Debabrata Banerjee c9fbd71f73 netpoll: allow cleanup to be synchronous ... This fixes a problem introduced by: commit 2cde6acd49 ("netpoll: Fix __netpoll_rcu_free so that it can hold the rtnl lock") When using netconsole on a bond, __netpoll_cleanup can asynchronously recurse multiple times, each __netpoll_free_async call can result in more __netpoll_free_async's. This means there is now a race between cleanup_work queues on multiple netpoll_info's on multiple devices and the configuration of a new netpoll. For example if a netconsole is set to enable 0, reconfigured, and enable 1 immediately, this netconsole will likely not work. Given the reason for __netpoll_free_async is it can be called when rtnl is not locked, if it is locked, we should be able to execute synchronously. It appears to be locked everywhere it's called from. Generalize the design pattern from the teaming driver for current callers of __netpoll_free_async. CC: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-10-19 17:01:43 -07:00
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Kconfig	8021q: update description	2014-01-21 17:01:25 -08:00
Makefile	net: remove blank lines at end of file	2018-07-24 14:10:43 -07:00
vlan.c	Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2018-07-03 10:29:26 +09:00
vlan.h	vlan: Add extack messages for link create	2018-05-17 17:08:55 -04:00
vlan_core.c	vlan: vlan_hw_filter_capable() can be static	2018-03-31 23:20:48 -04:00
vlan_dev.c	netpoll: allow cleanup to be synchronous	2018-10-19 17:01:43 -07:00
vlan_gvrp.c	net: vlan: prepare for 802.1ad support	2013-04-19 14:45:27 -04:00
vlan_mvrp.c	net: vlan: prepare for 802.1ad support	2013-04-19 14:45:27 -04:00
vlan_netlink.c	vlan: Add extack messages for link create	2018-05-17 17:08:55 -04:00
vlanproc.c	proc: introduce proc_create_net{,_data}	2018-05-16 07:24:30 +02:00
vlanproc.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00