Messages in this thread | | | Date | Wed, 9 Mar 2005 15:02:54 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: Page Fault Scalability patch V19 [4/4]: Drop use of page_table_lock in do_anonymous_page |
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On Wed, 9 Mar 2005, Andi Kleen wrote:
> I still think it's a bad idea to add arbitary process size limits like this:
The limit is pretty high: 2^31*PAGE_SIZE bytes. For the standard 4k pagesize this will be >8TB.
> > > > +#ifdef CONFIG_ATOMIC_TABLE_OPS > > +/* > > + * Atomic page table operations require that the counters are also > > + * incremented atomically > > +*/ > > +#define set_mm_counter(mm, member, value) atomic_set(&(mm)->member, value) > > +#define get_mm_counter(mm, member) ((unsigned long)atomic_read(&(mm)->member)) > > +#define update_mm_counter(mm, member, value) atomic_add(value, &(mm)->member) > > +#define MM_COUNTER_T atomic_t > > Can you use atomic64_t on 64bit systems at least?
If atomic64_t is available on all 64 bit systems then its no problem. - 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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