From 2f09a4d5daaa36690d506fafda9c24f2be866f6b Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sat, 14 Aug 2010 22:38:09 -0700 Subject: xfrm: Use GFP_ATOMIC in xfrm_compile_policy As xfrm_compile_policy runs within a read_lock, we cannot use GFP_KERNEL for memory allocations. Reported-by: Luca Tettamanti Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/xfrm/xfrm_user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index ba59983..b14ed4b 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -2504,7 +2504,7 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt, if (p->dir > XFRM_POLICY_OUT) return NULL; - xp = xfrm_policy_alloc(net, GFP_KERNEL); + xp = xfrm_policy_alloc(net, GFP_ATOMIC); if (xp == NULL) { *dir = -ENOBUFS; return NULL; -- cgit v1.1 From f3d3f616e35db2ceeb11564eafd50759bb5bca8a Mon Sep 17 00:00:00 2001 From: Min Zhang Date: Sat, 14 Aug 2010 22:42:51 -0700 Subject: ipv6: remove sysctl jiffies conversion on gc_elasticity and min_adv_mss sysctl output ipv6 gc_elasticity and min_adv_mss as values divided by HZ. However, they are not in unit of jiffies, since ip6_rt_min_advmss refers to packet size and ip6_rt_fc_elasticity is used as scaler as in expire>>ip6_rt_gc_elasticity, so replace the jiffies conversion handler will regular handler for them. This has impact on scripts that are currently working assuming the divide by HZ, will yield different results with this patch in place. Signed-off-by: Min Zhang Signed-off-by: David S. Miller --- net/ipv6/route.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 8f2d040..d126365 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2580,7 +2580,7 @@ ctl_table ipv6_route_table_template[] = { .data = &init_net.ipv6.sysctl.ip6_rt_gc_elasticity, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec_jiffies, + .proc_handler = proc_dointvec, }, { .procname = "mtu_expires", @@ -2594,7 +2594,7 @@ ctl_table ipv6_route_table_template[] = { .data = &init_net.ipv6.sysctl.ip6_rt_min_advmss, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec_jiffies, + .proc_handler = proc_dointvec, }, { .procname = "gc_min_interval_ms", -- cgit v1.1 From daa3766e705c2605bd7f63b80c7742014ef9e04e Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 15 Aug 2010 23:21:50 -0700 Subject: Revert "netlink: netlink_recvmsg() fix" This reverts commit 1235f504aaba2ebeabc863fdb3ceac764a317d47. It causes regressions worse than the problem it was trying to fix. Eric will try to solve the problem another way. Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) (limited to 'net') diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 2cbf380..8648a99 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1406,7 +1406,7 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock, struct netlink_sock *nlk = nlk_sk(sk); int noblock = flags&MSG_DONTWAIT; size_t copied; - struct sk_buff *skb; + struct sk_buff *skb, *frag __maybe_unused = NULL; int err; if (flags&MSG_OOB) @@ -1441,21 +1441,7 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock, kfree_skb(skb); skb = compskb; } else { - /* - * Before setting frag_list to NULL, we must get a - * private copy of skb if shared (because of MSG_PEEK) - */ - if (skb_shared(skb)) { - struct sk_buff *nskb; - - nskb = pskb_copy(skb, GFP_KERNEL); - kfree_skb(skb); - skb = nskb; - err = -ENOMEM; - if (!skb) - goto out; - } - kfree_skb(skb_shinfo(skb)->frag_list); + frag = skb_shinfo(skb)->frag_list; skb_shinfo(skb)->frag_list = NULL; } } @@ -1492,6 +1478,10 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock, if (flags & MSG_TRUNC) copied = skb->len; +#ifdef CONFIG_COMPAT_NETLINK_MESSAGES + skb_shinfo(skb)->frag_list = frag; +#endif + skb_free_datagram(sk, skb); if (nlk->cb && atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf / 2) -- cgit v1.1