about memory zone

about memory zone

[sheng qiu]

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Hi everyone,

i am doing some research work that need to utilize the swapping stuff of
linux kernel. i add one separate zone, which only used for my application,
i prevent the other application or kernel from allocating from that zone. i
marked every page that allocated form my zone with reclaimable flag. but
when my zone is nearly full, which will trigger the kswapd to swap out some
pages, the balance_pgdat found the reclaimable pages inside my zone is 0.
because the NR_INACTIVE_FILE, NR_ACTIVE_FILE, NR_INACTIVE_ANON,
NR_ACTIVE_ANON lru list are all empty. i do not know why kernel did not do
any statistics on my own zone.

Does anyone know why this happen? and how to solve this? i need swapping
support on my own zone too.

Thanks,
Sheng

-- 
Sheng Qiu
Texas A & M University
Room 302 Wisenbaker
email: herbert1984106@gmail.com
College Station, TX 77843-3259

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