On Sat, 2024-06-22 at 15:41 -0700, Linus Torvalds wrote:

I do think that we should make AT_EMPTY_PATH with a NULL path
"JustWork(tm)", because the stupid "look if the pathname is empty" is
horrible.

But moving that check into getname() is *NOT* the right answer,
because by the time you get to getname(), you have already lost.

Oops.  I'll try to get around of getname() too...

So the short-cut in vfs_fstatat() to never get a pathname is
disgusting - people should have used 'fstat()' - but it's _important_
disgusting.

The problem is we don't have fstat() for LoongArch, and it'll be
unusable on all 32-bit arch after 2037.

And Arnd hates the idea adding fstat() for LoongArch because there would
be one more 32-bit arch broken in 2037.

Or should we just add something like "fstat_2037()"?

-- 
Xi Ruoyao [off-list ref]
School of Aerospace Science and Technology, Xidian University