This is a note to let you know that I've just added the patch titled NFS: Remove unused callback void decoder to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nfs-remove-unused-callback-void-decoder.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 243fd94e96fcfd44833269849d0625c0eb89662b Author: Chuck Lever <chuck.lever@xxxxxxxxxx> Date: Thu Jul 15 15:52:31 2021 -0400 NFS: Remove unused callback void decoder [ Upstream commit c35a810ce59524971c4a3b45faed4d0121e5a305 ] Clean up: The callback RPC dispatcher no longer invokes these call outs, although svc_process_common() relies on seeing a .pc_encode function. Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index e7d1efd45fa46..600e640682401 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -63,11 +63,10 @@ static __be32 nfs4_callback_null(struct svc_rqst *rqstp) return htonl(NFS4_OK); } -static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p) -{ - return xdr_argsize_check(rqstp, p); -} - +/* + * svc_process_common() looks for an XDR encoder to know when + * not to drop a Reply. + */ static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p) { return xdr_ressize_check(rqstp, p); @@ -1063,7 +1062,6 @@ static struct callback_op callback_ops[] = { static const struct svc_procedure nfs4_callback_procedures1[] = { [CB_NULL] = { .pc_func = nfs4_callback_null, - .pc_decode = nfs4_decode_void, .pc_encode = nfs4_encode_void, .pc_xdrressize = 1, .pc_name = "NULL",