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Date: Mon, 18 Mar 2002 12:29:17 -0500
From: Mark Mielke <mark@mark.mielke.cc>
To: Jeff Garzik <jgarzik@mandrakesoft.com>
Cc: Jan Hudec <bulb@ucw.cz>, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: fadvise syscall?
Message-ID: <20020318122917.A27252@mark.mielke.cc>
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On Mon, Mar 18, 2002 at 05:08:02AM -0500, Jeff Garzik wrote:
> Jan Hudec wrote:
> >Then posix_fadvise interface can be implemented in libc using fcntl.
> It is far better for future-proofing the interface IMO if fadvise is 
> implementing directly.  Hints are less important than open O_xxx flags 
> or F_xxx flags, because an implementation can safely ignore 100% of the 
> fadvise hints, if it so chooses.  One cannot say the same thing for 
> open/fcntl flags.

There is nothing to say that fadvise(...) shouldn't call fcntl(F_ADVISE, ...).

If it fits in with open(), then it might just fit in with F_GETFL /
F_SETFL as well.

I prefer generalization, especially for non-critical functions that should
not be called 1,000,000 a second, such as fadvise().

mark

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