Messages in this thread | | | Date | Tue, 28 Feb 2006 14:20:03 +0900 | From | "Magnus Damm" <> | Subject | Re: Memory compression (again). . help? |
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On 2/28/06, John Richard Moser <nigelenki@comcast.net> wrote: > Hmm, I can't see where the kernel checks to see which pages are least > used. . . . anyone good with the VM can point me in the right direction?
The page reclaim code responsible for shrinking the LRUs code be found in mm/vmscan.c. That file contains a lot of code, my recommendation to you is to have a look at shrink_zone() which is responsible for rotating and shrinking the active and inactive lists.
Also, If you want to compress pages that normally would be swapped out, then I recommend you to have a look at the functions in mm/swap_state.c and see how swap space gets allocated and freed.
If you need to know more about the Linux VM then I recommend you to buy the excellent book "Understanding the Linux Virtual Memory Manager" written by Mel Gorman, ISBN 0-13-145348-3. My copy of that book covers Linux-2.4 and has some comments about 2.6 too.
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