Messages in this thread | | | Date | Wed, 01 Sep 2004 08:53:04 +0900 | From | Hiroyuki KAMEZAWA <> | Subject | Re: [Lhms-devel] Re: [RFC] buddy allocator without bitmap(2) [0/3] |
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Andrew Morton wrote:
> Hiroyuki KAMEZAWA <kamezawa.hiroyu@jp.fujitsu.com> wrote: > >>Because I had to record some information about shape of mem_map, I used PG_xxx bit. >>1 bit is maybe minimum consumption. > > > The point is that we're running out of bits in page.flags. > yes.
> You should be able to reuse an existing bit for this application. PG_lock would suit.
Hmm... PG_buddyend pages in the top of mem_map can be allocated and used as normal pages ,which can be used for Disk I/O.
If I make them as victims to buddy allocator and don't allow to use them, I can reuse an existing bit.
I'll consider more.
--Kame
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