Messages in this thread | | | From | "Hillf Danton" <> | Subject | Re: [PATCH 7/9] mm: delete NR_PAGES_SCANNED and pgdat_reclaimable() | Date | Thu, 02 Mar 2017 11:34:34 +0800 |
| |
On March 01, 2017 5:40 AM Johannes Weiner wrote: > > NR_PAGES_SCANNED counts number of pages scanned since the last page > free event in the allocator. This was used primarily to measure the > reclaimability of zones and nodes, and determine when reclaim should > give up on them. In that role, it has been replaced in the preceeding > patches by a different mechanism. > > Being implemented as an efficient vmstat counter, it was automatically > exported to userspace as well. It's however unlikely that anyone > outside the kernel is using this counter in any meaningful way. > > Remove the counter and the unused pgdat_reclaimable(). > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> > --- Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
| |