ceph_inode_set_size
check_cap = ceph_inode_set_size(inode, pos+copied);
if (ceph_inode_set_size(inode, endoff))
if (ceph_inode_set_size(inode, pos))
check_caps = ceph_inode_set_size(inode, pos);
if (ceph_inode_set_size(dst_inode, dst_off) ||
extern bool ceph_inode_set_size(struct inode *inode, loff_t size);