From: Florian Westphal <fw@strlen.de>
Date: Thu, 23 Jul 2015 10:05:38 +0000 (+0200)
Subject: inet: frag: change *_frag_mem_limit functions to take netns_frags as argument
X-Git-Tag: omap-for-v4.3/fixes-merge-window~158^2~32^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e60d245a0be7fdbb723607f1d6621007916b252;p=pandora-kernel.git

inet: frag: change *_frag_mem_limit functions to take netns_frags as argument

Followup patch will call it after inet_frag_queue was freed, so q->net
doesn't work anymore (but netf = q->net; free(q); mem_limit(netf) would).

Tested-by: Frank Schreuder <fschreuder@transip.nl>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 56a3a5685f76..e71ca17024f2 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -141,14 +141,14 @@ static inline int frag_mem_limit(struct netns_frags *nf)
 	return percpu_counter_read(&nf->mem);
 }
 
-static inline void sub_frag_mem_limit(struct inet_frag_queue *q, int i)
+static inline void sub_frag_mem_limit(struct netns_frags *nf, int i)
 {
-	__percpu_counter_add(&q->net->mem, -i, frag_percpu_counter_batch);
+	__percpu_counter_add(&nf->mem, -i, frag_percpu_counter_batch);
 }
 
-static inline void add_frag_mem_limit(struct inet_frag_queue *q, int i)
+static inline void add_frag_mem_limit(struct netns_frags *nf, int i)
 {
-	__percpu_counter_add(&q->net->mem, i, frag_percpu_counter_batch);
+	__percpu_counter_add(&nf->mem, i, frag_percpu_counter_batch);
 }
 
 static inline void init_frag_mem_limit(struct netns_frags *nf)
diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c
index f46e4d1306f2..214d44aef35b 100644
--- a/net/ieee802154/6lowpan/reassembly.c
+++ b/net/ieee802154/6lowpan/reassembly.c
@@ -207,7 +207,7 @@ found:
 	} else {
 		fq->q.meat += skb->len;
 	}
-	add_frag_mem_limit(&fq->q, skb->truesize);
+	add_frag_mem_limit(fq->q.net, skb->truesize);
 
 	if (fq->q.flags == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&
 	    fq->q.meat == fq->q.len) {
@@ -287,7 +287,7 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *prev,
 		clone->data_len = clone->len;
 		head->data_len -= clone->len;
 		head->len -= clone->len;
-		add_frag_mem_limit(&fq->q, clone->truesize);
+		add_frag_mem_limit(fq->q.net, clone->truesize);
 	}
 
 	WARN_ON(head == NULL);
@@ -310,7 +310,7 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *prev,
 		}
 		fp = next;
 	}
-	sub_frag_mem_limit(&fq->q, sum_truesize);
+	sub_frag_mem_limit(fq->q.net, sum_truesize);
 
 	head->next = NULL;
 	head->dev = dev;
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 172234864fec..4473232e4e88 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -328,7 +328,7 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f)
 		fp = xp;
 	}
 	sum = sum_truesize + f->qsize;
-	sub_frag_mem_limit(q, sum);
+	sub_frag_mem_limit(q->net, sum);
 
 	if (f->destructor)
 		f->destructor(q);
@@ -388,7 +388,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
 
 	q->net = nf;
 	f->constructor(q, arg);
-	add_frag_mem_limit(q, f->qsize);
+	add_frag_mem_limit(nf, f->qsize);
 
 	setup_timer(&q->timer, f->frag_expire, (unsigned long)q);
 	spin_lock_init(&q->lock);
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