diff options
| author | David Howells <dhowells@redhat.com> | 2022-10-12 22:06:52 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-01-31 16:38:07 +0000 |
| commit | 223f59016fa2b6d01814dc53ace1c146857ba236 (patch) | |
| tree | e46db502097486f5593ece74ba4725f1de772703 /net/rxrpc/recvmsg.c | |
| parent | 828bebc80a031b9c07c0d5f2465910b6350cd616 (diff) | |
| download | lwn-223f59016fa2b6d01814dc53ace1c146857ba236.tar.gz lwn-223f59016fa2b6d01814dc53ace1c146857ba236.zip | |
rxrpc: Convert call->recvmsg_lock to a spinlock
Convert call->recvmsg_lock to a spinlock as it's only ever write-locked.
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/recvmsg.c')
| -rw-r--r-- | net/rxrpc/recvmsg.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c index dd54ceee7bcc..b7545fdc0401 100644 --- a/net/rxrpc/recvmsg.c +++ b/net/rxrpc/recvmsg.c @@ -40,12 +40,12 @@ void rxrpc_notify_socket(struct rxrpc_call *call) call->notify_rx(sk, call, call->user_call_ID); spin_unlock(&call->notify_lock); } else { - write_lock(&rx->recvmsg_lock); + spin_lock(&rx->recvmsg_lock); if (list_empty(&call->recvmsg_link)) { rxrpc_get_call(call, rxrpc_call_get_notify_socket); list_add_tail(&call->recvmsg_link, &rx->recvmsg_q); } - write_unlock(&rx->recvmsg_lock); + spin_unlock(&rx->recvmsg_lock); if (!sock_flag(sk, SOCK_DEAD)) { _debug("call %ps", sk->sk_data_ready); @@ -335,14 +335,14 @@ try_again: /* Find the next call and dequeue it if we're not just peeking. If we * do dequeue it, that comes with a ref that we will need to release. */ - write_lock(&rx->recvmsg_lock); + spin_lock(&rx->recvmsg_lock); l = rx->recvmsg_q.next; call = list_entry(l, struct rxrpc_call, recvmsg_link); if (!(flags & MSG_PEEK)) list_del_init(&call->recvmsg_link); else rxrpc_get_call(call, rxrpc_call_get_recvmsg); - write_unlock(&rx->recvmsg_lock); + spin_unlock(&rx->recvmsg_lock); call_debug_id = call->debug_id; trace_rxrpc_recvmsg(call_debug_id, rxrpc_recvmsg_dequeue, 0); @@ -431,9 +431,9 @@ error_unlock_call: error_requeue_call: if (!(flags & MSG_PEEK)) { - write_lock(&rx->recvmsg_lock); + spin_lock(&rx->recvmsg_lock); list_add(&call->recvmsg_link, &rx->recvmsg_q); - write_unlock(&rx->recvmsg_lock); + spin_unlock(&rx->recvmsg_lock); trace_rxrpc_recvmsg(call_debug_id, rxrpc_recvmsg_requeue, 0); } else { rxrpc_put_call(call, rxrpc_call_put_recvmsg); |