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| author | Mel Gorman <mgorman@techsingularity.net> | 2016-07-28 15:46:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-28 16:07:41 -0700 |
| commit | e6cbd7f2efb433d717af72aa8510a9db6f7a7e05 (patch) | |
| tree | 579fde32463c0885123d14a119dfecf968b26a16 /mm/vmstat.c | |
| parent | e5146b12e2d02af04608301c958d95b2fc47a0f9 (diff) | |
| download | linux-e6cbd7f2efb433d717af72aa8510a9db6f7a7e05.tar.gz linux-e6cbd7f2efb433d717af72aa8510a9db6f7a7e05.tar.bz2 linux-e6cbd7f2efb433d717af72aa8510a9db6f7a7e05.zip | |
mm, page_alloc: remove fair zone allocation policy
The fair zone allocation policy interleaves allocation requests between
zones to avoid an age inversion problem whereby new pages are reclaimed
to balance a zone. Reclaim is now node-based so this should no longer
be an issue and the fair zone allocation policy is not free. This patch
removes it.
Link: http://lkml.kernel.org/r/1467970510-21195-30-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index bc94968400d0..ab7f78995c89 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -921,7 +921,6 @@ int fragmentation_index(struct zone *zone, unsigned int order) const char * const vmstat_text[] = { /* enum zone_stat_item countes */ "nr_free_pages", - "nr_alloc_batch", "nr_zone_anon_lru", "nr_zone_file_lru", "nr_zone_write_pending", @@ -1632,10 +1631,9 @@ int vmstat_refresh(struct ctl_table *table, int write, val = atomic_long_read(&vm_zone_stat[i]); if (val < 0) { switch (i) { - case NR_ALLOC_BATCH: case NR_PAGES_SCANNED: /* - * These are often seen to go negative in + * This is often seen to go negative in * recent kernels, but not to go permanently * negative. Whilst it would be nicer not to * have exceptions, rooting them out would be |