Return-Path: Received: from mail-it0-f68.google.com ([209.85.214.68]:36379 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750854AbdEBQiS (ORCPT ); Tue, 2 May 2017 12:38:18 -0400 Received: by mail-it0-f68.google.com with SMTP id x188so3199746itb.3 for ; Tue, 02 May 2017 09:38:18 -0700 (PDT) From: Trond Myklebust To: linux-nfs@vger.kernel.org Subject: [RFC PATCH 2/5] NFS: Add a mount option to specify number of TCP connections to use Date: Tue, 2 May 2017 12:38:07 -0400 Message-Id: <20170502163812.6211-4-trond.myklebust@primarydata.com> In-Reply-To: <20170502163812.6211-3-trond.myklebust@primarydata.com> References: <20170502163812.6211-1-trond.myklebust@primarydata.com> <20170502163812.6211-2-trond.myklebust@primarydata.com> <20170502163812.6211-3-trond.myklebust@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Allow the user to specify that the client should use multiple connections to the server. For the moment, this functionality will be limited to TCP and to NFSv4.x (x>0). Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 + fs/nfs/super.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 31b26cf1b476..31757a742e9b 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -117,6 +117,7 @@ struct nfs_parsed_mount_data { char *export_path; int port; unsigned short protocol; + unsigned short nconnect; } nfs_server; struct security_mnt_opts lsm_opts; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 54e0f9f2dd94..7eb48934dc79 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -76,6 +76,8 @@ #define NFS_DEFAULT_VERSION 2 #endif +#define NFS_MAX_CONNECTIONS 16 + enum { /* Mount options that take no arguments */ Opt_soft, Opt_hard, @@ -107,6 +109,7 @@ enum { Opt_nfsvers, Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost, Opt_addr, Opt_mountaddr, Opt_clientaddr, + Opt_nconnect, Opt_lookupcache, Opt_fscache_uniq, Opt_local_lock, @@ -179,6 +182,8 @@ static const match_table_t nfs_mount_option_tokens = { { Opt_mounthost, "mounthost=%s" }, { Opt_mountaddr, "mountaddr=%s" }, + { Opt_nconnect, "nconnect=%s" }, + { Opt_lookupcache, "lookupcache=%s" }, { Opt_fscache_uniq, "fsc=%s" }, { Opt_local_lock, "local_lock=%s" }, @@ -1544,6 +1549,11 @@ static int nfs_parse_mount_options(char *raw, if (mnt->mount_server.addrlen == 0) goto out_invalid_address; break; + case Opt_nconnect: + if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS)) + goto out_invalid_value; + mnt->nfs_server.nconnect = option; + break; case Opt_lookupcache: string = match_strdup(args); if (string == NULL) -- 2.9.3