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NLM: Fix arguments to NLM_CANCEL call

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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>
This commit is contained in:
Trond Myklebust 2006-02-01 12:18:22 -05:00
parent 3c3b809e25
commit 16fb24252a
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/lockd/clntproc.c
View File

@ -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) {

1
include/linux/lockd/lockd.h
View File

@ -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 *);