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NLM: Simplify client locks

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2006-03-20 13:44:44 -05:00
parent d72b7a6b26
commit 3a649b8846
3 changed files with 35 additions and 54 deletions
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39
fs/lockd/clntproc.c
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@@ -136,15 +136,14 @@ static void nlmclnt_setlockargs(struct nlm_rqst *req, struct file_lock *fl)
(unsigned int)fl->fl_u.nfs_fl.owner->pid,
system_utsname.nodename);
lock->svid = fl->fl_u.nfs_fl.owner->pid;
locks_copy_lock(&lock->fl, fl);
lock->fl.fl_start = fl->fl_start;
lock->fl.fl_end = fl->fl_end;
lock->fl.fl_type = fl->fl_type;
}
static void nlmclnt_release_lockargs(struct nlm_rqst *req)
{
struct file_lock *fl = &req->a_args.lock.fl;
if (fl->fl_ops && fl->fl_ops->fl_release_private)
fl->fl_ops->fl_release_private(fl);
BUG_ON(req->a_args.lock.fl.fl_ops != NULL);
}
/*
@@ -455,7 +454,6 @@ static void nlmclnt_locks_release_private(struct file_lock *fl)
{
list_del(&fl->fl_u.nfs_fl.list);
nlm_put_lockowner(fl->fl_u.nfs_fl.owner);
fl->fl_ops = NULL;
}
static struct file_lock_operations nlmclnt_lock_ops = {
@@ -515,41 +513,36 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
{
struct nlm_host *host = req->a_host;
struct nlm_res *resp = &req->a_res;
long timeout;
int status;
struct nlm_wait *block = NULL;
int status = -ENOLCK;
if (!host->h_monitored && nsm_monitor(host) < 0) {
printk(KERN_NOTICE "lockd: failed to monitor %s\n",
host->h_name);
status = -ENOLCK;
goto out;
}
if (req->a_args.block) {
status = nlmclnt_prepare_block(req, host, fl);
if (status < 0)
goto out;
}
block = nlmclnt_prepare_block(host, fl);
for(;;) {
status = nlmclnt_call(req, NLMPROC_LOCK);
if (status < 0)
goto out_unblock;
if (resp->status != NLM_LCK_BLOCKED)
if (!req->a_args.block)
break;
/* Wait on an NLM blocking lock */
timeout = nlmclnt_block(req, NLMCLNT_POLL_TIMEOUT);
/* Did a reclaimer thread notify us of a server reboot? */
if (resp->status == NLM_LCK_DENIED_GRACE_PERIOD)
continue;
if (resp->status != NLM_LCK_BLOCKED)
break;
if (timeout >= 0)
continue;
/* We were interrupted. Send a CANCEL request to the server
/* Wait on an NLM blocking lock */
status = nlmclnt_block(block, req, NLMCLNT_POLL_TIMEOUT);
/* if we were interrupted. Send a CANCEL request to the server
* and exit
*/
status = (int)timeout;
goto out_unblock;
if (status < 0)
goto out_unblock;
if (resp->status != NLM_LCK_BLOCKED)
break;
}
if (resp->status == NLM_LCK_GRANTED) {
@@ -560,7 +553,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
}
status = nlm_stat_to_errno(resp->status);
out_unblock:
nlmclnt_finish_block(req);
nlmclnt_finish_block(block);
/* Cancel the blocked request if it is still pending */
if (resp->status == NLM_LCK_BLOCKED)
nlmclnt_cancel(host, req->a_args.block, fl);