Messages in this thread | | | Date | Tue, 11 Aug 2020 17:39:05 +0100 | From | Al Viro <> | Subject | Re: file metadata via fs API (was: [GIT PULL] Filesystem Information) |
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On Tue, Aug 11, 2020 at 09:09:36AM -0700, Linus Torvalds wrote: > On Tue, Aug 11, 2020 at 9:05 AM Al Viro <viro@zeniv.linux.org.uk> wrote: > > > > Except that you suddenly see non-directory dentries get children. > > And a lot of dcache-related logics needs to be changed if that > > becomes possible. > > Yeah, I think you'd basically need to associate a (dynamic) > mount-point to that path when you start doing O_ALT. Or something.
Whee... That's going to be non-workable for xattrs - fgetxattr() needs to work after unlink(). And you'd obviously need to prevent crossing into that sucker on normal lookups, which would add quite a few interesting twists around the automount points.
I'm not saying it's not doable, but it won't be anywhere near straightforward. And API semantics questions are still there...
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