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[NETNS][FRAGS]: Make the mem counter per-namespace.

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This is also simple, but introduces more changes, since
then mem counter is altered in more places.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2008-01-22 06:07:25 -08:00
committed by David S. Miller
parent e5a2bb842c
commit 6ddc082223
9 changed files with 54 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
net/ipv4/inet_fragment.c
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@@ -63,8 +63,6 @@ void inet_frags_init(struct inet_frags *f)
f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
(jiffies ^ (jiffies >> 6)));
atomic_set(&f->mem, 0);
setup_timer(&f->secret_timer, inet_frag_secret_rebuild,
(unsigned long)f);
f->secret_timer.expires = jiffies + f->ctl->secret_interval;
@@ -75,6 +73,7 @@ EXPORT_SYMBOL(inet_frags_init);
void inet_frags_init_net(struct netns_frags *nf)
{
nf->nqueues = 0;
atomic_set(&nf->mem, 0);
}
EXPORT_SYMBOL(inet_frags_init_net);
@@ -107,13 +106,13 @@ void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f)
EXPORT_SYMBOL(inet_frag_kill);
static inline void frag_kfree_skb(struct inet_frags *f, struct sk_buff *skb,
int *work)
static inline void frag_kfree_skb(struct netns_frags *nf, struct inet_frags *f,
struct sk_buff *skb, int *work)
{
if (work)
*work -= skb->truesize;
atomic_sub(skb->truesize, &f->mem);
atomic_sub(skb->truesize, &nf->mem);
if (f->skb_free)
f->skb_free(skb);
kfree_skb(skb);
@@ -123,22 +122,24 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f,
int *work)
{
struct sk_buff *fp;
struct netns_frags *nf;
BUG_TRAP(q->last_in & COMPLETE);
BUG_TRAP(del_timer(&q->timer) == 0);
/* Release all fragment data. */
fp = q->fragments;
nf = q->net;
while (fp) {
struct sk_buff *xp = fp->next;
frag_kfree_skb(f, fp, work);
frag_kfree_skb(nf, f, fp, work);
fp = xp;
}
if (work)
*work -= f->qsize;
atomic_sub(f->qsize, &f->mem);
atomic_sub(f->qsize, &nf->mem);
if (f->destructor)
f->destructor(q);
@@ -147,12 +148,12 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f,
}
EXPORT_SYMBOL(inet_frag_destroy);
int inet_frag_evictor(struct inet_frags *f)
int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f)
{
struct inet_frag_queue *q;
int work, evicted = 0;
work = atomic_read(&f->mem) - f->ctl->low_thresh;
work = atomic_read(&nf->mem) - f->ctl->low_thresh;
while (work > 0) {
read_lock(&f->lock);
if (list_empty(&f->lru_list)) {
@@ -226,7 +227,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
return NULL;
f->constructor(q, arg);
atomic_add(f->qsize, &f->mem);
atomic_add(f->qsize, &nf->mem);
setup_timer(&q->timer, f->frag_expire, (unsigned long)q);
spin_lock_init(&q->lock);
atomic_set(&q->refcnt, 1);