54 static void buffer_io_error(struct buffer_head *bh)  in buffer_io_error()  argument
57 		       bh->b_bdev,  in buffer_io_error()
58 			(unsigned long long)bh->b_blocknr);  in buffer_io_error()
71 		struct buffer_head *bh, *head;  in ext4_finish_bio()  local
92 		bh = head = page_buffers(page);  in ext4_finish_bio()
100 			if (bh_offset(bh) < bio_start ||  in ext4_finish_bio()
101 			    bh_offset(bh) + bh->b_size > bio_end) {  in ext4_finish_bio()
102 				if (buffer_async_write(bh))  in ext4_finish_bio()
106 			clear_buffer_async_write(bh);  in ext4_finish_bio()
108 				buffer_io_error(bh);  in ext4_finish_bio()
109 		} while ((bh = bh->b_this_page) != head);  in ext4_finish_bio()
358 			      struct buffer_head *bh)  in io_submit_init_bio()  argument
366 	bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);  in io_submit_init_bio()
367 	bio->bi_bdev = bh->b_bdev;  in io_submit_init_bio()
371 	io->io_next_block = bh->b_blocknr;  in io_submit_init_bio()
378 			    struct buffer_head *bh)  in io_submit_add_bh()  argument
382 	if (io->io_bio && bh->b_blocknr != io->io_next_block) {  in io_submit_add_bh()
387 		ret = io_submit_init_bio(io, bh);  in io_submit_add_bh()
391 	ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh));  in io_submit_add_bh()
392 	if (ret != bh->b_size)  in io_submit_add_bh()
394 	wbc_account_io(io->io_wbc, page, bh->b_size);  in io_submit_add_bh()
408 	struct buffer_head *bh, *head;  in ext4_bio_write_page()  local
440 	bh = head = page_buffers(page);  in ext4_bio_write_page()
442 		block_start = bh_offset(bh);  in ext4_bio_write_page()
444 			clear_buffer_dirty(bh);  in ext4_bio_write_page()
445 			set_buffer_uptodate(bh);  in ext4_bio_write_page()
448 		if (!buffer_dirty(bh) || buffer_delay(bh) ||  in ext4_bio_write_page()
449 		    !buffer_mapped(bh) || buffer_unwritten(bh)) {  in ext4_bio_write_page()
451 			if (!buffer_mapped(bh))  in ext4_bio_write_page()
452 				clear_buffer_dirty(bh);  in ext4_bio_write_page()
457 		if (buffer_new(bh)) {  in ext4_bio_write_page()
458 			clear_buffer_new(bh);  in ext4_bio_write_page()
459 			unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr);  in ext4_bio_write_page()
461 		set_buffer_async_write(bh);  in ext4_bio_write_page()
463 	} while ((bh = bh->b_this_page) != head);  in ext4_bio_write_page()
465 	bh = head = page_buffers(page);  in ext4_bio_write_page()
491 		if (!buffer_async_write(bh))  in ext4_bio_write_page()
494 				       data_page ? data_page : page, bh);  in ext4_bio_write_page()
504 		clear_buffer_dirty(bh);  in ext4_bio_write_page()
505 	} while ((bh = bh->b_this_page) != head);  in ext4_bio_write_page()
515 			clear_buffer_async_write(bh);  in ext4_bio_write_page()
516 			bh = bh->b_this_page;  in ext4_bio_write_page()
517 		} while (bh != head);  in ext4_bio_write_page()