Messages in this thread | | | Date | Thu, 22 May 2014 11:23:57 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 09/19] mm: page_alloc: Use word-based accesses for get/set pageblock bitmaps |
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On Thu, 22 May 2014 11:24:23 +0200 Vlastimil Babka <vbabka@suse.cz> wrote:
> > In a test running dd onto tmpfs the overhead of the pageblock-related > > functions went from 1.27% in profiles to 0.5%. > > > > Signed-off-by: Mel Gorman <mgorman@suse.de> > > Acked-by: Vlastimil Babka <vbabka@suse.cz> > > Hi, I've tested if this closes the race I've been previously trying to fix > with the series in http://marc.info/?l=linux-mm&m=139359694028925&w=2 > And indeed with this patch I wasn't able to reproduce it in my stress test > (which adds lots of memory isolation calls) anymore. So thanks to Mel I can > dump my series in the trashcan :P > > Therefore I believe something like below should be added to the changelog, > and put to stable as well.
OK, I made it so.
Miraculously, the patch applies OK to 3.14. And it compiles!
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