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| author | Johannes Weiner <hannes@cmpxchg.org> | 2014-08-06 16:06:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 18:01:18 -0700 |
| commit | 8d07429319b2836604061f48f7e3dfe78acc060c (patch) | |
| tree | ac2d767e082d261d2343aa1db80ed9e3fecf4e8c /mm/vmscan.c | |
| parent | 1a4dc5bc7cb5659a8004d105afeb0571126f8f56 (diff) | |
| download | linux-8d07429319b2836604061f48f7e3dfe78acc060c.tar.gz linux-8d07429319b2836604061f48f7e3dfe78acc060c.tar.bz2 linux-8d07429319b2836604061f48f7e3dfe78acc060c.zip | |
mm: vmscan: remove remains of kswapd-managed zone->all_unreclaimable
shrink_zones() has a special branch to skip the all_unreclaimable()
check during hibernation, because a frozen kswapd can't mark a zone
unreclaimable.
But ever since commit 6e543d5780e3 ("mm: vmscan: fix
do_try_to_free_pages() livelock"), determining a zone to be
unreclaimable is done by directly looking at its scan history and no
longer relies on kswapd setting the per-zone flag.
Remove this branch and let shrink_zones() check the reclaimability of
the target zones regardless of hibernation state.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: KOSAKI Motohiro <Kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 0f16ffe8eb67..19b5b8016209 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2534,14 +2534,6 @@ out: if (sc->nr_reclaimed) return sc->nr_reclaimed; - /* - * As hibernation is going on, kswapd is freezed so that it can't mark - * the zone into all_unreclaimable. Thus bypassing all_unreclaimable - * check. - */ - if (oom_killer_disabled) - return 0; - /* Aborted reclaim to try compaction? don't OOM, then */ if (aborted_reclaim) return 1; |