (bitmap_uptodate(bh))  in ext4_read_block_bitmap_nowait()
509 	lock_buffer(bh);  in ext4_read_block_bitmap_nowait()
510 	if (bitmap_uptodate(bh)) {  in ext4_read_block_bitmap_nowait()
511 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
519 			unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
525 		err = ext4_init_block_bitmap(sb, bh, block_group, desc);  in ext4_read_block_bitmap_nowait()
528 			unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
533 		set_bitmap_uptodate(bh);  in ext4_read_block_bitmap_nowait()
534 		set_buffer_uptodate(bh);  in ext4_read_block_bitmap_nowait()
535 		set_buffer_verified(bh);  in ext4_read_block_bitmap_nowait()
537 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
538 		return bh;  in ext4_read_block_bitmap_nowait()
541 	if (buffer_uptodate(bh)) {  in ext4_read_block_bitmap_nowait()
546 		set_bitmap_uptodate(bh);  in ext4_read_block_bitmap_nowait()
547 		unlock_buffer(bh);  in ext4_read_block_bitmap_nowait()
553 	set_buffer_new(bh);  in ext4_read_block_bitmap_nowait()
555 	ext4_read_bh_nowait(bh, REQ_META | REQ_PRIO |  in ext4_read_block_bitmap_nowait()
559 	return bh;  in ext4_read_block_bitmap_nowait()
561 	err = ext4_validate_block_bitmap(sb, desc, block_group, bh);  in ext4_read_block_bitmap_nowait()
564 	return bh;  in ext4_read_block_bitmap_nowait()
566 	put_bh(bh);  in ext4_read_block_bitmap_nowait()
572 			   struct buffer_head *bh)  in ext4_wait_block_bitmap()  argument
577 				   sb, block_group, bh);  in ext4_wait_block_bitmap()
579 	if (!buffer_new(bh))  in ext4_wait_block_bitmap()
584 	wait_on_buffer(bh);  in ext4_wait_block_bitmap()
585 	if (!buffer_uptodate(bh)) {  in ext4_wait_block_bitmap()
588 			       block_group, (unsigned long long) bh->b_blocknr);  in ext4_wait_block_bitmap()
593 	clear_buffer_new(bh);  in ext4_wait_block_bitmap()
595 	return ext4_validate_block_bitmap(sb, desc, block_group, bh);  in ext4_wait_block_bitmap()
601 	struct buffer_head *bh;  in ext4_read_block_bitmap()  local
604 	bh = ext4_read_block_bitmap_nowait(sb, block_group, false);  in ext4_read_block_bitmap()
605 	if (IS_ERR(bh))  in ext4_read_block_bitmap()
606 		return bh;  in ext4_read_block_bitmap()
607 	err = ext4_wait_block_bitmap(sb, block_group, bh);  in ext4_read_block_bitmap()
609 		put_bh(bh);  in ext4_read_block_bitmap()
612 	return bh;  in ext4_read_block_bitmap()