diff options
| author | Pavel Emelyanov <xemul@openvz.org> | 2008-01-22 17:11:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-29 02:10:39 +0300 |
| commit | 3140c25c82106645a6b1fc469dab7006a1d09fd0 (patch) | |
| tree | cbf97e7138610c1f1f0ad4528d59b4bbd14039c7 /net/ipv4 | |
| parent | 3b4bc4a2bfe80d01ebd4f2b6dcc58986c970ed16 (diff) | |
| download | linux-3140c25c82106645a6b1fc469dab7006a1d09fd0.tar.xz | |
[NETNS][FRAGS]: Make the LRU list per namespace.
The inet_frags.lru_list is used for evicting only, so we have
to make it per-namespace, to evict only those fragments, who's
namespace exceeded its high threshold, but not the whole hash.
Besides, this helps to avoid long loops in evictor.
The spinlock is not per-namespace because it protects the
hash table as well, which is global.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/inet_fragment.c | 8 | ||||
| -rw-r--r-- | net/ipv4/ip_fragment.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index fcf5252166fa..f1b95e128772 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -57,7 +57,6 @@ void inet_frags_init(struct inet_frags *f) for (i = 0; i < INETFRAGS_HASHSZ; i++) INIT_HLIST_HEAD(&f->hash[i]); - INIT_LIST_HEAD(&f->lru_list); rwlock_init(&f->lock); f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^ @@ -74,6 +73,7 @@ void inet_frags_init_net(struct netns_frags *nf) { nf->nqueues = 0; atomic_set(&nf->mem, 0); + INIT_LIST_HEAD(&nf->lru_list); } EXPORT_SYMBOL(inet_frags_init_net); @@ -156,12 +156,12 @@ int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f) work = atomic_read(&nf->mem) - nf->low_thresh; while (work > 0) { read_lock(&f->lock); - if (list_empty(&f->lru_list)) { + if (list_empty(&nf->lru_list)) { read_unlock(&f->lock); break; } - q = list_first_entry(&f->lru_list, + q = list_first_entry(&nf->lru_list, struct inet_frag_queue, lru_list); atomic_inc(&q->refcnt); read_unlock(&f->lock); @@ -211,7 +211,7 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf, atomic_inc(&qp->refcnt); hlist_add_head(&qp->list, &f->hash[hash]); - list_add_tail(&qp->lru_list, &f->lru_list); + list_add_tail(&qp->lru_list, &nf->lru_list); nf->nqueues++; write_unlock(&f->lock); return qp; diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 00646ed451f5..29b4b0972e44 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -441,7 +441,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb) return ip_frag_reasm(qp, prev, dev); write_lock(&ip4_frags.lock); - list_move_tail(&qp->q.lru_list, &ip4_frags.lru_list); + list_move_tail(&qp->q.lru_list, &qp->q.net->lru_list); write_unlock(&ip4_frags.lock); return -EINPROGRESS; |