From b960a34b73e4c1c972623bc2076e24b97588d09e Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 9 May 2019 08:21:21 +0100 Subject: rxrpc: Allow the kernel to mark a call as being non-interruptible Allow kernel services using AF_RXRPC to indicate that a call should be non-interruptible. This allows kafs to make things like lock-extension and writeback data storage calls non-interruptible. If this is set, signals will be ignored for operations on that call where possible - such as waiting to get a call channel on an rxrpc connection. It doesn't prevent UDP sendmsg from being interrupted, but that will be handled by packet retransmission. rxrpc_kernel_recv_data() isn't affected by this since that never waits, preferring instead to return -EAGAIN and leave the waiting to the caller. Userspace initiated calls can't be set to be uninterruptible at this time. Signed-off-by: David Howells --- net/rxrpc/ar-internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/rxrpc/ar-internal.h') diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 062ca9dc29b8..07fc1dfa4878 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -482,6 +482,7 @@ enum rxrpc_call_flag { RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ + RXRPC_CALL_IS_INTR, /* The call is interruptible */ }; /* @@ -711,6 +712,7 @@ struct rxrpc_call_params { u32 normal; /* Max time since last call packet (msec) */ } timeouts; u8 nr_timeouts; /* Number of timeouts specified */ + bool intr; /* The call is interruptible */ }; struct rxrpc_send_params { -- cgit v1.2.3