From: Helge Hafting <helgehaf@idb.hist.no>
To: Ivan Kalvatchev <iive@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: [Patch2] Re: DoS with tmpfs #3
Date: Thu, 09 Aug 2001 08:29:56 +0200 [thread overview]
Message-ID: <3B722DE4.96DA5711@idb.hist.no> (raw)
In-Reply-To: <20010808171702.57332.qmail@web13603.mail.yahoo.com>
Ivan Kalvatchev wrote:
> I didn't look at the chages but i will say this one
> more time. Limiting tmpfs size at fixed amount of
> space will make the bug harder to reproduce but won't
> fix it. The right hack is to limit tmpfs to be with
> freepages.high less than available memory(swap+ram).
> It won't be hard to code.
The problem with this is that tmpfs may be mounted before
swap is initialized, so a little less than
swap+ram will become "a little less than just RAM" anyway.
Or do you propose a dynamic limit, changing as swap
is added/removed? This has problems if some swap is
removed, and suddenly tmpfs usage exceeds its quota.
Helge Hafting
next prev parent reply other threads:[~2001-08-09 6:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-03 16:34 DoS with tmpfs #3 Ivan Kalvatchev
2001-08-04 6:07 ` Rik van Riel
2001-08-04 18:36 ` Chris Wedgwood
2001-08-04 19:53 ` Rik van Riel
2001-08-06 16:28 ` [Patch] " Christoph Rohland
2001-08-06 16:29 ` [Patch-ac] " Christoph Rohland
2001-08-07 9:09 ` [Patch2] " Christoph Rohland
2001-08-08 17:17 ` Ivan Kalvatchev
2001-08-09 6:29 ` Helge Hafting [this message]
2001-08-09 7:08 ` Thoughts on tmpfs and swapfs Riley Williams
2001-08-09 10:22 ` DoS with tmpfs #dynamic Ivan Kalvatchev
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