Date: Sat, 29 Apr 2006 13:35:14 -0500 From: Alan Cox <alc@cs.rice.edu> To: Kris Kennaway <kris@obsecurity.org> Cc: src-committers@freebsd.org, Peter Wemm <peter@wemm.org>, Peter Jeremy <peterjeremy@optushome.com.au>, Nate Lawson <nate@root.org>, cvs-all@freebsd.org, cvs-src@freebsd.org Subject: Re: cvs commit: src/sys/i386/i386 pmap.c Message-ID: <4453B1E2.5060301@cs.rice.edu> In-Reply-To: <20060429182318.GA61575@xor.obsecurity.org> References: <200604281905.k3SJ59MZ008806@repoman.freebsd.org> <20060429024850.GB997@turion.vk2pj.dyndns.org> <4452FB64.7030308@root.org> <200604291021.12379.peter@wemm.org> <20060429182318.GA61575@xor.obsecurity.org>
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Kris Kennaway wrote: > On Sat, Apr 29, 2006 at 10:21:11AM -0700, Peter Wemm wrote: > > >> page of address space by unlinking the head of the ptelist. Freeing a >> page is as simple as storing it on the head. I'm running my laptop >> with that code right now. >> > > I'm running on a couple of machines too (WITNESS + INVARIANTS) under > heavy load; they've been stable, but I've not tried to determine if > the code is doing its job. > > Yesterday's patch had one problem. The vm_page_alloc() call that is only executed under low-memory conditions omits VM_PAGE_WIRED. This could cause a later panic when the page is freed. I e-mailed Peter about this yesterday. I haven't looked to see if he has fixed it yet. Alan
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