From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/net/bluetooth/cmtp/core.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/kernel/net/bluetooth/cmtp/core.c b/kernel/net/bluetooth/cmtp/core.c
index 4764ed7..83eb84e 100644
--- a/kernel/net/bluetooth/cmtp/core.c
+++ b/kernel/net/bluetooth/cmtp/core.c
@@ -288,9 +288,6 @@
add_wait_queue(sk_sleep(sk), &wait);
while (1) {
- /* Ensure session->terminate is updated */
- smp_mb__before_atomic();
-
if (atomic_read(&session->terminate))
break;
if (sk->sk_state != BT_CONNECTED)
@@ -306,6 +303,10 @@
cmtp_process_transmit(session);
+ /*
+ * wait_woken() performs the necessary memory barriers
+ * for us; see the header comment for this primitive.
+ */
wait_woken(&wait, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
}
remove_wait_queue(sk_sleep(sk), &wait);
@@ -436,9 +437,10 @@
/* Stop session thread */
atomic_inc(&session->terminate);
- /* Ensure session->terminate is updated */
- smp_mb__after_atomic();
-
+ /*
+ * See the comment preceding the call to wait_woken()
+ * in cmtp_session().
+ */
wake_up_interruptible(sk_sleep(session->sock->sk));
} else
err = -ENOENT;
--
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