This is a note to let you know that I've just added the patch titled
tipc: improve function tipc_wait_for_cond()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tipc-improve-function-tipc_wait_for_cond.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 223b7329ec6a0dae1b7f7db7b770e93f4a069ef9 Mon Sep 17 00:00:00 2001
From: Tung Nguyen <tung.q.nguyen@xxxxxxxxxxxxxx>
Date: Tue, 19 Feb 2019 11:20:47 +0700
Subject: tipc: improve function tipc_wait_for_cond()
From: Tung Nguyen <tung.q.nguyen@xxxxxxxxxxxxxx>
commit 223b7329ec6a0dae1b7f7db7b770e93f4a069ef9 upstream.
Commit 844cf763fba6 ("tipc: make macro tipc_wait_for_cond() smp safe")
replaced finish_wait() with remove_wait_queue() but still used
prepare_to_wait(). This causes unnecessary conditional
checking before adding to wait queue in prepare_to_wait().
This commit replaces prepare_to_wait() with add_wait_queue()
as the pair function with remove_wait_queue().
Acked-by: Ying Xue <ying.xue@xxxxxxxxxxxxx>
Acked-by: Jon Maloy <jon.maloy@xxxxxxxxxxxx>
Signed-off-by: Tung Nguyen <tung.q.nguyen@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/tipc/socket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -388,7 +388,7 @@ static int tipc_sk_sock_err(struct socke
rc_ = tipc_sk_sock_err((sock_), timeo_); \
if (rc_) \
break; \
- prepare_to_wait(sk_sleep(sk_), &wait_, TASK_INTERRUPTIBLE); \
+ add_wait_queue(sk_sleep(sk_), &wait_); \
release_sock(sk_); \
*(timeo_) = wait_woken(&wait_, TASK_INTERRUPTIBLE, *(timeo_)); \
sched_annotate_sleep(); \
Patches currently in stable-queue which might be from tung.q.nguyen@xxxxxxxxxxxxxx are
queue-4.19/tipc-improve-function-tipc_wait_for_cond.patch
