253 			     struct nfs4_ff_layout_mirror *mirror, u64 offset,  in ff_layout_track_ds_error()  argument
262 	if (IS_ERR_OR_NULL(mirror->mirror_ds))  in ff_layout_track_ds_error()
274 	nfs4_stateid_copy(&dserr->stateid, &mirror->stateid);  in ff_layout_track_ds_error()
275 	memcpy(&dserr->deviceid, &mirror->mirror_ds->id_node.deviceid,  in ff_layout_track_ds_error()
285 ff_layout_get_mirror_cred(struct nfs4_ff_layout_mirror *mirror, u32 iomode)  in ff_layout_get_mirror_cred()  argument
290 		pcred = &mirror->ro_cred;  in ff_layout_get_mirror_cred()
292 		pcred = &mirror->rw_cred;  in ff_layout_get_mirror_cred()
307 nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror)  in nfs4_ff_layout_select_ds_fh()  argument
310 	return &mirror->fh_versions[0];  in nfs4_ff_layout_select_ds_fh()
314 nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,  in nfs4_ff_layout_select_ds_stateid()  argument
317 	if (nfs4_ff_layout_ds_version(mirror) == 4)  in nfs4_ff_layout_select_ds_stateid()
318 		nfs4_stateid_copy(stateid, &mirror->stateid);  in nfs4_ff_layout_select_ds_stateid()
323 			 struct nfs4_ff_layout_mirror *mirror)  in ff_layout_init_mirror_ds()  argument
325 	if (mirror == NULL)  in ff_layout_init_mirror_ds()
327 	if (mirror->mirror_ds == NULL) {  in ff_layout_init_mirror_ds()
332 				&mirror->devid, lo->plh_lc_cred,  in ff_layout_init_mirror_ds()
338 		if (cmpxchg(&mirror->mirror_ds, NULL, mirror_ds) &&  in ff_layout_init_mirror_ds()
343 	if (IS_ERR(mirror->mirror_ds))  in ff_layout_init_mirror_ds()
354  * @mirror: layout mirror describing the DS to use
358  * selecting a mirror to use and connecting the client to it if it's not
361  * Since we only need a single functioning mirror to satisfy a read, we don't
363  * mirror should result in a LAYOUTRETURN. @fail_return is how we distinguish
370 			  struct nfs4_ff_layout_mirror *mirror,  in nfs4_ff_layout_prepare_ds()  argument
379 	if (!ff_layout_init_mirror_ds(lseg->pls_layout, mirror))  in nfs4_ff_layout_prepare_ds()
382 	ds = mirror->mirror_ds->ds;  in nfs4_ff_layout_prepare_ds()
391 	status = nfs4_pnfs_ds_connect(s, ds, &mirror->mirror_ds->id_node,  in nfs4_ff_layout_prepare_ds()
393 			     mirror->mirror_ds->ds_versions[0].version,  in nfs4_ff_layout_prepare_ds()
394 			     mirror->mirror_ds->ds_versions[0].minor_version);  in nfs4_ff_layout_prepare_ds()
407 		if (mirror->mirror_ds->ds_versions[0].rsize > max_payload)  in nfs4_ff_layout_prepare_ds()
408 			mirror->mirror_ds->ds_versions[0].rsize = max_payload;  in nfs4_ff_layout_prepare_ds()
409 		if (mirror->mirror_ds->ds_versions[0].wsize > max_payload)  in nfs4_ff_layout_prepare_ds()
410 			mirror->mirror_ds->ds_versions[0].wsize = max_payload;  in nfs4_ff_layout_prepare_ds()
415 				 mirror, lseg->pls_range.offset,  in nfs4_ff_layout_prepare_ds()
427 ff_layout_get_ds_cred(struct nfs4_ff_layout_mirror *mirror,  in ff_layout_get_ds_cred()  argument
433 	if (mirror && !mirror->mirror_ds->ds_versions[0].tightly_coupled) {  in ff_layout_get_ds_cred()
434 		cred = ff_layout_get_mirror_cred(mirror, range->iomode);  in ff_layout_get_ds_cred()
445  * @mirror: pointer to the mirror
453 nfs4_ff_find_or_create_ds_client(struct nfs4_ff_layout_mirror *mirror,  in nfs4_ff_find_or_create_ds_client()  argument
456 	switch (mirror->mirror_ds->ds_versions[0].version) {  in nfs4_ff_find_or_create_ds_client()
560 	struct nfs4_ff_layout_mirror *mirror;  in ff_read_layout_has_available_ds()  local
565 		mirror = FF_LAYOUT_COMP(lseg, idx);  in ff_read_layout_has_available_ds()
566 		if (mirror) {  in ff_read_layout_has_available_ds()
567 			if (!mirror->mirror_ds)  in ff_read_layout_has_available_ds()
569 			if (IS_ERR(mirror->mirror_ds))  in ff_read_layout_has_available_ds()
571 			devid = &mirror->mirror_ds->id_node;  in ff_read_layout_has_available_ds()
582 	struct nfs4_ff_layout_mirror *mirror;  in ff_rw_layout_has_available_ds()  local
587 		mirror = FF_LAYOUT_COMP(lseg, idx);  in ff_rw_layout_has_available_ds()
588 		if (!mirror || IS_ERR(mirror->mirror_ds))  in ff_rw_layout_has_available_ds()
590 		if (!mirror->mirror_ds)  in ff_rw_layout_has_available_ds()
592 		devid = &mirror->mirror_ds->id_node;  in ff_rw_layout_has_available_ds()