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From: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
To: trond.myklebust@fys.uio.no
Cc: phil@fifi.org, theonetruekenny@yahoo.com,
	linux-kernel@vger.kernel.org, nfs@lists.sourceforge.net
Subject: Re: [NFS] Re: [NFS client] NFS locks not released on abnormal process termination
Date: Fri, 09 Jan 2004 11:56:26 +0900	[thread overview]
Message-ID: <1073616986.525187.4709.nullmailer@yamt.dyndns.org> (raw)
In-Reply-To: Your message of "Thu, 8 Jan 2004 17:50:56 +0100 (CET)" <35311.68.42.103.198.1073580656.squirrel@webmail.uio.no>

hi,

> > i think it's problematic because you can't assume the lock was
> > granted on the server and the signaled process might not exit
> > immediately.
> 
> The point is that it is *worse* to assume the lock was not granted,
> since then it will never get cleared on the server.

yes.

> The RPC layer blocks all signals except SIGKILL, so the signalled
> process has no choice but to exit immediately if something gets
> through.

we're talking about interruptible mounts, aren't we?

are you referring to rpc_clnt_sigmask() ?
i think it isn't safe to assume sa_handler isn't changed during
blocking for lock.  consider CLONE_SIGHAND, for example.

YAMAMOTO Takashi


  reply	other threads:[~2004-01-09  2:56 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-06  4:48 [NFS client] NFS locks not released on abnormal process termination Kenny Simpson
2003-12-06 19:50 ` Philippe Troin
2003-12-08  3:39   ` Kenny Simpson
2003-12-08  5:16     ` Trond Myklebust
2003-12-08 17:32       ` Philippe Troin
2003-12-08 19:56         ` Trond Myklebust
2003-12-09  8:15           ` Philippe Troin
2003-12-09  8:42             ` Trond Myklebust
2003-12-09 18:46               ` Philippe Troin
2003-12-10  2:42                 ` Kenny Simpson
2003-12-15  1:04                 ` Kenny Simpson
2003-12-15  1:14                   ` Trond Myklebust
2004-01-08 10:47             ` YAMAMOTO Takashi
2004-01-08 16:50               ` trond.myklebust
2004-01-09  2:56                 ` YAMAMOTO Takashi [this message]
2004-01-09  3:40                   ` [NFS] " trond.myklebust
     [not found] <EE335453C5C57840823404C684F9F61702417581@exmbx01sj.cadence.com>
2003-12-09 19:26 ` Philippe Troin

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