On Thu, May 29, 2014 at 12:26 PM, David Howells <dhowe...@redhat.com> wrote: > Miklos Szeredi <mik...@szeredi.hu> wrote: > >> Perfect solution would be an invisible temp directory. This needs filesystem >> support, but perhaps not so difficult. Again could be done later without >> backward compatibility issues. > > Maybe make a tempfile and hardlink it into place when complete. That's what > unionmount is doing.
That doesn't work with RENAME_EXCHANGE, which is what overlayfs uses. I think that's a small price to pay for not needing to add whiteout support to every single directory operation. We could also implement RENAME_EXCHANGE with a tmpfile, but then again, I think that may be too much complexity for too little gain. Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
