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: Santosh Shilimkar <ssant...@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilim...@oracle.com>
---
net/rds/ib.h | 1 +
net/rds/ib_rdma.c | 6 ++----
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/rds/ib.h b/net/rds/ib.h
index aae60fd..f1fd5ff 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -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 {
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 251d1ce..872f523 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -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)
--
1.9.1
--
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