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netprio_cgroup: define sk_cgrp_prioidx only if NETPRIO_CGROUP is enabled

sock->sk_cgrp_prioidx won't be used at all if CONFIG_NETPRIO_CGROUP=n.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1 parent ccb6e98 commit 3d0dcfbd8fa2a1e63fabb5f8edac8b8a27860d98 @lizf-os lizf-os committed with davem330 Dec 25, 2012
Showing with 1 addition and 1 deletion.
  1. +1 −1 include/net/sock.h
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@@ -367,7 +367,7 @@ struct sock {
unsigned short sk_ack_backlog;
unsigned short sk_max_ack_backlog;
__u32 sk_priority;
-#ifdef CONFIG_CGROUPS
+#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
__u32 sk_cgrp_prioidx;
#endif
struct pid *sk_peer_pid;

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