From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: Re: NFS retry on disconnection
Date: 14 May 2002 10:16:59 +0200
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To: Peter =?iso-8859-1?q?=C5strand?= <astrand@lysator.liu.se>
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>>>>> " " == astrand  <Peter> writes:


     > One thing that keeps annoying me is that "intr" only allows
     > interrupting the file operation when a major timeout happens. I

Nope. Major, minor, it all goes through the same code and both can be
interrupted. What can happen, though, is that one process could
actually be waiting on another process.

If, say, they are both waiting to read data from the same page, then
only one process actually does the RPC call. The VFS/MM layers will
put the other process to sleep in the global function 'lock_page()'.
That unfortunately means that it cannot interrupt, since 'lock_page()'
does not do interruptible sleeps.

Cheers,
  Trond

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