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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 /fs/afs
parent0ab4c9594812c4bc5606daf0677ae304bf7ec8c8 (diff)
downloadlinux-b960a34b73e4c1c972623bc2076e24b97588d09e.tar.bz2
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 'fs/afs')
-rw-r--r--fs/afs/rxrpc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 4974defb4592..87763379952d 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -417,6 +417,7 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp)
afs_wake_up_async_call :
afs_wake_up_call_waiter),
call->upgrade,
+ true,
call->debug_id);
if (IS_ERR(rxcall)) {
ret = PTR_ERR(rxcall);