On Apr 3, 2008, at 6:39 PM, Trond Myklebust wrote:
Also fix up nlmclnt_lock() so that it doesn't pass modified
versions of
fl->fl_flags to nlmclnt_cancel() and other helpers.
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
fs/lockd/clntproc.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index b6b74a6..4e1c012 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -493,6 +493,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct
file_lock *fl)
}
fl->fl_flags |= FL_ACCESS;
status = do_vfs_lock(fl);
+ fl->fl_flags = fl_flags;
if (status < 0)
goto out;
@@ -530,10 +531,11 @@ again:
goto again;
}
/* Ensure the resulting lock will get added to granted list */
- fl->fl_flags = fl_flags | FL_SLEEP;
+ fl->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);
+ fl->fl_flags = fl_flags;
}
status = nlm_stat_to_errno(resp->status);
out_unblock:
@@ -543,7 +545,6 @@ out_unblock:
nlmclnt_cancel(host, req->a_args.block, fl);
out:
nlm_release_call(req);
- fl->fl_flags = fl_flags;
return status;
}
@@ -598,7 +599,8 @@ nlmclnt_unlock(struct nlm_rqst *req, struct
file_lock *fl)
{
struct nlm_host *host = req->a_host;
struct nlm_res *resp = &req->a_res;
- int status = 0;
+ int status;
+ unsigned char fl_flags = fl->fl_flags;
/*
* Note: the server is supposed to either grant us the unlock
@@ -607,11 +609,13 @@ nlmclnt_unlock(struct nlm_rqst *req, struct
file_lock *fl)
*/
fl->fl_flags |= FL_EXISTS;
down_read(&host->h_rwsem);
- if (do_vfs_lock(fl) == -ENOENT) {
- up_read(&host->h_rwsem);
+ status = do_vfs_lock(fl);
+ up_read(&host->h_rwsem);
+ fl->fl_flags = fl_flags;
+ if (status == -ENOENT) {
+ status = 0;
goto out;
}
- up_read(&host->h_rwsem);
It looks like nfs4_proc_unlck() also leaves the FL_EXISTS bit set.
Should this patch also fix nfs4_proc_unlck() ?
if (req->a_flags & RPC_TASK_ASYNC)
return nlm_async_call(req, NLMPROC_UNLOCK, &nlmclnt_unlock_ops);
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
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