netdev - linux-next: build warning after merge of the bpf-next tree

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Date:   Wed, 9 May 2018 14:49:08 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Ahern <dsahern@...il.com>
Subject: linux-next: build warning after merge of the bpf-next tree

Hi all,

After merging the bpf-next tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

In file included from include/linux/dma-mapping.h:5:0,
                 from include/linux/skbuff.h:34,
                 from include/linux/if_ether.h:23,
                 from include/uapi/linux/bpf.h:13,
                 from include/linux/bpf-cgroup.h:6,
                 from include/linux/cgroup-defs.h:22,
                 from include/linux/cgroup.h:28,
                 from include/linux/perf_event.h:57,
                 from include/linux/trace_events.h:10,
                 from include/trace/trace_events.h:20,
                 from include/trace/define_trace.h:96,
                 from drivers/android/binder_trace.h:387,
                 from drivers/android/binder.c:5702:
include/linux/sizes.h:24:0: warning: "SZ_1K" redefined
 #define SZ_1K    0x00000400
drivers/android/binder.c:116:0: note: this is the location of the previous definition
 #define SZ_1K                               0x400
In file included from include/linux/dma-mapping.h:5:0,
                 from include/linux/skbuff.h:34,
                 from include/linux/if_ether.h:23,
                 from include/uapi/linux/bpf.h:13,
                 from include/linux/bpf-cgroup.h:6,
                 from include/linux/cgroup-defs.h:22,
                 from include/linux/cgroup.h:28,
                 from include/linux/perf_event.h:57,
                 from include/linux/trace_events.h:10,
                 from include/trace/trace_events.h:20,
                 from include/trace/define_trace.h:96,
                 from drivers/android/binder_trace.h:387,
                 from drivers/android/binder.c:5702:
include/linux/sizes.h:37:0: warning: "SZ_4M" redefined
 #define SZ_4M    0x00400000
drivers/android/binder.c:120:0: note: this is the location of the previous definition
 #define SZ_4M                               0x400000
fs/ecryptfs/miscdev.c:206:0: warning: "PKT_TYPE_OFFSET" redefined
 #define PKT_TYPE_OFFSET  0
In file included from include/linux/if_ether.h:23:0,
                 from include/uapi/linux/bpf.h:13,
                 from include/linux/bpf-cgroup.h:6,
                 from include/linux/cgroup-defs.h:22,
                 from include/linux/cgroup.h:28,
                 from include/linux/writeback.h:183,
                 from include/linux/backing-dev.h:16,
                 from fs/ecryptfs/ecryptfs_kernel.h:41,
                 from fs/ecryptfs/miscdev.c:30:
include/linux/skbuff.h:753:0: note: this is the location of the previous definition
 #define PKT_TYPE_OFFSET() offsetof(struct sk_buff, __pkt_type_offset)

Introduced by commit

  9c38f3c8b153 ("bpf: Provide helper to do forwarding lookups in kernel FIB table")

-- 
Cheers,
Stephen Rothwell

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