Messages in this thread |  | | Date | Sun, 15 Aug 2004 16:58:27 -0700 | | From | "David S. Miller" <> | | Subject | Re: page fault fastpath: Increasing SMP scalability by introducing pte locks? |
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On Sun, 15 Aug 2004 15:58:27 -0700 (PDT) Christoph Lameter <clameter@sgi.com> wrote:
> On Sun, 15 Aug 2004, David S. Miller wrote: > > > > > Is the read lock in the VMA semaphore enough to let you do > > the pgd/pmd walking without the page_table_lock? > > I think it is, but just checking. > > That would be great.... May I change the page_table lock to > be a read write spinlock instead?
No, I means "is the read long _ON_ the VMA semaphore". The VMA semaphore is a read/write semaphore, and we grab it for reading in the code path you're modifying.
Please don't change page_table_lock to a rwlock, it's only needed for write accesses. - 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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