fs/nfs/pagelist.c

99 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
102 	hdr->req = nfs_list_entry(mirror->pg_list.next);
106 	hdr->good_bytes = mirror->pg_count;
728 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
731 	if (mirror->pg_count > mirror->pg_bsize) {
741 	if (((mirror->pg_count + req->wb_bytes) >> PAGE_SHIFT) *
745 	return min(mirror->pg_bsize - mirror->pg_count, (size_t)req->wb_bytes);
907 static void nfs_pageio_mirror_init(struct nfs_pgio_mirror *mirror,
910 	INIT_LIST_HEAD(&mirror->pg_list);
911 	mirror->pg_bytes_written = 0;
912 	mirror->pg_count = 0;
913 	mirror->pg_bsize = bsize;
914 	mirror->pg_base = 0;
915 	mirror->pg_recoalesce = 0;
987 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
992 	struct list_head *head = &mirror->pg_list;
996 	unsigned int pg_base = offset_in_page(mirror->pg_base);
999 	pagecount = nfs_page_array_len(pg_base, mirror->pg_count);
1050 	nfs_pgio_rpcsetup(hdr, pg_base, mirror->pg_count, desc->pg_ioflags,
1211 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
1215 	if (list_empty(&mirror->pg_list)) {
1220 		mirror->pg_base = req->wb_pgbase;
1221 		mirror->pg_count = 0;
1222 		mirror->pg_recoalesce = 0;
1224 		prev = nfs_list_entry(mirror->pg_list.prev);
1237 	nfs_list_move_request(req, &mirror->pg_list);
1238 	mirror->pg_count += req->wb_bytes;
1247 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
1249 	if (!list_empty(&mirror->pg_list)) {
1253 		if (list_empty(&mirror->pg_list))
1254 			mirror->pg_bytes_written += mirror->pg_count;
1283 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
1316 			if (desc->pg_error < 0 || mirror->pg_recoalesce)
1339 	struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
1343 		list_splice_init(&mirror->pg_list, &head);
1344 		mirror->pg_recoalesce = 0;
1353 				list_splice_tail(&head, &mirror->pg_list);
1354 				mirror->pg_recoalesce = 1;
1359 	} while (mirror->pg_recoalesce);
1383 	struct nfs_pgio_mirror *mirror;
1389 		mirror = nfs_pgio_get_mirror(desc, midx);
1390 		desc->pg_completion_ops->error_cleanup(&mirror->pg_list,
1410 	/* Create the mirror instances first, and fire them off */
1442  * nfs_pageio_complete_mirror - Complete I/O on the current mirror of an
1445  * @mirror_idx: pointer to mirror index
1450 	struct nfs_pgio_mirror *mirror;
1454 	mirror = nfs_pgio_current_mirror(desc);
1458 		if (desc->pg_error < 0 || !mirror->pg_recoalesce)
1533 	struct nfs_pgio_mirror *mirror;
1539 		mirror = nfs_pgio_get_mirror(desc, midx);
1540 		if (!list_empty(&mirror->pg_list)) {
1541 			prev = nfs_list_entry(mirror->pg_list.prev);
1555  * nfs_pageio_stop_mirroring - stop using mirroring (set mirror count to 1)