On Friday 13 May 2016 07:28:29 Richard Sharpe wrote: > On Mon, May 9, 2016 at 6:09 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > > On Thursday 05 May 2016 21:00:18 Steve French wrote: > >> On Thu, May 5, 2016 at 5:54 PM, Steve French <smfrench@xxxxxxxxx> wrote: > >> > On Wed, May 4, 2016 at 8:46 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > >> >> I've discussed this with Deepa in the past, as she is driving the > >> >> convertion of the inode timestamps to timespec64 now, and we will > >> >> need a new version of utimensat for her work as well. I can see good > >> >> reasons either way (allowing updates of btime or disallowing them). > >> > > >> It would help interop with Windows (and presumably Mac) if birth time can be > >> updated > > > > Ok, thanks. That is certainly a good reason in favor. > > > > If nothing else comes up, I guess we can prepare a patch for a new > > utimensat variant to do this and wait for more comments on that. In the meantime I found this LWN article at https://lwn.net/Articles/397442/ Apparently there was a discussion about 6 years ago, without a real conclusion. > Isn't there also a strong case for a setattr call that allows us to > atomically set a collection of attributes from userspace? > > It would seem that network file systems (the clients) could use such features. I had not heard of this before, but that is obviously another option. Most of the attributes returned by xstat are read-only, but I guess this would include uid, gid, {a,b,c,m}time and mode (but not size) along with a 'valid' mask that decides what to set (as in notify_change), right? Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
