Date: Wed, 31 Oct 2001 17:43:22 -0800 From: Peter Wemm <peter@wemm.org> To: "David Xu" <davidx@viasoft.com.cn> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: pmap_collect() and PG_UNMANAGED Message-ID: <20011101014322.1954A3808@overcee.netplex.com.au> In-Reply-To: <000f01c1626e$011ac220$ef01a8c0@davidwnt>
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"David Xu" wrote:
> This is a multi-part message in MIME format.
>
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> Content-Type: text/plain;
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>
> Hi,
>
> is there any reason why pmap_collect() in /sys/i386/i386/pmap.c does =
> not
> check PG_UNMANAGED flag? unmanaged page does not have pv_entry =
> associated,
> so call pmap_remove_all() has side effect, PG_MAPPED and PG_WRITEABLE =
> are=20
> roughly cleared.
>
> --
> David Xu
Did you have something like this in mind?
@@ -1729,7 +1729,7 @@
for(i = 0; i < vm_page_array_size; i++) {
m = &vm_page_array[i];
if (m->wire_count || m->hold_count || m->busy ||
- (m->flags & PG_BUSY))
+ (m->flags & (PG_BUSY | PG_UNMANAGED)))
continue;
pmap_remove_all(m);
}
BTW; please stop posting MIME/HTML onto mailing lists.
Cheers,
-Peter
--
Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
"All of this is for nothing if we don't go to the stars" - JMS/B5
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