Date: Wed, 2 Nov 2005 10:40:17 GMT From: Maxim Konovalov <maxim@macomnet.ru> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/67919: Why nobody take serious to fix this bug? Message-ID: <200511021040.jA2AeHbx077998@freefall.freebsd.org>
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The following reply was made to PR kern/67919; it has been noted by GNATS. From: Maxim Konovalov <maxim@macomnet.ru> To: Uwe Doering <gemini@geminix.org> Cc: Igor Sysoev <is@rambler-co.ru>, "Cai, Quanqing" <caiquanqing@gmail.com>, freebsd-current@freebsd.org, bug-followup@freebsd.org, Edwin Groothuis <edwin@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. -- Maxim Konovalov
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