On Tue, Nov 10, 2015 at 12:25:41PM +0200, Matan Barak wrote: > The kernel will do the above fallback if the command is a legacy > command wrapped in an extended command (i.e - no extra flags). > If an application uses one of the extended values, and fall back to > legacy verb on ENOSYS, it'll behave differently after this change: > Re-posting this example: Again, that doesn't seem like a likely case today, the extended verbs added so far don't strike me as optional, and even so, if someone is coding that kind of fall back it is incorrect to just look for ENOSYS, trying to turn on an optional feature could fail for many different reasons. If someone is actually doing this, then we can work around it, but the kernel seems to be a bit more fluid on error returns - probably because people get them so wrong so often :( Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
