[PATCH AUTOSEL for 4.9 078/156] NFSv4.1 respect server's max size in CREATE_SESSION

From: alexander . levin
Date: Thu Dec 07 2017 - 10:52:12 EST


From: Olga Kornievskaia <kolga@xxxxxxxxxx>

[ Upstream commit 033853325fe3bdc70819a8b97915bd3bca41d3af ]

Currently client doesn't respect max sizes server returns in CREATE_SESSION.
nfs4_session_set_rwsize() gets called and server->rsize, server->wsize are 0
so they never get set to the sizes returned by the server.

Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
fs/nfs/nfs4client.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 074ac7131459..f6b0848cc831 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -1004,9 +1004,9 @@ static void nfs4_session_set_rwsize(struct nfs_server *server)
server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;

- if (server->rsize > server_resp_sz)
+ if (!server->rsize || server->rsize > server_resp_sz)
server->rsize = server_resp_sz;
- if (server->wsize > server_rqst_sz)
+ if (!server->wsize || server->wsize > server_rqst_sz)
server->wsize = server_rqst_sz;
#endif /* CONFIG_NFS_V4_1 */
}
--
2.11.0