From 16fb24252a8170799e7adf14d8fc31b817fcaf53 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 1 Feb 2006 12:18:22 -0500
Subject: [PATCH] NLM: Fix arguments to NLM_CANCEL call
The OpenGroup docs state that the arguments "block", "exclusive" and
"alock" must exactly match the arguments for the lock call that we are
trying to cancel.
Currently, "block" is always set to false, which is wrong.
See bug# 5956 on bugzilla.kernel.org.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---
fs/lockd/clntproc.c | 7 ++++---
include/linux/lockd/lockd.h | 1 -
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 145524039577c..b8ecfa1168f3e 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -28,6 +28,7 @@ static int nlmclnt_lock(struct nlm_rqst *, struct file_lock *);
static int nlmclnt_unlock(struct nlm_rqst *, struct file_lock *);
static int nlm_stat_to_errno(u32 stat);
static void nlmclnt_locks_init_private(struct file_lock *fl, struct nlm_host *host);
+static int nlmclnt_cancel(struct nlm_host *, int , struct file_lock *);
static const struct rpc_call_ops nlmclnt_unlock_ops;
static const struct rpc_call_ops nlmclnt_cancel_ops;
@@ -598,7 +599,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
nlmclnt_finish_block(req);
/* Cancel the blocked request if it is still pending */
if (resp->status == NLM_LCK_BLOCKED)
- nlmclnt_cancel(host, fl);
+ nlmclnt_cancel(host, req->a_args.block, fl);
out:
nlmclnt_release_lockargs(req);
return status;
@@ -728,8 +729,7 @@ static const struct rpc_call_ops nlmclnt_unlock_ops = {
* We always use an async RPC call for this in order not to hang a
* process that has been Ctrl-C'ed.
*/
-int
-nlmclnt_cancel(struct nlm_host *host, struct file_lock *fl)
+static int nlmclnt_cancel(struct nlm_host *host, int block, struct file_lock *fl)
{
struct nlm_rqst *req;
unsigned long flags;
@@ -750,6 +750,7 @@ nlmclnt_cancel(struct nlm_host *host, struct file_lock *fl)
req->a_flags = RPC_TASK_ASYNC;
nlmclnt_setlockargs(req, fl);
+ req->a_args.block = block;
status = nlmclnt_async_call(req, NLMPROC_CANCEL, &nlmclnt_cancel_ops);
if (status < 0) {
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 95c8fea293baa..afe9a8f5c5aed 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -148,7 +148,6 @@ struct nlm_rqst * nlmclnt_alloc_call(void);
int nlmclnt_prepare_block(struct nlm_rqst *req, struct nlm_host *host, struct file_lock *fl);
void nlmclnt_finish_block(struct nlm_rqst *req);
long nlmclnt_block(struct nlm_rqst *req, long timeout);
-int nlmclnt_cancel(struct nlm_host *, struct file_lock *);
u32 nlmclnt_grant(struct nlm_lock *);
void nlmclnt_recovery(struct nlm_host *, u32);
int nlmclnt_reclaim(struct nlm_host *, struct file_lock *);
--
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