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Date:      Sat, 9 Sep 2000 08:06:17 +0200 (CEST)
From:      Marius Bendiksen <mbendiks@eunet.no>
To:        Christopher Stein <stein@eecs.harvard.edu>
Cc:        freebsd-fs@FreeBSD.ORG
Subject:   Re: how mmap buffer writes handled?
Message-ID:  <Pine.BSF.4.05.10009090805310.63380-100000@login-1.eunet.no>
In-Reply-To: <Pine.OSF.4.20.0009081112550.25120-100000@wally>

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> dirtied by mmap moved onto the dirty queue? IS this done
> synchronously by some kind of software intercept of the
> page table operations or are the buffers moved from the
> clean to dirty queues in the background?

As I recall, a periodic scan of the "modified" bits of the various page
table entries will be made, and the buffers will be dirtied accordingly
as the scan completes.

Marius



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