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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Trond Myklebust <trond.myklebust@hammerspace.com>,
        Jan Stancek <jstancek@redhat.com>,
        Naresh Kamboju <naresh.kamboju@linaro.org>,
        Sasha Levin <sashal@kernel.org>, linux-nfs@vger.kernel.org
Subject: [PATCH AUTOSEL 5.2 54/94] NFSv2: Fix write regression
Date:   Wed,  4 Sep 2019 11:56:59 -0400
Message-Id: <20190904155739.2816-54-sashal@kernel.org>
In-Reply-To: <20190904155739.2816-1-sashal@kernel.org>
References: <20190904155739.2816-1-sashal@kernel.org>
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From: Trond Myklebust <trond.myklebust@hammerspace.com>

[ Upstream commit d33d4beb522987d1c305c12500796f9be3687dee ]

Ensure we update the write result count on success, since the
RPC call itself does not do so.

Reported-by: Jan Stancek <jstancek@redhat.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/proc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index ec79d2214a78c..0f7288b94633b 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -616,8 +616,10 @@ static int nfs_proc_pgio_rpc_prepare(struct rpc_task *task,
 
 static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
 {
-	if (task->tk_status >= 0)
+	if (task->tk_status >= 0) {
+		hdr->res.count = hdr->args.count;
 		nfs_writeback_update_inode(hdr);
+	}
 	return 0;
 }
 
-- 
2.20.1