Re: Active Memory Defragmentation: Our implementation & problems

From: IWAMOTO Toshihiro (iwamoto_at_valinux.co.jp)
Date: 02/04/04

  • Next message: Dave Hansen: "Re: Active Memory Defragmentation: Our implementation & problems" 
    Date:	Wed, 04 Feb 2004 15:57:16 +0900
To: Dave Hansen <haveblue@us.ibm.com>

    At 03 Feb 2004 21:54:34 -0800,
    Dave Hansen wrote:
    > Moving file-backed pages is mostly handled already. You can do a
    > regular page-cache lookup with find_get_page(), make your copy,
    > invalidate the old one, then readd the new one. The invalidation can be
    > done in the same style as shrink_list().

    Actually, it is a bit more complicated.
    I have implemented similar functionality for memory hotremoval.

    See my post about memory hotremoval
    http://marc.theaimsgroup.com/?l=linux-kernel&m=107354781130941&w=2
    for details.
    remap_onepage() and remapd() in the patch are the main functions. 

    --
IWAMOTO Toshihiro
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