Re: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-05 Thread Christoph Lameter
On Fri, 5 Apr 2013, Minchan Kim wrote: > > >> How about add a knob? > > > > > >Maybe, volunteering? > > > > Hi Minchan, > > > > I can be the volunteer, what I care is if add a knob make sense? > > Frankly sepaking, I'd like to avoid new knob but there might be > some workloads suffered from mlocke

Re: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-05 Thread Minchan Kim
Hi Wanpeng, On Fri, Apr 05, 2013 at 04:22:17PM +0800, Wanpeng Li wrote: > On Fri, Apr 05, 2013 at 05:01:06PM +0900, Minchan Kim wrote: > >On Fri, Apr 05, 2013 at 02:47:25PM +0800, Simon Jeons wrote: > >> Hi Minchan, > >> On 04/03/2013 09:11 AM, Minchan Kim wrote: > >> >On Tue, Apr 02, 2013 at 03:1

Re: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-05 Thread Minchan Kim
On Fri, Apr 05, 2013 at 02:47:25PM +0800, Simon Jeons wrote: > Hi Minchan, > On 04/03/2013 09:11 AM, Minchan Kim wrote: > >On Tue, Apr 02, 2013 at 03:15:23PM -0700, Hugh Dickins wrote: > >>On Tue, 2 Apr 2013, Kirill A. Shutemov wrote: > >>>Kirill A. Shutemov wrote: > From: "Kirill A. Shutemov"

Re: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-04 Thread Simon Jeons
Hi Minchan, On 04/03/2013 09:11 AM, Minchan Kim wrote: On Tue, Apr 02, 2013 at 03:15:23PM -0700, Hugh Dickins wrote: On Tue, 2 Apr 2013, Kirill A. Shutemov wrote: Kirill A. Shutemov wrote: From: "Kirill A. Shutemov" ramfs is the most simple fs from page cache point of view. Let's start trans

RE: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-03 Thread Christoph Lameter
On Tue, 2 Apr 2013, Hugh Dickins wrote: > I am strongly in favour of removing that limitation from > __isolate_lru_page() (and the thread you pointed - thank you - shows Mel > and Christoph were both in favour too); and note that there is no such > restriction in the confusingly similar but differ

Re: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-02 Thread Minchan Kim
On Tue, Apr 02, 2013 at 03:15:23PM -0700, Hugh Dickins wrote: > On Tue, 2 Apr 2013, Kirill A. Shutemov wrote: > > Kirill A. Shutemov wrote: > > > From: "Kirill A. Shutemov" > > > > > > ramfs is the most simple fs from page cache point of view. Let's start > > > transparent huge page cache enablin

RE: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-02 Thread Hugh Dickins
On Tue, 2 Apr 2013, Kirill A. Shutemov wrote: > Kirill A. Shutemov wrote: > > From: "Kirill A. Shutemov" > > > > ramfs is the most simple fs from page cache point of view. Let's start > > transparent huge page cache enabling here. > > > > For now we allocate only non-movable huge page. It's not

RE: [PATCHv2, RFC 20/30] ramfs: enable transparent huge page cache

2013-04-02 Thread Kirill A. Shutemov
Kirill A. Shutemov wrote: > From: "Kirill A. Shutemov" > > ramfs is the most simple fs from page cache point of view. Let's start > transparent huge page cache enabling here. > > For now we allocate only non-movable huge page. It's not yet clear if > movable page is safe here and what need to be