On Thursday 12 April 2007 12:37, Alan Cox wrote: > > + if (PTR_ERR(sa->name) == -ENOENT && (check & AA_CHECK_FD)) > > + denied_mask = 0; > > Now there is an interesting question. Is PTR_ERR() safe for kernel > pointers on all platforms or just for user ones ? It's used for kernel pointers all over the place and mmap also mixes user addresses with -Exxx, so it's definitely supposed to work. I'm not sure how exactly the topmost page is kept from getting mapped. Andreas - 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
