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    Subject[RFC v2 -tip 0/3] x86: reduce fixup of uaccess
    This patch series redues fixup code for exceptions of uaccess in signal.

    There is a lot of fixup code which is generated by using __{get|put}_user.
    I think that code can be reduced. The concept is that to add uaccess_err in
    thread_info and set it to -EFAULT on exception, finally check this value on
    the last of function.

    The code size reductions are below;
    $ size *signal*.o.*
    text data bss dec hex filename
    4596 0 0 4596 11f4 ia32_signal.o.new
    6006 0 0 6006 1776 ia32_signal.o.old
    3583 0 0 3583 dff signal.o.new
    4540 0 0 4540 11bc signal.o.old
    3863 0 0 3863 f17 signal32.o.new
    4876 0 0 4876 130c signal32.o.old
    [ signal32.o means signal.o on 32-bit. ]

    ChangeLog v1 -> v2
    - Change framework syntax. Previous version doesn't look easy to read.
    Remove parens from try and add redundant braces as Peter suggested.
    get_user_try {
    get_user_ex(...);
    :
    } get_user_catch(err);
    - Remove double underscores.



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