New version is at: git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git #redirect
News: - it actually should work in all cases - when rename is not cross directory, just store the new name instead of a full path, as suggested by Amir - when redirect path is too long fall back to EXDEV (the max length should probably be a module param) About turning the feature on or off. Yes, maybe the empty checking is too complicated. Going one simpler: - default to old behavior, turn on with mount option - add module option and kernel compile option to turn on the feature by default I guess distros wil simply enable this by default, since back compatibility is basically a non-issue. Thanks, Miklos
