From owner-cvs-src@FreeBSD.ORG  Wed Mar  8 23:57:07 2006
Return-Path: <owner-cvs-src@FreeBSD.ORG>
X-Original-To: cvs-src@FreeBSD.org
Delivered-To: cvs-src@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id EAFE516A422;
	Wed,  8 Mar 2006 23:57:07 +0000 (GMT)
	(envelope-from tegge@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id BE69443D46;
	Wed,  8 Mar 2006 23:57:07 +0000 (GMT)
	(envelope-from tegge@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id k28Nv7lB054350;
	Wed, 8 Mar 2006 23:57:07 GMT
	(envelope-from tegge@repoman.freebsd.org)
Received: (from tegge@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id k28Nv7NI054349;
	Wed, 8 Mar 2006 23:57:07 GMT (envelope-from tegge)
Message-Id: <200603082357.k28Nv7NI054349@repoman.freebsd.org>
From: Tor Egge <tegge@FreeBSD.org>
Date: Wed, 8 Mar 2006 23:57:07 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: RELENG_6
Cc: 
Subject: cvs commit: src/sys/kern vfs_bio.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 08 Mar 2006 23:57:08 -0000

tegge       2006-03-08 23:57:07 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/kern             vfs_bio.c 
  Log:
  MFC: For low memory situations, non-VMIO buffers didnt't release pages back
       to the system when brelse() was called with B_RELBUF set on the buffer.
       This could be a problem when the system was low on memory, had many
       buffers on QUEUE_EMPTYKVA and started to traverse directories.  For
       each getnewbuf(), pages were allocated from the system, driving the
       free reserve downwards. For each brelse(), the system put the buffer
       on QUEUE_CLEAN, with B_INVAL set.
  
       This commit changes the semantics of B_RELBUF to also free pages from
       non-VMIO buffers.
  
  Approved by:    re (mux)
  
  Revision   Changes    Path
  1.491.2.6  +5 -0      src/sys/kern/vfs_bio.c