lkml.org 
[lkml]   [2015]   [Nov]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] 2 zone_pages_reclaimable fixes
Date
Hi,
Johannes had a valid point [1] that zone_pages_reclaimable should contain
isolated pages as well. This is what the first patch does. While I was
there I've realized that the current logic of this function allows for
a large overestimation of the reclaimable memory with anon >> nr_swap_pages
which would be visible especially when the swap is getting short on space.
I think this is a bug and this is fixed in the second patch.

I do not have any particular workload which would show significant misbehavior
because of the current implementation though. We mostly just happen to scan
longer than necessary because zone_reclaimable would keep us looping longer
but I still think it makes sense to fix this regardless.

[1] http://lkml.kernel.org/r/20151123182447.GF13000%40cmpxchg.org



\
 
 \ /
  Last update: 2015-11-24 13:21    [W:0.070 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site