On Wed, Mar 17, 2021 at 11:12 PM David Laight <david.lai...@aculab.com> wrote: > ... > > Isn't MSG_CMSG_COMPAT an internal value? > Could it be changed to 1u << 30 instead of 1u << 31 ? > Then it wouldn't matter if the high bit of flags got replicated. >
Yeah, MSG_CMSG_COMPAT is an internal value, and maybe it's why it is defined as 1<< 31, to make it look different. I think it's a good idea to change it to other value which is not used, such as 1u<<21. I will test it and resend this patch later, thanks~ With Regards, Menglong Dong
