[lkml]   [2018]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: linux-next: build failure after merge of the userns tree
Stephen Rothwell <> writes:

> Hi Eric,
> After merging the userns tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
> In file included from include/linux/sched.h:16:0,
> from arch/powerpc/lib/xor_vmx_glue.c:14:
> include/linux/shm.h:17:35: error: 'struct file' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
> bool is_file_shm_hugepages(struct file *file);
> ^~~~
> and many, many more (most warnings, but some errors - arch/powerpc is
> mostly built with -Werror)
> Maybe caused by commit
> 1a5c1349d105 ("sem: Move struct sem and struct sem_array into ipc/sem.c")
> I have appplied the following fix patch for today:
> From: Stephen Rothwell <>
> Date: Wed, 28 Mar 2018 18:36:27 +1100
> Subject: [PATCH] fix up for struct file no longer being available in shm.h
> Signed-off-by: Stephen Rothwell <>

Applied. With the addition of:

> I dug through this and I discovered that the error was caused by the
> removal of struct shmid_kernel from shm.h when building on powerpc.
> Except for observing the existence of "struct file *shm_file" in
> struct shmid_kernel I have no clue why the structure move would
> cause such a failure. I suspect shm.h always needed the forward
> declaration and someting had been confusing gcc into not issuing the
> warning. --EWB
> Fixes: a2e102cd3cdd ("shm: Move struct shmid_kernel into ipc/shm.c")

Has anyone ever seen anything like that?


 \ /
  Last update: 2018-03-28 20:34    [W:0.023 / U:4.744 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site