net: use the frag lru_lock to protect netns_frags.nqueues update

Move the protection of netns_frags.nqueues updates under the LRU_lock,
instead of the write lock.  As they are located on the same cacheline,
and this is also needed when transitioning to use per hash bucket locking.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 8ba548a8efce..1206ca64b0ea 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -124,7 +124,6 @@ static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
 {
         write_lock(&f->lock);
         hlist_del(&fq->list);
-        fq->net->nqueues--;
         write_unlock(&f->lock);
         inet_frag_lru_del(fq);
 }
@@ -260,7 +259,6 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
 
         atomic_inc(&qp->refcnt);
         hlist_add_head(&qp->list, &f->hash[hash]);
-        nf->nqueues++;
         write_unlock(&f->lock);
         inet_frag_lru_add(nf, qp);
         return qp;