>>>>> "Trond" == Trond Myklebust <[EMAIL PROTECTED]> writes:
Trond> to den 11.08.2005 Klokka 09:48 (+1000) skreiv Peter Chubb: >> Hi, The LTP test fcntl23 is failing. It does, in essence, fd = >> open(xxx, O_RDWR|O_CREAT, 0777); if (fcntl(fd, F_SETLEASE, F_RDLCK) >> == -1) fail; >> >> fcntl always returns EAGAIN here. The manual page says that a read >> lease causes notification when `another process' opens the file for >> writing or truncates it. The kernel implements `any process' >> (including the current one). >> >> Which semantics are correct? Personally I think that what the >> kernel implements is correct (you can't get a read lease unsless >> there are no writers _at_ _all_) Trond> A read lease should mean that there are no writers at all. Trond> If we were to allow the current process to open for write, then Trond> that would still mean that nobody else can get a lease. In Trond> effect you have been granted a lease with exclusive semantics Trond> (i.e. a write lease). You might as well request that instead of Trond> pretending it is a read lease. So the manual page is wrong. Fine. -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au The technical we do immediately, the political takes *forever* - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
