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authorDavid Howells <dhowells@redhat.com>2019-05-09 08:21:21 +0100
committerDavid Howells <dhowells@redhat.com>2019-05-16 16:25:20 +0100
commitb960a34b73e4c1c972623bc2076e24b97588d09e (patch)
treeb7fafd6110ffa1aed594d55097755eea65da5d8d /net/rxrpc/call_object.c
parent0ab4c9594812c4bc5606daf0677ae304bf7ec8c8 (diff)
downloadlinux-sh-b960a34b73e4c1c972623bc2076e24b97588d09e.tar.gz
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 <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/call_object.c')
-rw-r--r--net/rxrpc/call_object.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index fe96881a334d..d0ca98d7aef5 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -241,6 +241,8 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
return call;
}
+ if (p->intr)
+ __set_bit(RXRPC_CALL_IS_INTR, &call->flags);
call->tx_total_len = p->tx_total_len;
trace_rxrpc_call(call, rxrpc_call_new_client, atomic_read(&call->usage),
here, (const void *)p->user_call_ID);