xfrm: policy: don't acquire policy lock in xfrm_spd_getinfo

It doesn't seem that important.

We now get inconsistent view of the counters, but those are stale anyway
right after we drop the lock.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 3d27b9a..35b85a9 100644 (file)
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -560,7 +560,6 @@ static inline int xfrm_byidx_should_resize(struct net *net, int total)
 
 void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si)
 {
-       read_lock_bh(&net->xfrm.xfrm_policy_lock);
        si->incnt = net->xfrm.policy_count[XFRM_POLICY_IN];
        si->outcnt = net->xfrm.policy_count[XFRM_POLICY_OUT];
        si->fwdcnt = net->xfrm.policy_count[XFRM_POLICY_FWD];
@@ -569,7 +568,6 @@ void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si)
        si->fwdscnt = net->xfrm.policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
        si->spdhcnt = net->xfrm.policy_idx_hmask;
        si->spdhmcnt = xfrm_policy_hashmax;
-       read_unlock_bh(&net->xfrm.xfrm_policy_lock);
 }
 EXPORT_SYMBOL(xfrm_spd_getinfo);