52 static bool is_hole(struct pnfs_block_extent *be)  in is_hole()  argument
54 	switch (be->be_state) {  in is_hole()
58 		return be->be_tag ? false : true;  in is_hole()
143 		struct pnfs_block_extent *be, bio_end_io_t end_io,  in do_add_page_to_bio()  argument
147 		container_of(be->be_device, struct pnfs_block_dev, node);  in do_add_page_to_bio()
154 	isect += be->be_v_offset;  in do_add_page_to_bio()
155 	isect -= be->be_f_offset;  in do_add_page_to_bio()
192 	struct pnfs_block_extent be;  in bl_mark_devices_unavailable()  local
198 		if (!ext_tree_lookup(bl, isect, &be, rw))  in bl_mark_devices_unavailable()
200 		extent_length = be.be_length - (isect - be.be_f_offset);  in bl_mark_devices_unavailable()
201 		nfs4_mark_deviceid_unavailable(be.be_device);  in bl_mark_devices_unavailable()
253 	struct pnfs_block_extent be;  in bl_read_pagelist()  local
284 			if (!ext_tree_lookup(bl, isect, &be, false)) {  in bl_read_pagelist()
288 			extent_length = be.be_length - (isect - be.be_f_offset);  in bl_read_pagelist()
301 		if (is_hole(&be)) {  in bl_read_pagelist()
313 						 isect, pages[i], &map, &be,  in bl_read_pagelist()
398 	struct pnfs_block_extent be;  in bl_write_pagelist()  local
431 			if (!ext_tree_lookup(bl, isect, &be, true)) {  in bl_write_pagelist()
436 			extent_length = be.be_length - (isect - be.be_f_offset);  in bl_write_pagelist()
441 					 WRITE, isect, pages[i], &map, &be,  in bl_write_pagelist()
524 static int verify_extent(struct pnfs_block_extent *be,  in verify_extent()  argument
528 		if (be->be_state == PNFS_BLOCK_READWRITE_DATA ||  in verify_extent()
529 		    be->be_state == PNFS_BLOCK_INVALID_DATA)  in verify_extent()
531 		if (be->be_f_offset != lv->start)  in verify_extent()
533 		lv->start += be->be_length;  in verify_extent()
537 	if (be->be_state == PNFS_BLOCK_READWRITE_DATA) {  in verify_extent()
538 		if (be->be_f_offset != lv->start)  in verify_extent()
542 		lv->start += be->be_length;  in verify_extent()
545 	} else if (be->be_state == PNFS_BLOCK_INVALID_DATA) {  in verify_extent()
546 		if (be->be_f_offset != lv->start)  in verify_extent()
548 		lv->start += be->be_length;  in verify_extent()
550 	} else if (be->be_state == PNFS_BLOCK_READ_DATA) {  in verify_extent()
551 		if (be->be_f_offset > lv->start)  in verify_extent()
553 		if (be->be_f_offset < lv->inval)  in verify_extent()
555 		if (be->be_f_offset < lv->cowread)  in verify_extent()
560 		lv->inval = lv->inval + be->be_length;  in verify_extent()
561 		lv->cowread = be->be_f_offset + be->be_length;  in verify_extent()
610 	struct pnfs_block_extent *be;  in bl_alloc_extent()  local
619 	be = kzalloc(sizeof(*be), GFP_NOFS);  in bl_alloc_extent()
620 	if (!be)  in bl_alloc_extent()
626 	be->be_device = bl_find_get_deviceid(NFS_SERVER(lo->plh_inode), &id,  in bl_alloc_extent()
628 	if (IS_ERR(be->be_device)) {  in bl_alloc_extent()
629 		error = PTR_ERR(be->be_device);  in bl_alloc_extent()
638 	if (decode_sector_number(&p, &be->be_f_offset) < 0)  in bl_alloc_extent()
640 	if (decode_sector_number(&p, &be->be_length) < 0)  in bl_alloc_extent()
642 	if (decode_sector_number(&p, &be->be_v_offset) < 0)  in bl_alloc_extent()
644 	be->be_state = be32_to_cpup(p++);  in bl_alloc_extent()
646 	error = verify_extent(be, lv);  in bl_alloc_extent()
652 	list_add_tail(&be->be_list, extents);  in bl_alloc_extent()
656 	nfs4_put_deviceid_node(be->be_device);  in bl_alloc_extent()
658 	kfree(be);  in bl_alloc_extent()
729 		struct pnfs_block_extent *be =  in bl_alloc_lseg()  local
732 		list_del(&be->be_list);  in bl_alloc_lseg()
735 			status = ext_tree_insert(bl, be);  in bl_alloc_lseg()
738 			nfs4_put_deviceid_node(be->be_device);  in bl_alloc_lseg()
739 			kfree(be);  in bl_alloc_lseg()