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Groups > linux.kernel > #1210499
| From | Mel Gorman <mgorman@techsingularity.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 03/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing |
| Date | 2015-08-20 15:50 +0200 |
| Message-ID | <pZyod-6xg-51@gated-at.bofh.it> (permalink) |
| References | <pWBLz-1Xg-7@gated-at.bofh.it> <pWBLA-1Xg-29@gated-at.bofh.it> <pZxs5-57Q-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Aug 20, 2015 at 02:45:27PM +0200, Michal Hocko wrote: > On Wed 12-08-15 11:45:28, Mel Gorman wrote: > > File-backed pages that will be immediately are balanced between zones but > ^written to... > > > it's unnecessarily expensive. > > to do WHAT? I guess you meant checking gfp_mask resp. alloc_mask? I > doubt it would make a noticeable difference as this is a slow path > already but I agree it doesn't make sense to check it again. > File-backed pages that will be immediately written are balanced between zones. This heuristic tries to avoid having a single zone filled with recently dirtied pages but the checks are unnecessarily expensive. Move consider_zone_balanced into the alloc_context instead of checking bitmaps multiple times. The patch also gives the parameter a more meaningful name. ? -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH 03/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Mel Gorman <mgorman@techsingularity.net> - 2015-08-12 12:50 +0200
Re: [PATCH 03/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Michal Hocko <mhocko@kernel.org> - 2015-08-20 14:50 +0200
Re: [PATCH 03/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Mel Gorman <mgorman@techsingularity.net> - 2015-08-20 15:50 +0200
Re: [PATCH 03/10] mm, page_alloc: Remove unnecessary recalculations for dirty zone balancing Michal Hocko <mhocko@kernel.org> - 2015-08-20 16:30 +0200
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