NFSv4: Add support for the RELEASE_LOCKOWNER operation
This is needed by NFSv4.0 servers in order to keep the number of locking
stateids at a manageable level.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index de9ff15..5d3e8a2 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4414,6 +4414,34 @@
return err;
}
+static void nfs4_release_lockowner_release(void *calldata)
+{
+ kfree(calldata);
+}
+
+const struct rpc_call_ops nfs4_release_lockowner_ops = {
+ .rpc_release = nfs4_release_lockowner_release,
+};
+
+void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
+{
+ struct nfs_server *server = lsp->ls_state->owner->so_server;
+ struct nfs_release_lockowner_args *args;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
+ };
+
+ if (server->nfs_client->cl_mvops->minor_version != 0)
+ return;
+ args = kmalloc(sizeof(*args), GFP_NOFS);
+ if (!args)
+ return;
+ args->lock_owner.clientid = server->nfs_client->cl_clientid;
+ args->lock_owner.id = lsp->ls_id.id;
+ msg.rpc_argp = args;
+ rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
+}
+
#define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,