Date: Sun, 22 Aug 1999 10:58:10 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Maxim Sobolev <sobomax@altavista.net>, current@FreeBSD.ORG Subject: Re: Sync(8) doesn't have any effect on softupdates-enabled filesystem Message-ID: <199908221758.KAA80382@apollo.backplane.com> References: <4136.935343278@critter.freebsd.dk>
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:> structures used internally by softupdates are not condusive to doing a
:> hard-sync.
:
:I gues sync needs to set a flag which makes the sync'er go through all
:buckets with no delay and then wake the sync'ing process afterwards...
:
:--
:Poul-Henning Kamp FreeBSD coreteam member
It won't help. What needs to happen is for the VOP_FSYNC in ffs to
figure out buffer<->buffer dependancies - something which is not being
recorded in the structures currently. Kirk indicated to me in our
discussions a few weeks ago that it would be relatively easy to figure
out *some* of the dependancies and write the buffers out in the correct
order, but not all of them. There are dependancies which are much
more complex and not simply a matter of writing buffers out in any
particular order.
-Matt
Matthew Dillon
<dillon@backplane.com>
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