58 static int btt_info_write(struct arena_info *arena, struct btt_sb *super)  in btt_info_write()  argument
62 	ret = arena_write_bytes(arena, arena->info2off, super,  in btt_info_write()
67 	return arena_write_bytes(arena, arena->infooff, super,  in btt_info_write()
71 static int btt_info_read(struct arena_info *arena, struct btt_sb *super)  in btt_info_read()  argument
73 	WARN_ON(!super);  in btt_info_read()
74 	return arena_read_bytes(arena, arena->infooff, super,  in btt_info_read()
589 static void parse_arena_meta(struct arena_info *arena, struct btt_sb *super,  in parse_arena_meta()  argument
592 	arena->internal_nlba = le32_to_cpu(super->internal_nlba);  in parse_arena_meta()
593 	arena->internal_lbasize = le32_to_cpu(super->internal_lbasize);  in parse_arena_meta()
594 	arena->external_nlba = le32_to_cpu(super->external_nlba);  in parse_arena_meta()
595 	arena->external_lbasize = le32_to_cpu(super->external_lbasize);  in parse_arena_meta()
596 	arena->nfree = le32_to_cpu(super->nfree);  in parse_arena_meta()
597 	arena->version_major = le16_to_cpu(super->version_major);  in parse_arena_meta()
598 	arena->version_minor = le16_to_cpu(super->version_minor);  in parse_arena_meta()
600 	arena->nextoff = (super->nextoff == 0) ? 0 : (arena_off +  in parse_arena_meta()
601 			le64_to_cpu(super->nextoff));  in parse_arena_meta()
603 	arena->dataoff = arena_off + le64_to_cpu(super->dataoff);  in parse_arena_meta()
604 	arena->mapoff = arena_off + le64_to_cpu(super->mapoff);  in parse_arena_meta()
605 	arena->logoff = arena_off + le64_to_cpu(super->logoff);  in parse_arena_meta()
606 	arena->info2off = arena_off + le64_to_cpu(super->info2off);  in parse_arena_meta()
608 	arena->size = (le64_to_cpu(super->nextoff) > 0)  in parse_arena_meta()
609 		? (le64_to_cpu(super->nextoff))  in parse_arena_meta()
612 	arena->flags = le32_to_cpu(super->flags);  in parse_arena_meta()
619 	struct btt_sb *super;  in discover_arenas()  local
625 	super = kzalloc(sizeof(*super), GFP_KERNEL);  in discover_arenas()
626 	if (!super)  in discover_arenas()
638 		ret = btt_info_read(arena, super);  in discover_arenas()
642 		if (!nd_btt_arena_is_valid(btt->nd_btt, super)) {  in discover_arenas()
656 		parse_arena_meta(arena, super, cur_off);  in discover_arenas()
684 	kfree(super);  in discover_arenas()
691 	kfree(super);  in discover_arenas()
735 	struct btt_sb *super;  in btt_arena_write_layout()  local
747 	super = kzalloc(sizeof(struct btt_sb), GFP_NOIO);  in btt_arena_write_layout()
748 	if (!super)  in btt_arena_write_layout()
751 	strncpy(super->signature, BTT_SIG, BTT_SIG_LEN);  in btt_arena_write_layout()
752 	memcpy(super->uuid, nd_btt->uuid, 16);  in btt_arena_write_layout()
753 	memcpy(super->parent_uuid, parent_uuid, 16);  in btt_arena_write_layout()
754 	super->flags = cpu_to_le32(arena->flags);  in btt_arena_write_layout()
755 	super->version_major = cpu_to_le16(arena->version_major);  in btt_arena_write_layout()
756 	super->version_minor = cpu_to_le16(arena->version_minor);  in btt_arena_write_layout()
757 	super->external_lbasize = cpu_to_le32(arena->external_lbasize);  in btt_arena_write_layout()
758 	super->external_nlba = cpu_to_le32(arena->external_nlba);  in btt_arena_write_layout()
759 	super->internal_lbasize = cpu_to_le32(arena->internal_lbasize);  in btt_arena_write_layout()
760 	super->internal_nlba = cpu_to_le32(arena->internal_nlba);  in btt_arena_write_layout()
761 	super->nfree = cpu_to_le32(arena->nfree);  in btt_arena_write_layout()
762 	super->infosize = cpu_to_le32(sizeof(struct btt_sb));  in btt_arena_write_layout()
763 	super->nextoff = cpu_to_le64(arena->nextoff);  in btt_arena_write_layout()
768 	super->dataoff = cpu_to_le64(arena->dataoff - arena->infooff);  in btt_arena_write_layout()
769 	super->mapoff = cpu_to_le64(arena->mapoff - arena->infooff);  in btt_arena_write_layout()
770 	super->logoff = cpu_to_le64(arena->logoff - arena->infooff);  in btt_arena_write_layout()
771 	super->info2off = cpu_to_le64(arena->info2off - arena->infooff);  in btt_arena_write_layout()
773 	super->flags = 0;  in btt_arena_write_layout()
774 	sum = nd_sb_checksum((struct nd_gen_sb *) super);  in btt_arena_write_layout()
775 	super->checksum = cpu_to_le64(sum);  in btt_arena_write_layout()
777 	ret = btt_info_write(arena, super);  in btt_arena_write_layout()
779 	kfree(super);  in btt_arena_write_layout()