From 1969823caf163593c82df9f9589074720bed2eea Mon Sep 17 00:00:00 2001
From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 6 May 2025 16:42:25 -0400
Subject: [PATCH] NFSD: Use rqstp->rq_bvec in nfsd_iter_write()

If we can get rid of all uses of rq_vec, then it can be removed.
Replace one use of rqstp::rq_vec with rqstp::rq_bvec.

The feeling of layering violation grows stronger now that
<linux/sunrpc/xdr.h> is included in fs/nfsd/vfs.c.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfsd/vfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 43ecc5ae0c3f1..fac53cd145e78 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -31,6 +31,7 @@
 #include <linux/exportfs.h>
 #include <linux/writeback.h>
 #include <linux/security.h>
+#include <linux/sunrpc/xdr.h>
 
 #include "xdr3.h"
 
@@ -1206,8 +1207,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	if (stable && !fhp->fh_use_wgather)
 		flags |= RWF_SYNC;
 
-	nvecs = svc_fill_write_vector(rqstp, payload);
-	iov_iter_kvec(&iter, ITER_SOURCE, rqstp->rq_vec, nvecs, *cnt);
+	nvecs = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, payload);
+	iov_iter_bvec(&iter, ITER_SOURCE, rqstp->rq_bvec, nvecs, *cnt);
 	since = READ_ONCE(file->f_wb_err);
 	if (verf)
 		nfsd_copy_write_verifier(verf, nn);
-- 
2.47.2