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Commit 59fe4606 authored by Santosh Shilimkar's avatar Santosh Shilimkar Committed by Santosh Shilimkar
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RDS: use kfree_rcu in rds_ib_remove_ipaddr 



synchronize_rcu() slowing down un-necessarily the socket shutdown
path. It is used just kfree() the ip addresses in rds_ib_remove_ipaddr()
which is perfect usecase for kfree_rcu();

So lets use that to gain some speedup.

Signed-off-by: default avatarSantosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
parent 6ff33f39

net/rds/ib.h

+1 −0
Original line number Diff line number Diff line
@@ -164,6 +164,7 @@ struct rds_ib_connection { 
struct rds_ib_ipaddr {

	struct list_head	list;

	__be32			ipaddr;

	struct rcu_head		rcu;

};



struct rds_ib_device {

net/rds/ib_rdma.c

+2 −4
Original line number Diff line number Diff line
@@ -159,10 +159,8 @@ static void rds_ib_remove_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr) 
	}

	spin_unlock_irq(&rds_ibdev->spinlock);



	if (to_free) {

		synchronize_rcu();

		kfree(to_free);

	}

	if (to_free)

		kfree_rcu(to_free, rcu);

}



int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr)