45 	struct buffer_head	*bh, *head;  in xfs_count_page_state()  local
49 	bh = head = page_buffers(page);  in xfs_count_page_state()
51 		if (buffer_unwritten(bh))  in xfs_count_page_state()
53 		else if (buffer_delay(bh))  in xfs_count_page_state()
55 	} while ((bh = bh->b_this_page) != head);  in xfs_count_page_state()
81 	struct buffer_head	*bh, *next;  in xfs_destroy_ioend()  local
83 	for (bh = ioend->io_buffer_head; bh; bh = next) {  in xfs_destroy_ioend()
84 		next = bh->b_private;  in xfs_destroy_ioend()
85 		bh->b_end_io(bh, !ioend->io_error);  in xfs_destroy_ioend()
384 	struct buffer_head	*bh)  in xfs_alloc_ioend_bio()  argument
386 	int			nvecs = bio_get_nr_vecs(bh->b_bdev);  in xfs_alloc_ioend_bio()
390 	bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);  in xfs_alloc_ioend_bio()
391 	bio->bi_bdev = bh->b_bdev;  in xfs_alloc_ioend_bio()
397 	struct buffer_head	*bh)  in xfs_start_buffer_writeback()  argument
399 	ASSERT(buffer_mapped(bh));  in xfs_start_buffer_writeback()
400 	ASSERT(buffer_locked(bh));  in xfs_start_buffer_writeback()
401 	ASSERT(!buffer_delay(bh));  in xfs_start_buffer_writeback()
402 	ASSERT(!buffer_unwritten(bh));  in xfs_start_buffer_writeback()
404 	mark_buffer_async_write(bh);  in xfs_start_buffer_writeback()
405 	set_buffer_uptodate(bh);  in xfs_start_buffer_writeback()
406 	clear_buffer_dirty(bh);  in xfs_start_buffer_writeback()
438 static inline int xfs_bio_add_buffer(struct bio *bio, struct buffer_head *bh)  in xfs_bio_add_buffer()  argument
440 	return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));  in xfs_bio_add_buffer()
473 	struct buffer_head	*bh;  in xfs_submit_ioend()  local
480 		for (bh = ioend->io_buffer_head; bh; bh = bh->b_private)  in xfs_submit_ioend()
481 			xfs_start_buffer_writeback(bh);  in xfs_submit_ioend()
502 		for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) {  in xfs_submit_ioend()
506 				bio = xfs_alloc_ioend_bio(bh);  in xfs_submit_ioend()
507 			} else if (bh->b_blocknr != lastblock + 1) {  in xfs_submit_ioend()
512 			if (xfs_bio_add_buffer(bio, bh) != bh->b_size) {  in xfs_submit_ioend()
517 			lastblock = bh->b_blocknr;  in xfs_submit_ioend()
535 	struct buffer_head	*bh, *next_bh;  in xfs_cancel_ioend()  local
539 		bh = ioend->io_buffer_head;  in xfs_cancel_ioend()
541 			next_bh = bh->b_private;  in xfs_cancel_ioend()
542 			clear_buffer_async_write(bh);  in xfs_cancel_ioend()
549 				set_buffer_unwritten(bh);  in xfs_cancel_ioend()
550 			unlock_buffer(bh);  in xfs_cancel_ioend()
551 		} while ((bh = next_bh) != NULL);  in xfs_cancel_ioend()
566 	struct buffer_head	*bh,  in xfs_add_to_ioend()  argument
579 		ioend->io_buffer_head = bh;  in xfs_add_to_ioend()
580 		ioend->io_buffer_tail = bh;  in xfs_add_to_ioend()
585 		ioend->io_buffer_tail->b_private = bh;  in xfs_add_to_ioend()
586 		ioend->io_buffer_tail = bh;  in xfs_add_to_ioend()
589 	bh->b_private = NULL;  in xfs_add_to_ioend()
590 	ioend->io_size += bh->b_size;  in xfs_add_to_ioend()
596 	struct buffer_head	*bh,  in xfs_map_buffer()  argument
613 	bh->b_blocknr = bn;  in xfs_map_buffer()
614 	set_buffer_mapped(bh);  in xfs_map_buffer()
620 	struct buffer_head	*bh,  in xfs_map_at_offset()  argument
627 	xfs_map_buffer(inode, bh, imap, offset);  in xfs_map_at_offset()
628 	set_buffer_mapped(bh);  in xfs_map_at_offset()
629 	clear_buffer_delay(bh);  in xfs_map_at_offset()
630 	clear_buffer_unwritten(bh);  in xfs_map_at_offset()
645 	struct buffer_head	*bh;  in xfs_check_page_type()  local
655 	bh = head = page_buffers(page);  in xfs_check_page_type()
657 		if (buffer_unwritten(bh)) {  in xfs_check_page_type()
660 		} else if (buffer_delay(bh)) {  in xfs_check_page_type()
663 		} else if (buffer_dirty(bh) && buffer_mapped(bh)) {  in xfs_check_page_type()
671 	} while ((bh = bh->b_this_page) != head);  in xfs_check_page_type()
691 	struct buffer_head	*bh, *head;  in xfs_convert_page()  local
761 	bh = head = page_buffers(page);  in xfs_convert_page()
765 		if (!buffer_uptodate(bh))  in xfs_convert_page()
767 		if (!(PageUptodate(page) || buffer_uptodate(bh))) {  in xfs_convert_page()
772 		if (buffer_unwritten(bh) || buffer_delay(bh) ||  in xfs_convert_page()
773 		    buffer_mapped(bh)) {  in xfs_convert_page()
774 			if (buffer_unwritten(bh))  in xfs_convert_page()
776 			else if (buffer_delay(bh))  in xfs_convert_page()
787 			lock_buffer(bh);  in xfs_convert_page()
789 				xfs_map_at_offset(inode, bh, imap, offset);  in xfs_convert_page()
790 			xfs_add_to_ioend(inode, bh, offset, type,  in xfs_convert_page()
799 	} while (offset += len, (bh = bh->b_this_page) != head);  in xfs_convert_page()
801 	if (uptodate && bh == head)  in xfs_convert_page()
886 	struct buffer_head	*bh, *head;  in xfs_aops_discard_page()  local
900 	bh = head = page_buffers(page);  in xfs_aops_discard_page()
905 		if (!buffer_delay(bh))  in xfs_aops_discard_page()
921 	} while ((bh = bh->b_this_page) != head);  in xfs_aops_discard_page()
943 	struct buffer_head	*bh, *head;  in xfs_vm_writepage()  local
1049 	bh = head = page_buffers(page);  in xfs_vm_writepage()
1061 		if (!buffer_uptodate(bh))  in xfs_vm_writepage()
1070 		if (!buffer_mapped(bh) && buffer_uptodate(bh)) {  in xfs_vm_writepage()
1075 		if (buffer_unwritten(bh)) {  in xfs_vm_writepage()
1080 		} else if (buffer_delay(bh)) {  in xfs_vm_writepage()
1085 		} else if (buffer_uptodate(bh)) {  in xfs_vm_writepage()
1092 				ASSERT(buffer_mapped(bh));  in xfs_vm_writepage()
1122 			lock_buffer(bh);  in xfs_vm_writepage()
1124 				xfs_map_at_offset(inode, bh, &imap, offset);  in xfs_vm_writepage()
1125 			xfs_add_to_ioend(inode, bh, offset, type, &ioend,  in xfs_vm_writepage()
1133 	} while (offset += len, ((bh = bh->b_this_page) != head));  in xfs_vm_writepage()
1135 	if (uptodate && bh == head)  in xfs_vm_writepage()
1677 	struct buffer_head	*bh, *head;  in xfs_vm_write_failed()  local
1696 	for (bh = head; bh != head || !block_start;  in xfs_vm_write_failed()
1697 	     bh = bh->b_this_page, block_start = block_end,  in xfs_vm_write_failed()
1698 				   block_offset += bh->b_size) {  in xfs_vm_write_failed()
1699 		block_end = block_start + bh->b_size;  in xfs_vm_write_failed()
1709 		if (!buffer_delay(bh))  in xfs_vm_write_failed()
1712 		if (!buffer_new(bh) && block_offset < i_size_read(inode))  in xfs_vm_write_failed()
1716 					   block_offset + bh->b_size);  in xfs_vm_write_failed()
1722 		clear_buffer_delay(bh);  in xfs_vm_write_failed()
1723 		clear_buffer_uptodate(bh);  in xfs_vm_write_failed()
1724 		clear_buffer_mapped(bh);  in xfs_vm_write_failed()
1725 		clear_buffer_new(bh);  in xfs_vm_write_failed()
1726 		clear_buffer_dirty(bh);  in xfs_vm_write_failed()
1887 		struct buffer_head *bh = head;  in xfs_vm_set_page_dirty()  local
1891 				set_buffer_dirty(bh);  in xfs_vm_set_page_dirty()
1892 			bh = bh->b_this_page;  in xfs_vm_set_page_dirty()
1894 		} while (bh != head);  in xfs_vm_set_page_dirty()