Date: Sun, 10 Oct 1999 09:24:55 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Peter Wemm <peter@netplex.com.au>, "Daniel C. Sobral" <dcs@newsguy.com>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/vm vm_swap.c Message-ID: <199910101624.JAA16685@apollo.backplane.com> References: <15397.939571805@critter.freebsd.dk>
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:>useable as anything else as this strategy routine doesn't actually work for
:>normal device access. libkvm doesn't use it, at least not for a very long
:>time. IMHO, the strategy routine should be moved elsewhere for the VM swap
:>code to use as a subroutine and the whole "device" should be deep-six'ed.
:
:But isn't this really just a "striping" function which could be done
:equally well by ccd or vinum ?
:
:--
:Poul-Henning Kamp FreeBSD coreteam member
:phk@FreeBSD.ORG "Real hackers run -current on their laptop."
It's similar, but neither ccd nor vinum can guarentee non-blocking
operation in low-memory situations. And, anyhow, the swapper is my
baby. We can probably remove the external user accessible /dev/drum
but we aren't going to be messing with it any more then that.
The current swapper code (along with VN) is also being used as a test bed
for vm_pager_strategy(), so I would appreciate it if nobody screws around
with it any more. This will eventually lead to direct vm_object based I/O.
-Matt
Matthew Dillon
<dillon@backplane.com>
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