ceph: fix compat_ioctl for ceph_dir_operations

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The ceph_ioctl function is used both for files and directories, but only
the files support doing that in 32-bit compat mode.

On the s390 architecture, there is also a problem with invalid 31-bit
pointers that need to be passed through compat_ptr().

Use the new compat_ptr_ioctl() to address both issues.

Note: When backporting this patch to stable kernels, "compat_ioctl:
add compat_ptr_ioctl()" is needed as well.

Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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This commit is contained in:

Arnd Bergmann 2018-09-11 20:47:23 +02:00

parent 37ecf8b20a

commit 18bd6caaef

2 changed files with 2 additions and 1 deletions

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1

fs/ceph/dir.c

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2

fs/ceph/file.c

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