Christoph Hellwig <hch@xxxxxx> 於 2020年7月10日 週五 下午9:57寫道： > > segment_eq is only used to implement uaccess_kernel. Just open code > uaccess_kernel in the arch uaccess headers and remove one layer of > indirection. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- > arch/alpha/include/asm/uaccess.h | 2 +- > arch/arc/include/asm/segment.h | 3 +-- > arch/arm/include/asm/uaccess.h | 4 ++-- > arch/arm64/include/asm/uaccess.h | 2 +- > arch/csky/include/asm/segment.h | 2 +- > arch/h8300/include/asm/segment.h | 2 +- > arch/ia64/include/asm/uaccess.h | 2 +- > arch/m68k/include/asm/segment.h | 2 +- > arch/microblaze/include/asm/uaccess.h | 2 +- > arch/mips/include/asm/uaccess.h | 2 +- > arch/nds32/include/asm/uaccess.h | 2 +- > arch/nios2/include/asm/uaccess.h | 2 +- > arch/openrisc/include/asm/uaccess.h | 2 +- > arch/parisc/include/asm/uaccess.h | 2 +- > arch/powerpc/include/asm/uaccess.h | 3 +-- > arch/riscv/include/asm/uaccess.h | 4 +--- > arch/s390/include/asm/uaccess.h | 2 +- > arch/sh/include/asm/segment.h | 3 +-- > arch/sparc/include/asm/uaccess_32.h | 2 +- > arch/sparc/include/asm/uaccess_64.h | 2 +- > arch/x86/include/asm/uaccess.h | 2 +- > arch/xtensa/include/asm/uaccess.h | 2 +- > include/asm-generic/uaccess.h | 4 ++-- > include/linux/uaccess.h | 2 -- > 24 files changed, 25 insertions(+), 32 deletions(-) > [...] > diff --git a/arch/nds32/include/asm/uaccess.h b/arch/nds32/include/asm/uaccess.h > index 3a9219f53ee0d8..010ba5f1d7dd6b 100644 > --- a/arch/nds32/include/asm/uaccess.h > +++ b/arch/nds32/include/asm/uaccess.h > @@ -44,7 +44,7 @@ static inline void set_fs(mm_segment_t fs) > current_thread_info()->addr_limit = fs; > } > > -#define segment_eq(a, b) ((a) == (b)) > +#define uaccess_kernel() (get_fs() == KERNEL_DS) > > #define __range_ok(addr, size) (size <= get_fs() && addr <= (get_fs() -size)) > Hi Christoph, Thank you. Acked-by: Greentime Hu <green.hu@xxxxxxxxx>
