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| author | David Howells <dhowells@redhat.com> | 2019-05-09 08:21:21 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2019-05-16 16:25:20 +0100 |
| commit | b960a34b73e4c1c972623bc2076e24b97588d09e (patch) | |
| tree | b7fafd6110ffa1aed594d55097755eea65da5d8d /net/rxrpc/call_object.c | |
| parent | 0ab4c9594812c4bc5606daf0677ae304bf7ec8c8 (diff) | |
| download | lwn-b960a34b73e4c1c972623bc2076e24b97588d09e.tar.gz lwn-b960a34b73e4c1c972623bc2076e24b97588d09e.zip | |
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.c | 2 |
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); |