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Subject: [PATCH v2 7/7] NFSD: Clean up nfs4svc_encode_compoundres()
From:   Chuck Lever <chuck.lever@oracle.com>
To:     linux-nfs@vger.kernel.org
Date:   Sun, 28 Aug 2022 14:51:00 -0400
Message-ID: <166171266025.21449.2692376100575745686.stgit@manet.1015granger.net>
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In today's Linux NFS server implementation, the NFS dispatcher
initializes each XDR result stream, and the NFSv4 .pc_func and
.pc_encode methods all use xdr_stream-based encoding. This keeps
rq_res.len automatically updated. There is no longer a need for
the WARN_ON_ONCE() check in nfs4svc_encode_compoundres().

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfsd/nfs4xdr.c |    4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 1e9690a061ec..af51e2a8ceb7 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -5423,12 +5423,8 @@ bool
 nfs4svc_encode_compoundres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
 	struct nfsd4_compoundres *resp = rqstp->rq_resp;
-	struct xdr_buf *buf = xdr->buf;
 	__be32 *p;
 
-	WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len +
-				 buf->tail[0].iov_len);
-
 	/*
 	 * Send buffer space for the following items is reserved
 	 * at the top of nfsd4_proc_compound().