Files
android_kernel_xiaomi_sm8450/include/linux
Eric Dumazet 67db3e4bfb tcp: no longer hold ehash lock while calling tcp_get_info()
We had various problems in the past in tcp_get_info() and used
specific synchronization to avoid deadlocks.

We would like to add more instrumentation points for TCP, and
avoiding grabing socket lock in tcp_getinfo() was too costly.

Being able to lock the socket allows to provide consistent set
of fields.

inet_diag_dump_icsk() can make sure ehash locks are not
held any more when tcp_get_info() is called.

We can remove syncp added in commit d654976cbf
("tcp: fix a potential deadlock in tcp_get_info()"), but we need
to use lock_sock_fast() instead of spin_lock_bh() since TCP input
path can now be run from process context.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-09 13:02:27 -05:00
..
2016-09-10 17:31:39 +05:30
2016-07-08 16:23:11 +02:00
2016-08-25 11:26:48 -04:00
2016-09-14 09:18:06 -06:00
2016-06-07 13:41:38 -06:00
2016-08-11 09:41:35 -06:00
2016-09-27 21:20:53 -04:00
2016-08-02 19:35:24 -04:00
2016-10-07 18:46:30 -07:00
2016-09-16 09:34:15 +01:00
2016-06-07 13:41:38 -06:00
2016-05-17 15:48:12 -04:00
2016-09-16 12:44:20 +02:00
2016-07-22 09:07:02 +02:00
2016-09-24 10:48:18 +02:00
2016-10-20 15:51:28 +11:00
2016-09-16 09:34:15 +01:00
2016-09-14 09:18:09 -06:00
2016-11-03 15:41:11 -04:00
2016-09-20 23:20:32 +02:00
2016-05-11 22:37:54 +02:00
2016-08-10 11:23:44 -04:00
2016-09-15 16:49:39 +02:00
2016-09-14 12:57:43 -07:00
2016-09-27 12:33:47 +02:00
2016-10-24 19:13:20 -07:00
2016-08-04 10:16:55 +09:30
2016-07-29 12:17:52 -07:00
2016-08-28 23:32:41 -04:00
2016-06-03 19:37:21 -04:00
2016-04-25 15:09:11 -04:00
2016-10-19 11:36:22 -06:00
2016-05-02 09:00:56 -05:00
2016-10-31 16:18:30 -04:00
2016-10-14 11:36:59 -07:00
2016-07-12 19:25:38 -07:00
2016-09-27 21:52:00 -04:00
2016-09-08 15:01:10 -07:00
2016-09-08 15:01:10 -07:00
2016-07-06 10:51:14 +01:00
2016-09-20 04:43:36 -04:00
2016-07-26 16:19:19 -07:00
2016-09-08 22:15:25 -07:00
2016-06-14 10:54:40 -07:00
2016-09-06 18:30:20 +02:00
2016-05-08 23:46:14 -04:00
2016-10-05 18:23:36 -04:00
2016-10-07 18:46:27 -07:00
2016-06-20 12:47:15 -07:00
2016-07-19 17:43:38 +03:00
2016-05-23 17:04:14 -07:00
2016-07-26 16:19:19 -07:00
2016-05-20 17:58:30 -07:00
2016-06-25 09:04:48 -07:00
2016-09-30 10:54:03 +02:00
2016-08-29 08:13:21 -06:00