Messages in this thread |  | | Date | Thu, 10 May 2001 15:49:05 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: [PATCH] allocation looping + kswapd CPU cycles |
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On Thu, 10 May 2001, Stephen C. Tweedie wrote:
> Hi, > > On Thu, May 10, 2001 at 03:22:57PM -0300, Marcelo Tosatti wrote: > > > Initially I thought about __GFP_FAIL to be used by writeout routines which > > want to cluster pages until they can allocate memory without causing any > > pressure to the system. Something like this: > > > > while ((page = alloc_page(GFP_FAIL)) > > add_page_to_cluster(page); > > write_cluster(); > > Isn't that an orthogonal decision? You can use __GFP_FAIL with or > without __GFP_WAIT or __GFP_IO, whichever is appropriate.
Correct.
Back to the main discussion --- I guess we could make __GFP_FAIL (with __GFP_WAIT set :)) allocations actually fail if "try_to_free_pages()" does not make any progress (ie returns zero). But maybe thats a bit too extreme.
What do you think?
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