53 static void buffer_io_error(struct buffer_head *bh)  in buffer_io_error()  argument
57 			bdevname(bh->b_bdev, b),  in buffer_io_error()
58 			(unsigned long long)bh->b_blocknr);  in buffer_io_error()
73 		struct buffer_head *bh, *head;  in ext4_finish_bio()  local
95 		bh = head = page_buffers(page);  in ext4_finish_bio()
103 			if (bh_offset(bh) < bio_start ||  in ext4_finish_bio()
104 			    bh_offset(bh) + bh->b_size > bio_end) {  in ext4_finish_bio()
105 				if (buffer_async_write(bh))  in ext4_finish_bio()
109 			clear_buffer_async_write(bh);  in ext4_finish_bio()
111 				buffer_io_error(bh);  in ext4_finish_bio()
112 		} while ((bh = bh->b_this_page) != head);  in ext4_finish_bio()
377 			      struct buffer_head *bh)  in io_submit_init_bio()  argument
379 	int nvecs = bio_get_nr_vecs(bh->b_bdev);  in io_submit_init_bio()
385 	bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);  in io_submit_init_bio()
386 	bio->bi_bdev = bh->b_bdev;  in io_submit_init_bio()
390 	io->io_next_block = bh->b_blocknr;  in io_submit_init_bio()
397 			    struct buffer_head *bh)  in io_submit_add_bh()  argument
401 	if (io->io_bio && bh->b_blocknr != io->io_next_block) {  in io_submit_add_bh()
406 		ret = io_submit_init_bio(io, bh);  in io_submit_add_bh()
410 	ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh));  in io_submit_add_bh()
411 	if (ret != bh->b_size)  in io_submit_add_bh()
426 	struct buffer_head *bh, *head;  in ext4_bio_write_page()  local
460 	bh = head = page_buffers(page);  in ext4_bio_write_page()
462 		block_start = bh_offset(bh);  in ext4_bio_write_page()
464 			clear_buffer_dirty(bh);  in ext4_bio_write_page()
465 			set_buffer_uptodate(bh);  in ext4_bio_write_page()
468 		if (!buffer_dirty(bh) || buffer_delay(bh) ||  in ext4_bio_write_page()
469 		    !buffer_mapped(bh) || buffer_unwritten(bh)) {  in ext4_bio_write_page()
471 			if (!buffer_mapped(bh))  in ext4_bio_write_page()
472 				clear_buffer_dirty(bh);  in ext4_bio_write_page()
477 		if (buffer_new(bh)) {  in ext4_bio_write_page()
478 			clear_buffer_new(bh);  in ext4_bio_write_page()
479 			unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr);  in ext4_bio_write_page()
481 		set_buffer_async_write(bh);  in ext4_bio_write_page()
483 	} while ((bh = bh->b_this_page) != head);  in ext4_bio_write_page()
485 	bh = head = page_buffers(page);  in ext4_bio_write_page()
499 		if (!buffer_async_write(bh))  in ext4_bio_write_page()
502 				       data_page ? data_page : page, bh);  in ext4_bio_write_page()
512 		clear_buffer_dirty(bh);  in ext4_bio_write_page()
513 	} while ((bh = bh->b_this_page) != head);  in ext4_bio_write_page()
523 			clear_buffer_async_write(bh);  in ext4_bio_write_page()
524 			bh = bh->b_this_page;  in ext4_bio_write_page()
525 		} while (bh != head);  in ext4_bio_write_page()