From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965030Ab2C3WRO (ORCPT ); Fri, 30 Mar 2012 18:17:14 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:40131 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935846Ab2C3VNa (ORCPT ); Fri, 30 Mar 2012 17:13:30 -0400 Message-Id: <20120330194853.978968752@linuxfoundation.org> User-Agent: quilt/0.60-19.1 Date: Fri, 30 Mar 2012 12:50:03 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Miklos Szeredi , Trond Myklebust Subject: [ 090/149] NFSv4: Return the delegation if the server returns NFS4ERR_OPENMODE In-Reply-To: <20120330195823.GA31857@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Trond Myklebust commit 3114ea7a24d3264c090556a2444fc6d2c06176d4 upstream. If a setattr() fails because of an NFS4ERR_OPENMODE error, it is probably due to us holding a read delegation. Ensure that the recovery routines return that delegation in this case. Reported-by: Miklos Szeredi Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 13 ++++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -191,6 +191,7 @@ struct nfs4_exception { long timeout; int retry; struct nfs4_state *state; + struct inode *inode; }; struct nfs4_state_recovery_ops { --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -257,18 +257,28 @@ static int nfs4_handle_exception(struct { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; + struct inode *inode = exception->inode; int ret = errorcode; exception->retry = 0; switch(errorcode) { case 0: return 0; + case -NFS4ERR_OPENMODE: + if (nfs_have_delegation(inode, FMODE_READ)) { + nfs_inode_return_delegation(inode); + exception->retry = 1; + return 0; + } + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(server, state); + goto wait_on_recovery; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: if (state != NULL) nfs_remove_bad_delegation(state->inode); - case -NFS4ERR_OPENMODE: if (state == NULL) break; nfs4_schedule_stateid_recovery(server, state); @@ -1901,6 +1911,7 @@ static int nfs4_do_setattr(struct inode struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { .state = state, + .inode = inode, }; int err; do {