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()
142 		struct pnfs_block_extent *be, bio_end_io_t end_io,  in do_add_page_to_bio()  argument
146 		container_of(be->be_device, struct pnfs_block_dev, node);  in do_add_page_to_bio()
153 	isect += be->be_v_offset;  in do_add_page_to_bio()
154 	isect -= be->be_f_offset;  in do_add_page_to_bio()
227 	struct pnfs_block_extent be;  in bl_read_pagelist()  local
258 			if (!ext_tree_lookup(bl, isect, &be, false)) {  in bl_read_pagelist()
262 			extent_length = be.be_length - (isect - be.be_f_offset);  in bl_read_pagelist()
275 		if (is_hole(&be)) {  in bl_read_pagelist()
287 						 isect, pages[i], &map, &be,  in bl_read_pagelist()
370 	struct pnfs_block_extent be;  in bl_write_pagelist()  local
403 			if (!ext_tree_lookup(bl, isect, &be, true)) {  in bl_write_pagelist()
408 			extent_length = be.be_length - (isect - be.be_f_offset);  in bl_write_pagelist()
413 					 WRITE, isect, pages[i], &map, &be,  in bl_write_pagelist()
483 static int verify_extent(struct pnfs_block_extent *be,  in verify_extent()  argument
487 		if (be->be_state == PNFS_BLOCK_READWRITE_DATA ||  in verify_extent()
488 		    be->be_state == PNFS_BLOCK_INVALID_DATA)  in verify_extent()
490 		if (be->be_f_offset != lv->start)  in verify_extent()
492 		lv->start += be->be_length;  in verify_extent()
496 	if (be->be_state == PNFS_BLOCK_READWRITE_DATA) {  in verify_extent()
497 		if (be->be_f_offset != lv->start)  in verify_extent()
501 		lv->start += be->be_length;  in verify_extent()
504 	} else if (be->be_state == PNFS_BLOCK_INVALID_DATA) {  in verify_extent()
505 		if (be->be_f_offset != lv->start)  in verify_extent()
507 		lv->start += be->be_length;  in verify_extent()
509 	} else if (be->be_state == PNFS_BLOCK_READ_DATA) {  in verify_extent()
510 		if (be->be_f_offset > lv->start)  in verify_extent()
512 		if (be->be_f_offset < lv->inval)  in verify_extent()
514 		if (be->be_f_offset < lv->cowread)  in verify_extent()
519 		lv->inval = lv->inval + be->be_length;  in verify_extent()
520 		lv->cowread = be->be_f_offset + be->be_length;  in verify_extent()
544 	struct pnfs_block_extent *be;  in bl_alloc_extent()  local
553 	be = kzalloc(sizeof(*be), GFP_NOFS);  in bl_alloc_extent()
554 	if (!be)  in bl_alloc_extent()
561 	be->be_device = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode), &id,  in bl_alloc_extent()
563 	if (!be->be_device)  in bl_alloc_extent()
570 	if (decode_sector_number(&p, &be->be_f_offset) < 0)  in bl_alloc_extent()
572 	if (decode_sector_number(&p, &be->be_length) < 0)  in bl_alloc_extent()
574 	if (decode_sector_number(&p, &be->be_v_offset) < 0)  in bl_alloc_extent()
576 	be->be_state = be32_to_cpup(p++);  in bl_alloc_extent()
578 	error = verify_extent(be, lv);  in bl_alloc_extent()
584 	list_add_tail(&be->be_list, extents);  in bl_alloc_extent()
588 	nfs4_put_deviceid_node(be->be_device);  in bl_alloc_extent()
590 	kfree(be);  in bl_alloc_extent()
661 		struct pnfs_block_extent *be =  in bl_alloc_lseg()  local
664 		list_del(&be->be_list);  in bl_alloc_lseg()
667 			status = ext_tree_insert(bl, be);  in bl_alloc_lseg()
670 			nfs4_put_deviceid_node(be->be_device);  in bl_alloc_lseg()
671 			kfree(be);  in bl_alloc_lseg()