From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Wed, 14 Aug 2019 14:19:09 -0400
Subject: [PATCH] NFS: Fix initialisation of I/O result struct in
 nfs_pgio_rpcsetup
Git-commit: 17d8c5d145000070c581f2a8aa01edc7998582ab
Patch-mainline: v5.3
References: git-fixes

Initialise the result count to 0 rather than initialising it to the
argument count. The reason is that we want to ensure we record the
I/O stats correctly in the case where an error is returned (for
instance in the layoutstats).

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: NeilBrown <neilb@suse.com>

---
 fs/nfs/pagelist.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -581,7 +581,7 @@ static void nfs_pgio_rpcsetup(struct nfs
 	}
 
 	hdr->res.fattr   = &hdr->fattr;
-	hdr->res.count   = count;
+	hdr->res.count   = 0;
 	hdr->res.eof     = 0;
 	hdr->res.verf    = &hdr->verf;
 	nfs_fattr_init(&hdr->fattr);