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authorSantosh Shilimkar <santosh.shilimkar@oracle.com>2012-02-03 20:09:23 +0400
committerSantosh Shilimkar <ssantosh@kernel.org>2015-09-30 19:43:24 +0300
commit59fe4606748f7016e9e02bbd26da185f8620661a (patch)
tree016296245d4f2e0129d2caecde0e07bacede448f /net
parent6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff)
downloadlinux-59fe4606748f7016e9e02bbd26da185f8620661a.tar.xz
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: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Diffstat (limited to 'net')
-rw-r--r--net/rds/ib.h1
-rw-r--r--net/rds/ib_rdma.c6
2 files changed, 3 insertions, 4 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h
index aae60fda77f6..f1fd5ffec4e1 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 251d1ce0b7c7..872f523630f2 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)