On Fri, Nov 11, 2011 at 12:31 PM, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 2011-11-10 at 18:09 -0800, Hugh Dickins wrote: >> It was in this mail below, when Andrew sent Linus the patch, and Linus >> opposed my "argument" in support: that wasn't on lkml or linux-mm, >> but I don't see that its privacy needs protecting. >> >> KOSAKI-san then sent instead a patch to correct some ints to longs, >> which Linus did put in: but changing them to a new "vm_flags_t". >> >> He was, I think, hoping that one of us would change all the other uses >> of unsigned long vm_flags to vm_flags_t; but in fact none of us has >> stepped up yet - yeah, we're still sulking that we didn't get our >> shiny new 64-bit vm_flags ;) >> >> I think Linus is not opposed to PowerPC and others defining a 64-bit >> vm_flags_t if you need it, but wants not to bloat the x86_32 vma. >> >> I'm still wary of the contortions we go to in constraining flags, >> and feel that the 32-bit case holds back the 64-bit, which would >> not itself be bloated at all. >> >> The subject is likely to come up again, more pressingly, with page >> flags. > > Right, tho the good first step is to convert everything to vm_flags_t so > we can easily switch if we want to, even on a per-arch basis... > > Oh well, now all we need is a volunteer :-) Maybe a "Kernel Common Resource Authority" is needed for all similar requests, just like IANA for IP addresses... :) Thanks, Nai > > Cheers, > Ben. > > > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>