That stuff had just one user, and an exotic one, at that - binfmt_flat on arm and m68k.
The following changes since commit 2ea659a9ef488125eb46da6eb571de5eae5c43f6: Linux 4.12-rc1 (2017-05-13 13:19:49 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.uaccess-unaligned for you to fetch changes up to 3170d8d226c2053355f3946b4b5ded4c006fe6d4: kill {__,}{get,put}_user_unaligned() (2017-07-03 18:44:22 -0400) ---------------------------------------------------------------- Al Viro (2): binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail kill {__,}{get,put}_user_unaligned() arch/arm/include/asm/flat.h | 25 ++- arch/arm/include/asm/uaccess.h | 7 - arch/arm64/include/asm/uaccess.h | 4 - arch/blackfin/include/asm/flat.h | 25 +-- arch/blackfin/kernel/flat.c | 13 +- arch/c6x/include/asm/flat.h | 15 +- arch/h8300/include/asm/flat.h | 24 ++- arch/ia64/include/asm/uaccess.h | 36 ----- arch/m32r/include/asm/flat.h | 19 +-- arch/m68k/include/asm/flat.h | 23 ++- arch/m68k/include/asm/uaccess.h | 7 - arch/microblaze/include/asm/flat.h | 34 ++-- arch/mips/include/asm/uaccess.h | 277 -------------------------------- arch/parisc/include/asm/uaccess.h | 1 - arch/powerpc/include/asm/uaccess.h | 3 - arch/s390/include/asm/uaccess.h | 3 - arch/sh/include/asm/flat.h | 15 +- arch/sparc/include/asm/uaccess_64.h | 1 - arch/tile/include/asm/uaccess.h | 1 - arch/x86/include/asm/uaccess.h | 3 - arch/xtensa/include/asm/flat.h | 15 +- fs/binfmt_flat.c | 39 +++-- include/asm-generic/uaccess-unaligned.h | 26 --- include/linux/flat.h | 2 +- 24 files changed, 168 insertions(+), 450 deletions(-) delete mode 100644 include/asm-generic/uaccess-unaligned.h