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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-29 16:38:39 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-07-05 13:13:18 -0400 |
| commit | 01c3b861cd77b28565a2d18c7caa3ce7f938e35c (patch) | |
| tree | 1445669572dd5f0e97ec0690da88eefd8bbf5acb /fs/lockd/clntproc.c | |
| parent | f07f18dd6f29f11887b8d9cf7ecb736bf2f7dc62 (diff) | |
| download | lwn-01c3b861cd77b28565a2d18c7caa3ce7f938e35c.tar.gz lwn-01c3b861cd77b28565a2d18c7caa3ce7f938e35c.zip | |
NLM,NFSv4: Wait on local locks before we put RPC calls on the wire
Use FL_ACCESS flag to test and/or wait for local locks before we try
requesting a lock from the server
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/lockd/clntproc.c')
| -rw-r--r-- | fs/lockd/clntproc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 24c691f5480e..89ba0df14c22 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -496,6 +496,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl) struct nlm_host *host = req->a_host; struct nlm_res *resp = &req->a_res; struct nlm_wait *block = NULL; + unsigned char fl_flags = fl->fl_flags; int status = -ENOLCK; if (!host->h_monitored && nsm_monitor(host) < 0) { @@ -503,6 +504,10 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl) host->h_name); goto out; } + fl->fl_flags |= FL_ACCESS; + status = do_vfs_lock(fl); + if (status < 0) + goto out; block = nlmclnt_prepare_block(host, fl); again: @@ -537,8 +542,8 @@ again: up_read(&host->h_rwsem); goto again; } - fl->fl_flags |= FL_SLEEP; /* Ensure the resulting lock will get added to granted list */ + fl->fl_flags = fl_flags | FL_SLEEP; if (do_vfs_lock(fl) < 0) printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); up_read(&host->h_rwsem); @@ -551,6 +556,7 @@ out_unblock: nlmclnt_cancel(host, req->a_args.block, fl); out: nlm_release_call(req); + fl->fl_flags = fl_flags; return status; } |