Messages in this thread | | | Date | Thu, 22 May 2014 20:45:04 +0200 | From | Vlastimil Babka <> | Subject | Re: [PATCH 09/19] mm: page_alloc: Use word-based accesses for get/set pageblock bitmaps |
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On 22.5.2014 20:23, Andrew Morton wrote: > 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.
Thanks.
> Miraculously, the patch applies OK to 3.14. And it compiles!
Great, shipping time!
Vlastimil
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