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Subject: Re: [PATCH] Lightweight userspace semaphores...
To: torvalds@transmeta.com (Linus Torvalds)
Date: Mon, 25 Feb 2002 17:31:26 +0000 (GMT)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox), rusty@rustcorp.com.au (Rusty Russell),
        mingo@elte.hu, matthew@hairy.beasts.org (Matthew Kirkwood),
        bcrl@redhat.com (Benjamin LaHaise), david@mysql.com (David Axmark),
        wli@holomorphy.com (William Lee Irwin III),
        linux-kernel@vger.kernel.org
In-Reply-To: <Pine.LNX.4.33.0202250905090.3392-100000@home.transmeta.com> from "Linus Torvalds" at Feb 25, 2002 09:06:15 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> > unlink()
> 
> Sure, but that, together with making up a unique temporary name etc just
> adds extra overhead for no actual gain.

As opposed to adding special cases to the kernel which are unswappable and
stand to tangle up bits of the generic vfs - eg we would have a vma with
a vm_file but that file would not be in the dcache ?

Is it really worth it. For temporary files unix has never adopted a tmpfile()
syscall because nobody has ever found mkstemp() a paticularly critical path
that justified it
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