On Fri, 20 Apr 2007, William Lee Irwin III wrote: > > On Fri, Apr 20, 2007 at 09:30:30AM -0700, Christoph Lameter wrote: > > We can map arbitrary 4k chunks of larger pages. > > The core VM can do that but the hugetlb architectural code can't fall > back to smaller page sizes. It also should not be put into a situation > where it needs to do so given the semantics it must honor.
Wel we could potentially add a handle_pmd_fault to the vm...? > Also, the final assertion is inaccurate. Fault handlers must instantiate > pages of order mapping->order when faulting in a page of a file with > a given pagecache size. The semantics of faulting and mmap()'ing are Why? I agree that the page state of the higher order page must be updated consistently but one can use a pte to map a 4k chunk of a higher order page. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
