[PATCH v5 17/19] NFSD: Remove NFSSVC_MAXBLKSIZE_V2 macro

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

The 8192-byte maximum is a protocol-defined limit, and we already
have a symbolic constant defined whose name matches the name of
the limit defined in the protocol. Replace the duplicate.

No change in behavior is expected.

Reviewed-by: NeilBrown <neil@brown.name>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfsd/nfsd.h    | 2 --
 fs/nfsd/nfsproc.c | 4 ++--
 fs/nfsd/nfsxdr.c  | 4 ++--
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index b9ac81023c13..6428a431d765 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -47,8 +47,6 @@ bool nfsd_support_version(int vers);
  * Maximum blocksizes supported by daemon under various circumstances.
  */
 #define NFSSVC_MAXBLKSIZE       RPCSVC_MAXPAYLOAD
-/* NFSv2 is limited by the protocol specification, see RFC 1094 */
-#define NFSSVC_MAXBLKSIZE_V2    (8*1024)
 
 struct readdir_cd {
 	__be32			err;	/* 0, nfserr, or nfserr_eof */
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 65cbe04184f3..11fc9a1d5d80 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -212,7 +212,7 @@ nfsd_proc_read(struct svc_rqst *rqstp)
 		SVCFH_fmt(&argp->fh),
 		argp->count, argp->offset);
 
-	argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2);
+	argp->count = min_t(u32, argp->count, NFS_MAXDATA);
 	argp->count = min_t(u32, argp->count, rqstp->rq_res.buflen);
 
 	resp->pages = rqstp->rq_next_page;
@@ -707,7 +707,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
 		.pc_argzero = sizeof(struct nfsd_readargs),
 		.pc_ressize = sizeof(struct nfsd_readres),
 		.pc_cachetype = RC_NOCACHE,
-		.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
+		.pc_xdrressize = ST+AT+1+NFS_MAXDATA/4,
 		.pc_name = "READ",
 	},
 	[NFSPROC_WRITECACHE] = {
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 5777f40c7353..fc262ceafca9 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -336,7 +336,7 @@ nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 	/* opaque data */
 	if (xdr_stream_decode_u32(xdr, &args->len) < 0)
 		return false;
-	if (args->len > NFSSVC_MAXBLKSIZE_V2)
+	if (args->len > NFS_MAXDATA)
 		return false;
 
 	return xdr_stream_subsegment(xdr, &args->payload, args->len);
@@ -540,7 +540,7 @@ nfssvc_encode_statfsres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 		p = xdr_reserve_space(xdr, XDR_UNIT * 5);
 		if (!p)
 			return false;
-		*p++ = cpu_to_be32(NFSSVC_MAXBLKSIZE_V2);
+		*p++ = cpu_to_be32(NFS_MAXDATA);
 		*p++ = cpu_to_be32(stat->f_bsize);
 		*p++ = cpu_to_be32(stat->f_blocks);
 		*p++ = cpu_to_be32(stat->f_bfree);
-- 
2.49.0