cifs: update iface_last_update on each query-and-update

[ Upstream commit 78e727e58e54efca4c23863fbd9e16e9d2d83f81 ]

iface_last_update was an unused field when it was introduced.
Later, when we had periodic update of server interface list,
this field was used regularly to decide when to update next.

However, with the new logic of updating the interfaces, it
becomes crucial that this field be updated whenever
parse_server_interfaces runs successfully.

This change updates this field when either the server does
not support query of interfaces; so that we do not query
the interfaces repeatedly. It also updates the field when
the function reaches the end.

Fixes: aa45dadd34e4 ("cifs: change iface_list from array to sorted linked list")
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 17310f3a9d8925d55f225ff25340c6dff9f6fdb8..beb81fa00cff45fd6ae53e736686cd22bce6e984 100644 (file)
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -615,6 +615,7 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
                                 "Empty network interface list returned by server %s\n",
                                 ses->server->hostname);
                rc = -EOPNOTSUPP;
+               ses->iface_last_update = jiffies;
                goto out;
        }
 
@@ -712,7 +713,6 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
 
                ses->iface_count++;
                spin_unlock(&ses->iface_lock);
-               ses->iface_last_update = jiffies;
 next_iface:
                nb_iface++;
                next = le32_to_cpu(p->Next);
@@ -734,6 +734,8 @@ next_iface:
        if ((bytes_left > 8) || p->Next)
                cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
 
+       ses->iface_last_update = jiffies;
+
 out:
        /*
         * Go through the list again and put the inactive entries