The following reply was made to PR kern/15364; it has been noted by GNATS.

From: Chuck Silvers <chuq@chuq.com>
To: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
Cc: gnats-bugs@NetBSD.org
Subject: Re: kern/15364
Date: Thu, 8 Sep 2005 10:20:25 -0700

 On Thu, Sep 08, 2005 at 05:24:51AM +0900, YAMAMOTO Takashi wrote:
 > > the patch that you sent earlier looks good, I'd just change the
 > > "multiple write resid" check into a KASSERT instead of UVMHIST_LOG.
 > > same for the "no page" panic.
 > 
 > "multiple write" here is normal if the page is re-dirtied.
 > it's the reason why we need a bitmap rather than a byte-count.
 
 oh... yea, for some reason I was thinking you were setting them again if
 the page was dirtied again... nevermind.
 
 I'd be good if you added a comment describing exactly how you're using
 the b_resid field, since it's different that all other uses, and even
 those of us familiar with the code get confused if we're not paying
 attention.  :-)
 
 -Chuck