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Date:      Mon, 2 Jan 2012 04:47:39 +0000 (UTC)
From:      Rick Macklem <rmacklem@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org
Subject:   svn commit: r229264 - in stable/8/sys: conf fs/nfsclient
Message-ID:  <201201020447.q024ldHP048338@svn.freebsd.org>

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Author: rmacklem
Date: Mon Jan  2 04:47:38 2012
New Revision: 229264
URL: http://svn.freebsd.org/changeset/base/229264

Log:
  MFC: r227517
  Move the setting of the default value for nm_wcommitsize to
  before the nfs_decode_args() call in the new NFS client, so
  that a specfied command line value won't be overwritten.
  Also, modify the calculation for small values of desiredvnodes
  to avoid an unusually large value or a divide by zero crash.
  It seems that the default value for nm_wcommitsize is very
  conservative and may need to change at some time.

Modified:
  stable/8/sys/fs/nfsclient/nfs_clvfsops.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/conf/ldscript.mips.octeon1.32   (props changed)
  stable/8/sys/conf/ldscript.mips.octeon1.64   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)

Modified: stable/8/sys/fs/nfsclient/nfs_clvfsops.c
==============================================================================
--- stable/8/sys/fs/nfsclient/nfs_clvfsops.c	Mon Jan  2 04:25:25 2012	(r229263)
+++ stable/8/sys/fs/nfsclient/nfs_clvfsops.c	Mon Jan  2 04:47:38 2012	(r229264)
@@ -1218,6 +1218,10 @@ mountnfs(struct nfs_args *argp, struct m
 	nmp->nm_timeo = NFS_TIMEO;
 	nmp->nm_retry = NFS_RETRANS;
 	nmp->nm_readahead = NFS_DEFRAHEAD;
+	if (desiredvnodes >= 11000)
+		nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000);
+	else
+		nmp->nm_wcommitsize = hibufspace / 10;
 
 	nfs_decode_args(mp, nmp, argp, hst, cred, td);
 
@@ -1241,7 +1245,6 @@ mountnfs(struct nfs_args *argp, struct m
 		nmp->nm_rsize = NFS_RSIZE;
 		nmp->nm_readdirsize = NFS_READDIRSIZE;
 	}
-	nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000);
 	nmp->nm_numgrps = NFS_MAXGRPS;
 	nmp->nm_tprintf_delay = nfs_tprintf_delay;
 	if (nmp->nm_tprintf_delay < 0)



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