kern/67919: imagemagicks convert image to movie conversion kills 5.2.1 machine in vnode_pager_putpages

[Edwin Groothuis]

The following reply was made to PR kern/67919; it has been noted by GNATS.

From: Edwin Groothuis <edwin at mavetju.org>
To: freebsd-gnats-submit at FreeBSD.org
Cc:  
Subject: Re: kern/67919: imagemagicks convert image to movie conversion kills 5.2.1 machine in vnode_pager_putpages
Date: Mon, 14 Jun 2004 16:00:35 +1000

 I would like to point to this email on the -stable list:
 	http://lists.freebsd.org/pipermail/freebsd-stable/2004-March/006493.html
 
 From irc:
 
 <tjr> well, i have a vague idea
 <tjr> perhaps the application has mmap()'d in a sparse file
 <tjr> dirtied so many pages that there isn't space on disk for them
 <tjr> then the syncer has gone to flush the dirty pages out to disk..
 <tjr> you could confirm whether or not that's the case fairly easily
 <tjr> create a sparse file that would be too big to fit on disk if it was non-sparse, mmap it in, dirty all the pages
 
 -- 
 Edwin Groothuis      |            Personal website: http://www.mavetju.org
 edwin at mavetju.org    |          Weblog: http://weblog.barnet.com.au/edwin/