Messages in this thread | | | From | Neil Brown <> | Date | Wed, 15 Oct 2003 15:46:11 +1000 | Subject | Re: Strange dcache memory pressure when highmem enabled |
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On Tuesday October 14, akpm@osdl.org wrote: > Neil Brown <neilb@cse.unsw.edu.au> wrote: > > > > I noticed that shrink_caches calls shrink_dcache_memory independant > > of the classzone that is being shrunk. So if we are trying to > > shrink ZONE_HIGHMEM, the dentry_cache is shrunk, even though the > > dentry_cache doesn't live in highmem. However I'm not sure if I have > > understood the classzones well enough for that observation even to > > make sense. > > Makes heaps of sense. Here's an instabackport of what we did in > 2.6:
Hey!!! That's what I call *Service*.
I'll give it a try tomorrow (let the poor students get a feeling of stability first before I start changing things again :-)
> + if (classzone - classzone->zone_pgdat->node_zones < > + ZONE_HIGHMEM) {
That's the bit I was missing. I feel that once I fully understand that, I will be a long way towards understanding the zones memory management :-)
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