path: root/ipc
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authorStephen Rothwell <>2018-03-28 18:41:25 +1100
committerEric W. Biederman <>2018-03-28 13:29:57 -0500
commit8ecd2953d0a1b78748b36f5bed6f233f5bd6d6ea (patch)
tree730f647c662bb0845f3318669c00dc9f3dba913b /ipc
parent0d79cbf83be07bb38a1224f47fd0e2b163310442 (diff)
ipc/shm: fix up for struct file no longer being available in shm.h
Stephen Rothewell <> wrote: > 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) 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") Signed-off-by: Stephen Rothwell <> Signed-off-by: Eric W. Biederman <>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions
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