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Date: Thu, 2 Nov 2000 00:12:27 -0800 (PST)
From: Wayne Whitney <whitney@math.berkeley.edu>
Reply-To: whitney@math.berkeley.edu
To: linux-kernel@vger.kernel.org
Subject: Re: [BUG?] two swapping processes freeze 2.4.0-test10 (but not
 2.2.18pre19)
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On Wed, 1 Nov 2000, Wayne Whitney wrote:

> On Wed, 1 Nov 2000, Rik van Riel wrote (in "Re: [BUG] /proc/<pid>/stat
> access stalls badly for swapping process, 2.4.0-test10"):
>
> > 3) combine this with the elevator starvation stuff (ask Jens 
> >    Axboe for blk-7 to alleviate this issue) and you have a 
> >    scenario where processes using /proc/<pid>/stat have the 
> >    possibility to block on multiple processes that are in the 
> >    process of handling a page fault (but are being starved) 

I just tried patching 2.4.0-test10 with Jens Axboe's blk-7 patch for
2.4.0-test10-pre6.  It applies cleanly other than "Hunk #1 succeeded at
855 (offset -20 lines)" on file mm/filemap.c.  Unfortunately, this had no
effect on the behavior I described . . .

Best wishes,
Wayne



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