CIFSSMBPosixLock
stored_rc = CIFSSMBPosixLock(xid, tcon, lck->netfid, lck->pid,
rc = CIFSSMBPosixLock(xid, tcon, netfid,
rc = CIFSSMBPosixLock(xid, tcon, cfile->fid.netfid,
int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,