424 	struct xfs_writepage_ctx	*wpc,  in xfs_imap_valid()  argument
428 	if (offset_fsb < wpc->imap.br_startoff ||  in xfs_imap_valid()
429 	    offset_fsb >= wpc->imap.br_startoff + wpc->imap.br_blockcount)  in xfs_imap_valid()
436 	if (wpc->fork == XFS_COW_FORK)  in xfs_imap_valid()
446 	if (wpc->data_seq != READ_ONCE(ip->i_df.if_seq))  in xfs_imap_valid()
449 	    wpc->cow_seq != READ_ONCE(ip->i_cowfp->if_seq))  in xfs_imap_valid()
464 	struct xfs_writepage_ctx *wpc,  in xfs_convert_blocks()  argument
477 		error = xfs_bmapi_convert_delalloc(ip, wpc->fork, offset_fsb,  in xfs_convert_blocks()
478 				&wpc->imap, wpc->fork == XFS_COW_FORK ?  in xfs_convert_blocks()
479 					&wpc->cow_seq : &wpc->data_seq);  in xfs_convert_blocks()
482 	} while (wpc->imap.br_startoff + wpc->imap.br_blockcount <= offset_fsb);  in xfs_convert_blocks()
489 	struct xfs_writepage_ctx *wpc,  in xfs_map_blocks()  argument
522 	if (xfs_imap_valid(wpc, ip, offset_fsb))  in xfs_map_blocks()
544 		wpc->cow_seq = READ_ONCE(ip->i_cowfp->if_seq);  in xfs_map_blocks()
547 		wpc->fork = XFS_COW_FORK;  in xfs_map_blocks()
555 	if (xfs_imap_valid(wpc, ip, offset_fsb)) {  in xfs_map_blocks()
567 	wpc->data_seq = READ_ONCE(ip->i_df.if_seq);  in xfs_map_blocks()
570 	wpc->fork = XFS_DATA_FORK;  in xfs_map_blocks()
595 	wpc->imap = imap;  in xfs_map_blocks()
596 	trace_xfs_map_blocks_found(ip, offset, count, wpc->fork, &imap);  in xfs_map_blocks()
599 	error = xfs_convert_blocks(wpc, ip, offset_fsb);  in xfs_map_blocks()
608 		if (error == -EAGAIN && wpc->fork == XFS_COW_FORK && !retries++)  in xfs_map_blocks()
619 	if (wpc->fork != XFS_COW_FORK && cow_fsb != NULLFILEOFF &&  in xfs_map_blocks()
620 	    cow_fsb < wpc->imap.br_startoff + wpc->imap.br_blockcount)  in xfs_map_blocks()
621 		wpc->imap.br_blockcount = cow_fsb - wpc->imap.br_startoff;  in xfs_map_blocks()
623 	ASSERT(wpc->imap.br_startoff <= offset_fsb);  in xfs_map_blocks()
624 	ASSERT(wpc->imap.br_startoff + wpc->imap.br_blockcount > offset_fsb);  in xfs_map_blocks()
625 	trace_xfs_map_blocks_alloc(ip, offset, count, wpc->fork, &imap);  in xfs_map_blocks()
760 	struct xfs_writepage_ctx *wpc,  in xfs_add_to_ioend()  argument
772 	sector = xfs_fsb_to_db(ip, wpc->imap.br_startblock) +  in xfs_add_to_ioend()
773 		((offset - XFS_FSB_TO_B(mp, wpc->imap.br_startoff)) >> 9);  in xfs_add_to_ioend()
775 	if (!wpc->ioend ||  in xfs_add_to_ioend()
776 	    wpc->fork != wpc->ioend->io_fork ||  in xfs_add_to_ioend()
777 	    wpc->imap.br_state != wpc->ioend->io_state ||  in xfs_add_to_ioend()
778 	    sector != bio_end_sector(wpc->ioend->io_bio) ||  in xfs_add_to_ioend()
779 	    offset != wpc->ioend->io_offset + wpc->ioend->io_size) {  in xfs_add_to_ioend()
780 		if (wpc->ioend)  in xfs_add_to_ioend()
781 			list_add(&wpc->ioend->io_list, iolist);  in xfs_add_to_ioend()
782 		wpc->ioend = xfs_alloc_ioend(inode, wpc->fork,  in xfs_add_to_ioend()
783 				wpc->imap.br_state, offset, bdev, sector, wbc);  in xfs_add_to_ioend()
786 	merged = __bio_try_merge_page(wpc->ioend->io_bio, page, len, poff,  in xfs_add_to_ioend()
793 		if (bio_full(wpc->ioend->io_bio, len))  in xfs_add_to_ioend()
794 			wpc->ioend->io_bio = xfs_chain_bio(wpc->ioend->io_bio);  in xfs_add_to_ioend()
795 		bio_add_page(wpc->ioend->io_bio, page, len, poff);  in xfs_add_to_ioend()
798 	wpc->ioend->io_size += len;  in xfs_add_to_ioend()
867 	struct xfs_writepage_ctx *wpc,  in xfs_writepage_map()  argument
894 		error = xfs_map_blocks(wpc, inode, file_offset);  in xfs_writepage_map()
897 		if (wpc->imap.br_startblock == HOLESTARTBLOCK)  in xfs_writepage_map()
899 		xfs_add_to_ioend(inode, file_offset, page, iop, wpc, wbc,  in xfs_writepage_map()
904 	ASSERT(wpc->ioend || list_empty(&submit_list));  in xfs_writepage_map()
984 	struct xfs_writepage_ctx *wpc = data;  in xfs_do_writepage()  local
1079 	return xfs_writepage_map(wpc, wbc, inode, page, end_offset);  in xfs_do_writepage()
1092 	struct xfs_writepage_ctx wpc = { };  in xfs_vm_writepage()  local
1095 	ret = xfs_do_writepage(page, wbc, &wpc);  in xfs_vm_writepage()
1096 	if (wpc.ioend)  in xfs_vm_writepage()
1097 		ret = xfs_submit_ioend(wbc, wpc.ioend, ret);  in xfs_vm_writepage()
1106 	struct xfs_writepage_ctx wpc = { };  in xfs_vm_writepages()  local
1110 	ret = write_cache_pages(mapping, wbc, xfs_do_writepage, &wpc);  in xfs_vm_writepages()
1111 	if (wpc.ioend)  in xfs_vm_writepages()
1112 		ret = xfs_submit_ioend(wbc, wpc.ioend, ret);  in xfs_vm_writepages()