Hello Minchan On 02/09/2015 07:46 AM, Minchan Kim wrote: > Hello, Michael > > On Fri, Feb 06, 2015 at 04:41:12PM +0100, Michael Kerrisk (man-pages) wrote: >> On 02/05/2015 02:07 AM, Minchan Kim wrote: >>> Hello, >>> >>> On Wed, Feb 04, 2015 at 08:24:27PM +0100, Michael Kerrisk (man-pages) wrote: >>>> On 4 February 2015 at 18:02, Vlastimil Babka <vbabka@xxxxxxx> wrote: >>>>> On 02/04/2015 03:00 PM, Michael Kerrisk (man-pages) wrote: [...] >>> And we should make error section, too. >>> "locked" covers mlock(2) and you said you will add hugetlb. Then, >>> VM_PFNMAP? In that case, it fails. How can we say about VM_PFNMAP? >>> special mapping for some drivers? >> >> I'm open for offers on what to add. > > I suggests from quote "LWN" http://lwn.net/Articles/162860/ > "*special mapping* which is not made up of "normal" pages. > It is usually created by device drivers which map special memory areas > into user space" Thanks. I've added mention of VM_PFNMAP in the discussion of both MADV_DONTNEED and MADV_REMOVE, and noted that both of those operations will give an error when applied to VM_PFNMAP pages. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>