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mm: remove reclaim and compaction retry approximations

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If per-zone LRU accounting is available then there is no point
approximating whether reclaim and compaction should retry based on pgdat
statistics.  This is effectively a revert of "mm, vmstat: remove zone
and node double accounting by approximating retries" with the difference
that inactive/active stats are still available.  This preserves the
history of why the approximation was retried and why it had to be
reverted to handle OOM kills on 32-bit systems.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Mel Gorman <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mel Gorman 2016-07-28 15:47:31 -07:00 • committed by Linus Torvalds
commit 5a1c84b404
8 changed files with 39 additions and 58 deletions
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1
mm/vmstat.c
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@ -926,6 +926,7 @@ const char * const vmstat_text[] = {
"nr_zone_inactive_file",
"nr_zone_active_file",
"nr_zone_unevictable",
"nr_zone_write_pending",
"nr_mlock",
"nr_slab_reclaimable",
"nr_slab_unreclaimable",