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| author |   Johannes Weiner <hannes@cmpxchg.org> | 2017-05-03 14:52:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-03 15:52:08 -0700 |
| commit | c822f6223d03c2c5b026a21da09c6b6d523258cd (patch) | |
| tree | ac2fdb0a28b2be80c1c1fd407d8a96b6155530e6 /include/linux/mmzone.h | |
| parent | mm: don't avoid high-priority reclaim on memcg limit reclaim (diff) | |
| download | linux-dev-c822f6223d03c2c5b026a21da09c6b6d523258cd.tar.xz linux-dev-c822f6223d03c2c5b026a21da09c6b6d523258cd.zip | |
mm: delete NR_PAGES_SCANNED and pgdat_reclaimable()
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 preceding
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().
Link: http://lkml.kernel.org/r/20170228214007.5621-8-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/mmzone.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d2c50ab6ae40..04e0969966f6 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -149,7 +149,6 @@ enum node_stat_item { NR_UNEVICTABLE, /* " " " " " */ NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */ - NR_PAGES_SCANNED, /* pages scanned since last reclaim */ WORKINGSET_REFAULT, WORKINGSET_ACTIVATE, WORKINGSET_NODERECLAIM, |