IB/core: const'ify inbuf in struct ib_udata
Userspace input buffer is not modified by kernel, so it can be 'const'. This is also a prerequisite to remove the implicit cast from INIT_UDATA(). Link: http://marc.info/?i=cover.1386798254.git.ydroneaud@opteya.com> Signed-off-by: NYann Droneaud <ydroneaud@opteya.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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