From owner-cvs-src-old@FreeBSD.ORG  Fri Aug 14 11:00:45 2009
Return-Path: <owner-cvs-src-old@FreeBSD.ORG>
Delivered-To: cvs-src-old@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id BACB01065746
	for <cvs-src-old@freebsd.org>; Fri, 14 Aug 2009 11:00:45 +0000 (UTC)
	(envelope-from kib@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 910A58FC41
	for <cvs-src-old@freebsd.org>; Fri, 14 Aug 2009 11:00:45 +0000 (UTC)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id n7EB0joQ055884
	for <cvs-src-old@freebsd.org>; Fri, 14 Aug 2009 11:00:45 GMT
	(envelope-from kib@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id n7EB0jB4055883
	for cvs-src-old@freebsd.org; Fri, 14 Aug 2009 11:00:45 GMT
	(envelope-from kib@repoman.freebsd.org)
Message-Id: <200908141100.n7EB0jB4055883@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	kib@repoman.freebsd.org using -f
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Fri, 14 Aug 2009 11:00:38 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/ufs/ffs ffs_softdep.c
X-BeenThere: cvs-src-old@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: **OBSOLETE** CVS commit messages for the src tree
	<cvs-src-old.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src-old>
List-Post: <mailto:cvs-src-old@freebsd.org>
List-Help: <mailto:cvs-src-old-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 14 Aug 2009 11:00:45 -0000

kib         2009-08-14 11:00:38 UTC

  FreeBSD src repository

  Modified files:
    sys/ufs/ffs          ffs_softdep.c 
  Log:
  SVN rev 196206 on 2009-08-14 11:00:38Z by kib
  
  When a UFS node is truncated to the zero length, e.g. by explicit
  truncate(2) call, or by being removed or truncated on open, either
  new softupdate freeblks structure is allocated to track the freed
  blocks of the node, or truncation is done syncronously when too many SU
  dependencies are accumulated. The decision does not take into account
  the allocated freeblks dependencies, allowing workloads that do huge
  amount of truncations to exhaust the kernel memory.
  
  Take the number of allocated freeblks into consideration for
  softdep_slowdown().
  
  Reported by:    pluknet gmail com
  Diagnosed and tested by:        pho
  Approved by:    re (rwatson)
  MFC after:      1 month
  
  Revision  Changes    Path
  1.235     +8 -1      src/sys/ufs/ffs/ffs_softdep.c