Goswin von Brederlow: > For unlink and rmdir you need whiteout files. > > For all the rest you just have to keep the file descriptor(s) alive as > long as the file is opened and cache metadat in the internal FD > structure. > > It isn't trivial but it isn't really hard. Generally it is true. Actually deltafs already has something like whiteout. It is a symlink to "(null)". When a user writes something to the file after unlink+rmdir, where can deltafs copyup? At least in the current implementation, there is no place for it. J. R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
