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[v2,2/2] nfsd: Don't set eof on a truncated READ_PLUS

Message ID 20201211172615.5716-2-trondmy@kernel.org (mailing list archive)
State New, archived
Headers show
Series [v2,1/2] nfsd: Fixes for nfsd4_encode_read_plus_data() | expand

Commit Message

Trond Myklebust Dec. 11, 2020, 5:26 p.m. UTC 
From: Trond Myklebust <trond.myklebust@hammerspace.com>

If the READ_PLUS operation was truncated due to an error, then ensure we
clear the 'eof' flag.

Fixes: 9f0b5792f07d ("NFSD: Encode a full READ_PLUS reply")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfsd/nfs4xdr.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 26f6e277101d..5f5169b9c2e9 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -4736,14 +4736,15 @@  nfsd4_encode_read_plus(struct nfsd4_compoundres *resp, __be32 nfserr,
 	if (nfserr && segments == 0)
 		xdr_truncate_encode(xdr, starting_len);
 	else {
-		tmp = htonl(eof);
-		write_bytes_to_xdr_buf(xdr->buf, starting_len,     &tmp, 4);
-		tmp = htonl(segments);
-		write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4);
 		if (nfserr) {
 			xdr_truncate_encode(xdr, last_segment);
 			nfserr = nfs_ok;
+			eof = 0;
 		}
+		tmp = htonl(eof);
+		write_bytes_to_xdr_buf(xdr->buf, starting_len,     &tmp, 4);
+		tmp = htonl(segments);
+		write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4);
 	}
 
 	return nfserr;