kern/67919: Why nobody take serious to fix this bug?
maxim at macomnet.ru
Wed Nov 2 02:40:19 PST 2005
The following reply was made to PR kern/67919; it has been noted by GNATS.
From: Maxim Konovalov <maxim at macomnet.ru>
To: Uwe Doering <gemini at geminix.org>
Cc: Igor Sysoev <is at rambler-co.ru>, "Cai, Quanqing" <caiquanqing at gmail.com>,
freebsd-current at freebsd.org, bug-followup at freebsd.org,
Edwin Groothuis <edwin at mavetju.org>
Subject: Re: kern/67919: Why nobody take serious to fix this bug?
Date: Wed, 2 Nov 2005 13:34:31 +0300 (MSK)
On Mon, 31 Oct 2005, 16:08+0100, Uwe Doering wrote:
> Maxim Konovalov wrote:
> > [...]
> > > >I was told the patch is incorrect. It works in certain cases but
> > > >incorrect in general.
> > >
> > >Why is it incorrect ? I'm using it for year.
> > Because you can't just throw away any chunk of data (e.g. it could be
> > a meta-data) without a risk to damage a filesystem.
> I wonder, could it really be meta-data? I was under the impression
> that meta-data is a filesystem property and is therefore dealt with
> in the filesystem code, through i/o buffers. Isn't the VM pager
> responsible for handling object contents (files etc.), only? If so,
> it would be unfortunate to throw away pages of data but it certainly
> wouldn't damage the filesystem.
I'm under different (perhaps incorrect) impression.
For the record: ps@ just committed to HEAD a rate limit part of your
patch with a slightly different implementation.
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