811 ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_get_read()  argument
815 	pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_get_read()
816 	pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_get_read()
823 	if (IS_ERR(pgio->pg_lseg)) {  in ff_layout_pg_get_read()
824 		pgio->pg_error = PTR_ERR(pgio->pg_lseg);  in ff_layout_pg_get_read()
825 		pgio->pg_lseg = NULL;  in ff_layout_pg_get_read()
830 ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_init_read()  argument
839 	pnfs_generic_pg_check_layout(pgio);  in ff_layout_pg_init_read()
841 	if (!pgio->pg_lseg) {  in ff_layout_pg_init_read()
842 		ff_layout_pg_get_read(pgio, req, false);  in ff_layout_pg_init_read()
843 		if (!pgio->pg_lseg)  in ff_layout_pg_init_read()
846 	if (ff_layout_avoid_read_on_rw(pgio->pg_lseg)) {  in ff_layout_pg_init_read()
847 		ff_layout_pg_get_read(pgio, req, true);  in ff_layout_pg_init_read()
848 		if (!pgio->pg_lseg)  in ff_layout_pg_init_read()
852 	ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx);  in ff_layout_pg_init_read()
854 		if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg))  in ff_layout_pg_init_read()
856 		pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_read()
857 		pgio->pg_lseg = NULL;  in ff_layout_pg_init_read()
863 	mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx);  in ff_layout_pg_init_read()
865 	pgio->pg_mirror_idx = ds_idx;  in ff_layout_pg_init_read()
868 	pgm = &pgio->pg_mirrors[0];  in ff_layout_pg_init_read()
873 	if (pgio->pg_error < 0)  in ff_layout_pg_init_read()
876 	pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_read()
877 	pgio->pg_lseg = NULL;  in ff_layout_pg_init_read()
878 	nfs_pageio_reset_read_mds(pgio);  in ff_layout_pg_init_read()
882 ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_init_write()  argument
893 	pnfs_generic_pg_check_layout(pgio);  in ff_layout_pg_init_write()
894 	if (!pgio->pg_lseg) {  in ff_layout_pg_init_write()
895 		pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_init_write()
902 		if (IS_ERR(pgio->pg_lseg)) {  in ff_layout_pg_init_write()
903 			pgio->pg_error = PTR_ERR(pgio->pg_lseg);  in ff_layout_pg_init_write()
904 			pgio->pg_lseg = NULL;  in ff_layout_pg_init_write()
909 	if (pgio->pg_lseg == NULL)  in ff_layout_pg_init_write()
912 	nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq);  in ff_layout_pg_init_write()
913 	status = ff_layout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS);  in ff_layout_pg_init_write()
918 	if (WARN_ON_ONCE(pgio->pg_mirror_count !=  in ff_layout_pg_init_write()
919 	    FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg)))  in ff_layout_pg_init_write()
922 	for (i = 0; i < pgio->pg_mirror_count; i++) {  in ff_layout_pg_init_write()
923 		ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true);  in ff_layout_pg_init_write()
925 			if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg))  in ff_layout_pg_init_write()
927 			pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_write()
928 			pgio->pg_lseg = NULL;  in ff_layout_pg_init_write()
933 		pgm = &pgio->pg_mirrors[i];  in ff_layout_pg_init_write()
934 		mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i);  in ff_layout_pg_init_write()
941 	pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_write()
942 	pgio->pg_lseg = NULL;  in ff_layout_pg_init_write()
943 	nfs_pageio_reset_write_mds(pgio);  in ff_layout_pg_init_write()
947 ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_get_mirror_count_write()  argument
950 	if (!pgio->pg_lseg) {  in ff_layout_pg_get_mirror_count_write()
951 		pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_get_mirror_count_write()
958 		if (IS_ERR(pgio->pg_lseg)) {  in ff_layout_pg_get_mirror_count_write()
959 			pgio->pg_error = PTR_ERR(pgio->pg_lseg);  in ff_layout_pg_get_mirror_count_write()
960 			pgio->pg_lseg = NULL;  in ff_layout_pg_get_mirror_count_write()
964 	if (pgio->pg_lseg)  in ff_layout_pg_get_mirror_count_write()
965 		return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg);  in ff_layout_pg_get_mirror_count_write()
968 	nfs_pageio_reset_write_mds(pgio);  in ff_layout_pg_get_mirror_count_write()