24 static bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg);
186 static void ff_layout_mark_devid_invalid(struct pnfs_layout_segment *lseg,  in ff_layout_mark_devid_invalid()  argument
190 	if (!ff_layout_has_available_ds(lseg))  in ff_layout_mark_devid_invalid()
191 		pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode,  in ff_layout_mark_devid_invalid()
192 				lseg);  in ff_layout_mark_devid_invalid()
195 static bool ff_layout_mirror_valid(struct pnfs_layout_segment *lseg,  in ff_layout_mirror_valid()  argument
204 			struct pnfs_layout_hdr *lh = lseg->pls_layout;  in ff_layout_mirror_valid()
227 		ff_layout_mark_devid_invalid(lseg, devid);  in ff_layout_mirror_valid()
232 	pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, lseg);  in ff_layout_mirror_valid()
356 nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx)  in nfs4_ff_layout_select_ds_fh()  argument
358 	struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);  in nfs4_ff_layout_select_ds_fh()
361 	if (!ff_layout_mirror_valid(lseg, mirror, false)) {  in nfs4_ff_layout_select_ds_fh()
391 nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,  in nfs4_ff_layout_prepare_ds()  argument
394 	struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);  in nfs4_ff_layout_prepare_ds()
397 	struct inode *ino = lseg->pls_layout->plh_inode;  in nfs4_ff_layout_prepare_ds()
402 	if (!ff_layout_mirror_valid(lseg, mirror, true)) {  in nfs4_ff_layout_prepare_ds()
438 	ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout),  in nfs4_ff_layout_prepare_ds()
439 				 mirror, lseg->pls_range.offset,  in nfs4_ff_layout_prepare_ds()
440 				 lseg->pls_range.length, NFS4ERR_NXIO,  in nfs4_ff_layout_prepare_ds()
442 	if (fail_return || !ff_layout_has_available_ds(lseg))  in nfs4_ff_layout_prepare_ds()
443 		pnfs_error_mark_layout_for_return(ino, lseg);  in nfs4_ff_layout_prepare_ds()
450 ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, u32 ds_idx,  in ff_layout_get_ds_cred()  argument
453 	struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);  in ff_layout_get_ds_cred()
457 		cred = ff_layout_get_mirror_cred(mirror, lseg->pls_range.iomode);  in ff_layout_get_ds_cred()
471 nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg, u32 ds_idx,  in nfs4_ff_find_or_create_ds_client()  argument
474 	struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);  in nfs4_ff_find_or_create_ds_client()
578 static bool ff_read_layout_has_available_ds(struct pnfs_layout_segment *lseg)  in ff_read_layout_has_available_ds()  argument
584 	for (idx = 0; idx < FF_LAYOUT_MIRROR_COUNT(lseg); idx++) {  in ff_read_layout_has_available_ds()
585 		mirror = FF_LAYOUT_COMP(lseg, idx);  in ff_read_layout_has_available_ds()
600 static bool ff_rw_layout_has_available_ds(struct pnfs_layout_segment *lseg)  in ff_rw_layout_has_available_ds()  argument
606 	for (idx = 0; idx < FF_LAYOUT_MIRROR_COUNT(lseg); idx++) {  in ff_rw_layout_has_available_ds()
607 		mirror = FF_LAYOUT_COMP(lseg, idx);  in ff_rw_layout_has_available_ds()
617 	return FF_LAYOUT_MIRROR_COUNT(lseg) != 0;  in ff_rw_layout_has_available_ds()
620 static bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg)  in ff_layout_has_available_ds()  argument
622 	if (lseg->pls_range.iomode == IOMODE_READ)  in ff_layout_has_available_ds()
623 		return  ff_read_layout_has_available_ds(lseg);  in ff_layout_has_available_ds()
625 	return ff_rw_layout_has_available_ds(lseg);  in ff_layout_has_available_ds()
628 bool ff_layout_avoid_mds_available_ds(struct pnfs_layout_segment *lseg)  in ff_layout_avoid_mds_available_ds()  argument
630 	return ff_layout_no_fallback_to_mds(lseg) ||  in ff_layout_avoid_mds_available_ds()
631 	       ff_layout_has_available_ds(lseg);  in ff_layout_avoid_mds_available_ds()
634 bool ff_layout_avoid_read_on_rw(struct pnfs_layout_segment *lseg)  in ff_layout_avoid_read_on_rw()  argument
636 	return lseg->pls_range.iomode == IOMODE_RW &&  in ff_layout_avoid_read_on_rw()
637 	       ff_layout_no_read_on_rw(lseg);  in ff_layout_avoid_read_on_rw()