PR/38761 CVS commit: src/sys/kern

[Andrew Doran <ad%netbsd.org@localhost>]

The following reply was made to PR kern/38761; it has been noted by GNATS.

From: Andrew Doran <ad%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/38761 CVS commit: src/sys/kern
Date: Mon, 16 Jun 2008 10:02:15 +0000 (UTC)

 Module Name:   src
 Committed By:  ad
 Date:          Mon Jun 16 10:02:15 UTC 2008
 
 Modified Files:
        src/sys/kern: kern_sleepq.c
 
 Log Message:
 PR kern/38761: new (?) race in buffer cache code
 
 sleepq_changepri, sleepq_lendpri: don't let an active sleep queue head become
 empty. The condvar code inspects the queue head without holding the sleep
 queue lock and needs to see a non-empty queue if there are waiters.
 
 
 To generate a diff of this commit:
 cvs rdiff -r1.31 -r1.32 src/sys/kern/kern_sleepq.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.