libceph: assume argonaut on the server side

No one is running pre-argonaut.  In addition one of the argonaut
features (NOSRCADDR) has been required since day one (and a half,
2.6.34 vs 2.6.35) of the kernel client.

Allow for the possibility of reusing these feature bits later.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>

2 files changed, 4 insertions, 16 deletions

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 67a9aeb2f4ec..bd13a3267ae0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -80,12 +80,8 @@ static int parse_reply_info_in(void **p, void *end,
         info->symlink = *p;
         *p += info->symlink_len;
 
-        if (features & CEPH_FEATURE_DIRLAYOUTHASH)
-                ceph_decode_copy_safe(p, end, &info->dir_layout,
-                                      sizeof(info->dir_layout), bad);
-        else
-                memset(&info->dir_layout, 0, sizeof(info->dir_layout));
-
+        ceph_decode_copy_safe(p, end, &info->dir_layout,
+                              sizeof(info->dir_layout), bad);
         ceph_decode_32_safe(p, end, info->xattr_len, bad);
         ceph_decode_need(p, end, info->xattr_len, bad);
         info->xattr_data = *p;
@@ -3182,10 +3178,8 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
         recon_state.pagelist = pagelist;
         if (session->s_con.peer_features & CEPH_FEATURE_MDSENC)
                 recon_state.msg_version = 3;
-        else if (session->s_con.peer_features & CEPH_FEATURE_FLOCK)
-                recon_state.msg_version = 2;
         else
-                recon_state.msg_version = 1;
+                recon_state.msg_version = 2;
         err = iterate_session_caps(session, encode_caps_cb, &recon_state);
         if (err < 0)
                 goto fail;
diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h
index 6b92b3395fa9..65a38c4a02a1 100644
--- a/include/linux/ceph/ceph_features.h
+++ b/include/linux/ceph/ceph_features.h
@@ -213,12 +213,6 @@ DEFINE_CEPH_FEATURE_DEPRECATED(63, 1, RESERVED_BROKEN, LUMINOUS) // client-facin
          CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING | \
          CEPH_FEATURE_CEPHX_V2)
 
-#define CEPH_FEATURES_REQUIRED_DEFAULT   \
-        (CEPH_FEATURE_NOSRCADDR |        \
-         CEPH_FEATURE_SUBSCRIBE2 |       \
-         CEPH_FEATURE_RECONNECT_SEQ |    \
-         CEPH_FEATURE_PGID64 |           \
-         CEPH_FEATURE_PGPOOL3 |          \
-         CEPH_FEATURE_OSDENC)
+#define CEPH_FEATURES_REQUIRED_DEFAULT  0
 
 #endif