Messages in this thread | | | Date | Fri, 27 Aug 2004 17:19:11 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: page fault scalability patch final : i386 tested, x86_64 support added |
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That is still 2^(32+12) = 2^44 = 16TB.
On Sat, 28 Aug 2004, Andi Kleen wrote:
> > Index: linux-2.6.9-rc1/include/linux/sched.h > > =================================================================== > > --- linux-2.6.9-rc1.orig/include/linux/sched.h 2004-08-25 10:50:12.534021000 -0700 > > +++ linux-2.6.9-rc1/include/linux/sched.h 2004-08-27 12:14:09.564008624 -0700 > > @@ -197,9 +197,10 @@ > > pgd_t * pgd; > > atomic_t mm_users; /* How many users with user space? */ > > atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ > > + atomic_t mm_rss; /* Number of pages used by this mm struct */ > > atomic_t is normally 32bit, even on a 64bit arch. This will limit the max > memory size per process to 2^(32+PAGE_SHIFT). I don't think that's a good idea. > > On some architectures it used to be 24bit only even, but I think that > has been fixed. > > I think you need atomic64_t > > -Andi > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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