diff options
| author | David Howells <dhowells@redhat.com> | 2022-11-29 15:37:37 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-02-08 02:11:21 +0300 |
| commit | a33395ab85b9b9cff83948a03a1d6d96347935d8 (patch) | |
| tree | 0f30c05bce5ebda7051de51e88d4083412c0f1b1 /net/rxrpc/call_object.c | |
| parent | 16d5677ef1041beee18b5709bf5759611ec82875 (diff) | |
| download | linux-a33395ab85b9b9cff83948a03a1d6d96347935d8.tar.xz | |
rxrpc: Fix overwaking on call poking
If an rxrpc call is given a poke, it will get woken up unconditionally,
even if there's already a poke pending (for which there will have been a
wake) or if the call refcount has gone to 0.
Fix this by only waking the call if it is still referenced and if it
doesn't already have a poke pending.
Fixes: 15f661dc95da ("rxrpc: Implement a mechanism to send an event notification to a call")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'net/rxrpc/call_object.c')
| -rw-r--r-- | net/rxrpc/call_object.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 6eaffb0d8fdc..e9f1f49d18c2 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -54,12 +54,14 @@ void rxrpc_poke_call(struct rxrpc_call *call, enum rxrpc_call_poke_trace what) spin_lock_bh(&local->lock); busy = !list_empty(&call->attend_link); trace_rxrpc_poke_call(call, busy, what); + if (!busy && !rxrpc_try_get_call(call, rxrpc_call_get_poke)) + busy = true; if (!busy) { - rxrpc_get_call(call, rxrpc_call_get_poke); list_add_tail(&call->attend_link, &local->call_attend_q); } spin_unlock_bh(&local->lock); - rxrpc_wake_up_io_thread(local); + if (!busy) + rxrpc_wake_up_io_thread(local); } } |