Messages in this thread | | | From | Satoru Moriya <> | Date | Fri, 14 Oct 2011 01:32:08 -0400 | Subject | RE: [PATCH -v2 -mm] add extra free kbytes tunable |
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On 10/13/2011 01:35 AM, KAMEZAWA Hiroyuki wrote: > > I don't read full story but....how about adding a new syscall like > > == > sys_mem_shrink(int nid, int nr_scan_pages, int flags) > > This system call scans LRU of specified nodes and free pages on LRU. > This scan nr_scan_pages in LRU and returns the number of successfully > freed pages. > == > > Then, running this progam in SCHED_IDLE, a user can make free pages while > the system is idle. If running in the highest priority, a user can keep > free pages as he want. If a user run this under a memcg, user can free > pages in a memcg.
This is interesting. We can make userspace kswapd as we like with this syscall. But it seems harder to be accepted...
Regards, Satoru
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