/* release allocated block */
static void
testfs_put_block_freemap(struct super_block *sb, int block_nr)
{
assert(sb->block_freemap);
bitmap_unmark(sb->block_freemap, block_nr);
testfs_write_block_freemap(sb, block_nr);
}
/* return free block number or negative value */
static int testfs_get_block_freemap(struct super_block *sb) {
u_int32_t index;
int ret;
assert(sb->block_freemap);
ret = bitmap_alloc(sb->block_freemap, &index);
if (ret < 0)
return ret;
testfs_write_block_freemap(sb, index);
return index;
}