NFS: Create an nfs4_server_set_init_caps() function

And call it before doing an FSINFO probe to reset to the baseline
capabilities before probing.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 66fc936..ee14d71 100644 (file)
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -209,6 +209,7 @@ extern struct nfs_client *
 nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
                                struct nfs4_sessionid *, u32);
 extern struct nfs_server *nfs_create_server(struct fs_context *);
+extern void nfs4_server_set_init_caps(struct nfs_server *);
 extern struct nfs_server *nfs4_create_server(struct fs_context *);
 extern struct nfs_server *nfs4_create_referral_server(struct fs_context *);
 extern int nfs4_update_server(struct nfs_server *server, const char *hostname,

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index af57332..3fb0ca9 100644 (file)
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -1059,6 +1059,24 @@ static void nfs4_session_limit_xasize(struct nfs_server *server)
 #endif
 }
 
+void nfs4_server_set_init_caps(struct nfs_server *server)
+{
+       /* Set the basic capabilities */
+       server->caps |= server->nfs_client->cl_mvops->init_caps;
+       if (server->flags & NFS_MOUNT_NORDIRPLUS)
+                       server->caps &= ~NFS_CAP_READDIRPLUS;
+       if (server->nfs_client->cl_proto == XPRT_TRANSPORT_RDMA)
+               server->caps &= ~NFS_CAP_READ_PLUS;
+
+       /*
+        * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
+        * authentication.
+        */
+       if (nfs4_disable_idmapping &&
+                       server->client->cl_auth->au_flavor == RPC_AUTH_UNIX)
+               server->caps |= NFS_CAP_UIDGID_NOMAP;
+}
+
 static int nfs4_server_common_setup(struct nfs_server *server,
                struct nfs_fh *mntfh, bool auth_probe)
 {
@@ -1078,20 +1096,7 @@ static int nfs4_server_common_setup(struct nfs_server *server,
        if (error < 0)
                goto out;
 
-       /* Set the basic capabilities */
-       server->caps |= server->nfs_client->cl_mvops->init_caps;
-       if (server->flags & NFS_MOUNT_NORDIRPLUS)
-                       server->caps &= ~NFS_CAP_READDIRPLUS;
-       if (server->nfs_client->cl_proto == XPRT_TRANSPORT_RDMA)
-               server->caps &= ~NFS_CAP_READ_PLUS;
-       /*
-        * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
-        * authentication.
-        */
-       if (nfs4_disable_idmapping &&
-                       server->client->cl_auth->au_flavor == RPC_AUTH_UNIX)
-               server->caps |= NFS_CAP_UIDGID_NOMAP;
-
+       nfs4_server_set_init_caps(server);
 
        /* Probe the root fh to retrieve its FSID and filehandle */
        error = nfs4_get_rootfh(server, mntfh, auth_probe);

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 979665a..1c485ed 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3937,6 +3937,8 @@ int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
                .interruptible = true,
        };
        int err;
+
+       nfs4_server_set_init_caps(server);
        do {
                err = nfs4_handle_exception(server,
                                _nfs4_server_capabilities(server, fhandle),