ksmbd: only v2 leases handle the directory

When smb2 leases is disable, ksmbd can send oplock break notification
and cause wait oplock break ack timeout. It may appear like hang when
accessing a directory. This patch make only v2 leases handle the
directory.

Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c
index 001926d3b348c88ff98bc1766a6a8b280415e39e..53dfaac425c68dc5f2192924b546b4f9fb71f6c8 100644 (file)
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -1197,6 +1197,12 @@ int smb_grant_oplock(struct ksmbd_work *work, int req_op_level, u64 pid,
        bool prev_op_has_lease;
        __le32 prev_op_state = 0;
 
+       /* Only v2 leases handle the directory */
+       if (S_ISDIR(file_inode(fp->filp)->i_mode)) {
+               if (!lctx || lctx->version != 2)
+                       return 0;
+       }
+
        opinfo = alloc_opinfo(work, pid, tid);
        if (!opinfo)
                return -ENOMEM;