Unverified Commit 8c008792 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!7674 net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BAJJSF2YM66X5KSQ77LHZC4HOALBE62X/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9QGJZ 
 
Link:https://gitee.com/openeuler/kernel/pulls/7674

 

Reviewed-by: default avatarYue Haibing <yuehaibing@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 80a0681e c999ef0c

net/smc/smc_pnet.c

+10 −0
Original line number Diff line number Diff line
@@ -797,6 +797,16 @@ static void smc_pnet_create_pnetids_list(struct net *net) 
	u8 ndev_pnetid[SMC_MAX_PNETID_LEN];

	struct net_device *dev;



	/* Newly created netns do not have devices.

	 * Do not even acquire rtnl.

	 */

	if (list_empty(&net->dev_base_head))

		return;



	/* Note: This might not be needed, because smc_pnet_netdev_event()

	 * is also calling smc_pnet_add_base_pnetid() when handling

	 * NETDEV_UP event.

	 */

	rtnl_lock();

	for_each_netdev(net, dev)

		smc_pnet_add_base_pnetid(net, dev, ndev_pnetid);