On Thu, 04 Feb 2010, Bodo Eggert wrote: > Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > > > Additionally, return -EINVAL if an unknown flag is encountered. This > > makes it possible for the caller to determine if a flag is supported > > or not (at least on kernels with this patch). > > There should be a guaranteed-to-be-invalid flag or flag-combination in > order to safely detect this feature. It's difficult though, because the app would have to make sure the detection itself would reliably fail, and with a different error. Simply checking the kernel version might be easier. Thanks, Miklos -- 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
