smb: client: set missing retry flag in cifs_readv_callback()

Set NETFS_SREQ_NEED_RETRY flag to tell netfslib that the subreq needs
to be retried.

Fixes: ee4cdf7 ("netfs: Speed up buffered reading")
Signed-off-by: Paulo Alcantara (Red Hat) <[email protected]>
Signed-off-by: David Howells <[email protected]>
Link: https://lore.kernel.org/[email protected]
Tested-by: Steve French <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: pcacjr

fs/smb/client/cifssmb.c

@@ -1335,6 +1335,7 @@ cifs_readv_callback(struct mid_q_entry *mid)
 		break;
 	case MID_REQUEST_SUBMITTED:
 	case MID_RETRY_NEEDED:
+		__set_bit(NETFS_SREQ_NEED_RETRY, &rdata->subreq.flags);
 		rdata->result = -EAGAIN;
 		if (server->sign && rdata->got_bytes)
 			/* reset bytes number since we can not check a sign */