From 19e0663ff9bce2efb87be8b30f9e46b7843600f3 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trondmy@gmail.com>
Date: Mon, 6 Jan 2020 13:40:37 -0500
Subject: nfsd: Ensure sampling of the write verifier is atomic with the write

When doing an unstable write, we need to ensure that we sample the
write verifier before releasing the lock, and allowing a commit to
the same file to proceed.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/xdr3.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'fs/nfsd/xdr3.h')

diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index fe6fd4556c2e..4155fd71714c 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -159,6 +159,7 @@ struct nfsd3_writeres {
 	struct svc_fh		fh;
 	unsigned long		count;
 	int			committed;
+	__be32			verf[2];
 };
 
 struct nfsd3_renameres {
-- 
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