NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup

[ Upstream commit 17d8c5d145000070c581f2a8aa01edc7998582ab ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 8a20774..af1bb73 100644 (file)
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -593,7 +593,7 @@ static void nfs_pgio_rpcsetup(struct nfs_pgio_header *hdr,
        }
 
        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);