Messages in this thread | | | Date | Tue, 15 Jun 2010 10:55:22 -0400 | From | Rik van Riel <> | Subject | Re: [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible |
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On 06/15/2010 10:51 AM, Mel Gorman wrote: > On Tue, Jun 15, 2010 at 04:00:11PM +0200, Andrea Arcangeli wrote: >> Hi Mel, >> >> I know lots of people doesn't like direct reclaim, > > It's not direct reclaim that is the problem per-se, it's direct reclaim > calling writepage and splicing two potentially deep call chains > together.
I have talked to Mel on IRC, and the above means:
"calling alloc_pages from an already deep stack frame, and then going into direct reclaim"
That explanation would have been helpful in email :)
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