Commit 047d72c3 authored by Johannes Weiner's avatar Johannes Weiner Committed by Linus Torvalds

mm: remove seemingly spurious reclaimability check from laptop_mode gating

Commit 1d82de61 ("mm, vmscan: make kswapd reclaim in terms of
nodes") allowed laptop_mode=1 to start writing not just when the
priority drops to DEF_PRIORITY - 2 but also when the node is
unreclaimable.

That appears to be a spurious change in this patch as I doubt the series
was tested with laptop_mode, and neither is that particular change
mentioned in the changelog.  Remove it, it's still recent.

Link: http://lkml.kernel.org/r/20170228214007.5621-4-hannes@cmpxchg.orgSigned-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Acked-by: default avatarHillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: default avatarMel Gorman <mgorman@techsingularity.net>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d450abd8
...@@ -3285,7 +3285,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx) ...@@ -3285,7 +3285,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx)
* If we're getting trouble reclaiming, start doing writepage * If we're getting trouble reclaiming, start doing writepage
* even in laptop mode. * even in laptop mode.
*/ */
if (sc.priority < DEF_PRIORITY - 2 || !pgdat_reclaimable(pgdat)) if (sc.priority < DEF_PRIORITY - 2)
sc.may_writepage = 1; sc.may_writepage = 1;
/* Call soft limit reclaim before calling shrink_node. */ /* Call soft limit reclaim before calling shrink_node. */
......
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