* Jan Kara: > On Thu 18-10-18 01:15:13, Amir Goldstein wrote: >> FYI, I identified a similar anti-pattern in fanotify UAPI when I wanted to >> add new flags and did not want to change the UAPI _ALL_ constants. >> This is how we plan to solve it: >> https://github.com/amir73il/linux/commit/8c2b1acadb88ee4505ccc8bfdc665863111fb4cc > > Yeah, after fanotify experience I find foo_ALL constants useless if not > dangerous for userspace. Kernel internal constants like this are IMO > useful.
There are also various *_MAX constants which are increased regularly. Some of them are part of the UAPI headers (INET_DIAG_MAX appears to be a relevant example), some are no longer in UAPI, but still in custom glibc headers (AF_MAX/PF_MAX). These appear to be equally useless.
