lkml.org 
[lkml]   [2010]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH 01/19] User-space API definition
    From
    2010/8/20 Stefan Richter <stefanr@s5r6.in-berlin.de>:

    >> +struct ncr_session_input_data {
    >> +     const void __user *data;
    >> +     __kernel_size_t data_size;
    >> +};
    >> +
    >> +};
    > Why not using fixed-size fit-all members?
    > struct ncr_session_input_data {
    >        __u64 data;             /* user pointer, cast to/from u64 */
    >        __u32 data_size;        /* or __u64? */
    > };

    A reason is that using (void*) is cleaner as an API. It avoids the
    pointer to int casting and the warnings that such a cast will have.

    regards,
    Nikos
    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2010-08-21 09:39    [W:0.061 / U:148.612 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site