Re: [PATCH 4/4] pagemap: document KPF_THP and make page-types awareof it

From: KOSAKI Motohiro
Date: Thu Dec 29 2011 - 23:02:29 EST


(12/21/11 5:23 PM), Naoya Horiguchi wrote:
> page-types, which is a common user of pagemap, gets aware of thp
> with this patch. This helps system admins and kernel hackers know
> about how thp works.
> Here is a sample output of page-types over a thp:
>
> $ page-types -p<pid> --raw --list
>
> voffset offset len flags
> ...
> 7f9d40200 3f8400 1 ___U_lA____Ma_bH______t____________
> 7f9d40201 3f8401 1ff ________________T_____t____________
>
> flags page-count MB symbolic-flags long-symbolic-flags
> 0x0000000000410000 511 1 ________________T_____t____________ compound_tail,thp
> 0x000000000040d868 1 0 ___U_lA____Ma_bH______t____________ uptodate,lru,active,mmap,anonymous,swapbacked,compound_head,thp
>
> Signed-off-by: Naoya Horiguchi<n-horiguchi@xxxxxxxxxxxxx>
> Acked-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>

Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>


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