Re: [PATCH v4 RESEND net-next] net: socket: use BIT() for MSG_*

On Wed, Mar 17, 2021 at 11:12 PM David Laight [off-list ref] 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