From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [PATCH 1/2] dlm: initialize file_lock struct in GETLK before copying conflicting lock Date: Wed, 21 Jan 2009 11:34:50 -0500 Message-ID: <1232555691-29859-2-git-send-email-jlayton@redhat.com> References: <1232555691-29859-1-git-send-email-jlayton@redhat.com> Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, nfsv4@linux-nfs.org, cluster-devel@redhat.com To: lkml@vger.kernel.org Return-path: Received: from mx2.redhat.com ([66.187.237.31]:42374 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751862AbZAUQez (ORCPT ); Wed, 21 Jan 2009 11:34:55 -0500 In-Reply-To: <1232555691-29859-1-git-send-email-jlayton@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: dlm_posix_get fills out the relevant fields in the file_lock before returning when there is a lock conflict, but doesn't clean out any of the other fields in the file_lock. When nfsd does a NFSv4 lockt call, it sets the fl_lmops to nfsd_posix_mng_ops before calling the lower fs. When the lock comes back after testing a lock on GFS2, it still has that field set. This confuses nfsd into thinking that the file_lock is a nfsd4 lock. Fix this by making DLM reinitialize the file_lock before copying the fields from the conflicting lock. Signed-off-by: Jeff Layton --- fs/dlm/plock.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index eba87ff..ca46f11 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -304,7 +304,9 @@ int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file, if (rv == -ENOENT) rv = 0; else if (rv > 0) { + locks_init_lock(fl); fl->fl_type = (op->info.ex) ? F_WRLCK : F_RDLCK; + fl->fl_flags = FL_POSIX; fl->fl_pid = op->info.pid; fl->fl_start = op->info.start; fl->fl_end = op->info.end; -- 1.5.5.6