59 static int btt_info_write(struct arena_info *arena, struct btt_sb *super)  in btt_info_write()  argument
73 	ret = arena_write_bytes(arena, arena->info2off, super,  in btt_info_write()
78 	return arena_write_bytes(arena, arena->infooff, super,  in btt_info_write()
82 static int btt_info_read(struct arena_info *arena, struct btt_sb *super)  in btt_info_read()  argument
84 	return arena_read_bytes(arena, arena->infooff, super,  in btt_info_read()
774 	/* Two pages are reserved for the super block and its copy */  in alloc_arena()
820 static void parse_arena_meta(struct arena_info *arena, struct btt_sb *super,  in parse_arena_meta()  argument
823 	arena->internal_nlba = le32_to_cpu(super->internal_nlba);  in parse_arena_meta()
824 	arena->internal_lbasize = le32_to_cpu(super->internal_lbasize);  in parse_arena_meta()
825 	arena->external_nlba = le32_to_cpu(super->external_nlba);  in parse_arena_meta()
826 	arena->external_lbasize = le32_to_cpu(super->external_lbasize);  in parse_arena_meta()
827 	arena->nfree = le32_to_cpu(super->nfree);  in parse_arena_meta()
828 	arena->version_major = le16_to_cpu(super->version_major);  in parse_arena_meta()
829 	arena->version_minor = le16_to_cpu(super->version_minor);  in parse_arena_meta()
831 	arena->nextoff = (super->nextoff == 0) ? 0 : (arena_off +  in parse_arena_meta()
832 			le64_to_cpu(super->nextoff));  in parse_arena_meta()
834 	arena->dataoff = arena_off + le64_to_cpu(super->dataoff);  in parse_arena_meta()
835 	arena->mapoff = arena_off + le64_to_cpu(super->mapoff);  in parse_arena_meta()
836 	arena->logoff = arena_off + le64_to_cpu(super->logoff);  in parse_arena_meta()
837 	arena->info2off = arena_off + le64_to_cpu(super->info2off);  in parse_arena_meta()
839 	arena->size = (le64_to_cpu(super->nextoff) > 0)  in parse_arena_meta()
840 		? (le64_to_cpu(super->nextoff))  in parse_arena_meta()
843 	arena->flags = le32_to_cpu(super->flags);  in parse_arena_meta()
850 	struct btt_sb *super;  in discover_arenas()  local
856 	super = kzalloc(sizeof(*super), GFP_KERNEL);  in discover_arenas()
857 	if (!super)  in discover_arenas()
869 		ret = btt_info_read(arena, super);  in discover_arenas()
873 		if (!nd_btt_arena_is_valid(btt->nd_btt, super)) {  in discover_arenas()
887 		parse_arena_meta(arena, super, cur_off);  in discover_arenas()
922 	kfree(super);  in discover_arenas()
929 	kfree(super);  in discover_arenas()
973 	struct btt_sb *super;  in btt_arena_write_layout()  local
985 	super = kzalloc(sizeof(struct btt_sb), GFP_NOIO);  in btt_arena_write_layout()
986 	if (!super)  in btt_arena_write_layout()
989 	strncpy(super->signature, BTT_SIG, BTT_SIG_LEN);  in btt_arena_write_layout()
990 	export_uuid(super->uuid, nd_btt->uuid);  in btt_arena_write_layout()
991 	export_uuid(super->parent_uuid, parent_uuid);  in btt_arena_write_layout()
992 	super->flags = cpu_to_le32(arena->flags);  in btt_arena_write_layout()
993 	super->version_major = cpu_to_le16(arena->version_major);  in btt_arena_write_layout()
994 	super->version_minor = cpu_to_le16(arena->version_minor);  in btt_arena_write_layout()
995 	super->external_lbasize = cpu_to_le32(arena->external_lbasize);  in btt_arena_write_layout()
996 	super->external_nlba = cpu_to_le32(arena->external_nlba);  in btt_arena_write_layout()
997 	super->internal_lbasize = cpu_to_le32(arena->internal_lbasize);  in btt_arena_write_layout()
998 	super->internal_nlba = cpu_to_le32(arena->internal_nlba);  in btt_arena_write_layout()
999 	super->nfree = cpu_to_le32(arena->nfree);  in btt_arena_write_layout()
1000 	super->infosize = cpu_to_le32(sizeof(struct btt_sb));  in btt_arena_write_layout()
1001 	super->nextoff = cpu_to_le64(arena->nextoff);  in btt_arena_write_layout()
1006 	super->dataoff = cpu_to_le64(arena->dataoff - arena->infooff);  in btt_arena_write_layout()
1007 	super->mapoff = cpu_to_le64(arena->mapoff - arena->infooff);  in btt_arena_write_layout()
1008 	super->logoff = cpu_to_le64(arena->logoff - arena->infooff);  in btt_arena_write_layout()
1009 	super->info2off = cpu_to_le64(arena->info2off - arena->infooff);  in btt_arena_write_layout()
1011 	super->flags = 0;  in btt_arena_write_layout()
1012 	sum = nd_sb_checksum((struct nd_gen_sb *) super);  in btt_arena_write_layout()
1013 	super->checksum = cpu_to_le64(sum);  in btt_arena_write_layout()
1015 	ret = btt_info_write(arena, super);  in btt_arena_write_layout()
1017 	kfree(super);  in btt_arena_write_layout()