779 ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_init_read()  argument
788 	if (!pgio->pg_lseg)  in ff_layout_pg_init_read()
789 		pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_init_read()
796 	if (pgio->pg_lseg == NULL)  in ff_layout_pg_init_read()
799 	ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx);  in ff_layout_pg_init_read()
802 	mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx);  in ff_layout_pg_init_read()
804 	pgio->pg_mirror_idx = ds_idx;  in ff_layout_pg_init_read()
807 	pgm = &pgio->pg_mirrors[0];  in ff_layout_pg_init_read()
812 	pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_read()
813 	pgio->pg_lseg = NULL;  in ff_layout_pg_init_read()
814 	nfs_pageio_reset_read_mds(pgio);  in ff_layout_pg_init_read()
818 ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_init_write()  argument
828 	if (!pgio->pg_lseg)  in ff_layout_pg_init_write()
829 		pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_init_write()
836 	if (pgio->pg_lseg == NULL)  in ff_layout_pg_init_write()
839 	nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq);  in ff_layout_pg_init_write()
840 	status = ff_layout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS);  in ff_layout_pg_init_write()
845 	if (WARN_ON_ONCE(pgio->pg_mirror_count !=  in ff_layout_pg_init_write()
846 	    FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg)))  in ff_layout_pg_init_write()
849 	for (i = 0; i < pgio->pg_mirror_count; i++) {  in ff_layout_pg_init_write()
850 		ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true);  in ff_layout_pg_init_write()
853 		pgm = &pgio->pg_mirrors[i];  in ff_layout_pg_init_write()
854 		mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i);  in ff_layout_pg_init_write()
861 	pnfs_put_lseg(pgio->pg_lseg);  in ff_layout_pg_init_write()
862 	pgio->pg_lseg = NULL;  in ff_layout_pg_init_write()
863 	nfs_pageio_reset_write_mds(pgio);  in ff_layout_pg_init_write()
867 ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio,  in ff_layout_pg_get_mirror_count_write()  argument
870 	if (!pgio->pg_lseg)  in ff_layout_pg_get_mirror_count_write()
871 		pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,  in ff_layout_pg_get_mirror_count_write()
877 	if (pgio->pg_lseg)  in ff_layout_pg_get_mirror_count_write()
878 		return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg);  in ff_layout_pg_get_mirror_count_write()
881 	nfs_pageio_reset_write_mds(pgio);  in ff_layout_pg_get_mirror_count_write()