[Patch:RFC] New zone ZONE_EASY_RECLAIM[0/5]

[Yasunori Goto <y-goto@jp.fujitsu.com>]

Hello.

I rewrote patches to create new zone as ZONE_EASY_RECLAIM.

Probably, many guys of here remember the discussion about
Mel-san's "fragmentation avoidance" patch in the last week.
In the discussion, another way was creating new zone like these patch
which I posted one years ago. 

http://sourceforge.net/mailarchive/forum.php?thread_id=5969508&forum_id=223

My motivation of creating new zone was for memory hotplug.
(Previous name of the zone was ZONE_REMOVABLE.)
It aimed to collect the page which was difficult for removing on few nodes,
and it made other nodes this zone to be removed easier.

But, I thought Mell-san's patch is also useful for this purpose.
So, I stopped my work about it after his patch was introduced.
Howerver unfortunately, Linus-san didn't agree his patches at last week.
So, I felt my old work should be restarted.

Frankly, I don't see that my patch set is/will be the best way
for others. My patch didn't concern about fragmentation.
And this patch has pros and cons as Mel-san said.
But I realize each persons are expecting against new zone for each reason.
So, I changed the name of new zone as ZONE_EASY_RECLAIM.
I wish this become good start point for them to be able to be happy.

This patch is for 2.6.14.

Please comment.

Thanks.

-- 
Yasunori Goto 


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