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mm/compaction: respect ignore_skip_hint in update_pageblock_skip

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update_pageblock_skip() only fits to compaction which tries to isolate
by pageblock unit.  If isolate_migratepages_range() is called by CMA, it
try to isolate regardless of pageblock unit and it don't reference
get_pageblock_skip() by ignore_skip_hint.  We should also respect it on
update_pageblock_skip() to prevent from setting the wrong information.

Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Reviewed-by: Naoya Horiguchi <[email protected]>
Reviewed-by: Wanpeng Li <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Rafael Aquini <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Wanpeng Li <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Zhang Yanfei <[email protected]>
Cc: <[email protected]>	[3.7+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2013-12-18 17:08:52 -08:00 • committed by Linus Torvalds
commit 6815bf3f23
1 changed files with 4 additions and 0 deletions
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4
mm/compaction.c
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@ -134,6 +134,10 @@ static void update_pageblock_skip(struct compact_control *cc,
bool migrate_scanner)
{
struct zone *zone = cc->zone;
if (cc->ignore_skip_hint)
return;
if (!page)
return;