NFSv4: Remove nfs_client->cl_sem

Now that we're using the flags to indicate state that needs to be
recovered, as well as having implemented proper refcounting and spinlocking
on the state and open_owners, we can get rid of nfs_client->cl_sem. The
only remaining case that was dubious was the file locking, and that case is
now covered by the nfsi->rwsem.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 4e477ae58699..9bb81aec91cf 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -42,12 +42,6 @@ struct nfs_client {
         struct rb_root          cl_openowner_id;
         struct rb_root          cl_lockowner_id;
 
-        /*
-         * The following rwsem ensures exclusive access to the server
-         * while we recover the state following a lease expiration.
-         */
-        struct rw_semaphore     cl_sem;
-
         struct list_head        cl_delegations;
         struct rb_root          cl_state_owners;
         spinlock_t              cl_lock;