Messages in this thread | | | Date | Thu, 8 Jun 2006 13:10:11 -0700 | From | "Nate Diller" <> | Subject | Re: [PATCH] mm: tracking dirty pages -v6 |
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On 6/8/06, Peter Zijlstra <a.p.zijlstra@chello.nl> wrote: > > From: Peter Zijlstra <a.p.zijlstra@chello.nl> > > People expressed the need to track dirty pages in shared mappings. > > Linus outlined the general idea of doing that through making clean > writable pages write-protected and taking the write fault. > > This patch does exactly that, it makes pages in a shared writable > mapping write-protected. On write-fault the pages are marked dirty and > made writable. When the pages get synced with their backing store, the > write-protection is re-instated.
Does this mean that processes dirtying pages via mmap are now subject to write throttling? That could dramatically change the performance for tasks with a working set larger than 10% of memory.
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