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Re: Memory-mapped files

From: Marcus Brinkmann
Subject: Re: Memory-mapped files
Date: Tue, 12 Nov 2002 18:45:20 +0100
User-agent: Mutt/1.4i

On Tue, Nov 12, 2002 at 06:21:04PM +0100, Ludovic Courtès wrote:
> On Tue, Nov 12, 2002 at 01:41:47PM +0100, Marcus Brinkmann wrote:
> > They should fall back to normal read/write if mmap fails.
> Gcc does not actually fall back to normal read/write.  Should we ask them to
> fix that?

I think that would be proper.

> > Why can't you use libpager?
> This is a netfs-based filesystem (tarfs).  So far, I've never felt like
> needing libpager and that's why I'm not using it currently (however, you might
> be able to find good reasons/ways to use it for this particular filesystem?).

mmap works with memory objects, which are paged by the server.  libpager is
a library to manage such external pagers for memory objects.  If you want to
implement io_map in your server, you should feel the need to use libpager ;)


`Rhubarb is no Egyptian god.' GNU
Marcus Brinkmann              The Hurd

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