From: David Rientjes <[email protected]> 3.12-stable review patch. If anyone has any objections, please let me know.
=============== commit 91ca9186484809c57303b33778d841cc28f696ed upstream. The cached pageblock hint should be ignored when triggering compaction through /proc/sys/vm/compact_memory so all eligible memory is isolated. Manually invoking compaction is known to be expensive, there's no need to skip pageblocks based on heuristics (mainly for debugging). Signed-off-by: David Rientjes <[email protected]> Acked-by: Mel Gorman <[email protected]> Cc: Rik van Riel <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Mel Gorman <[email protected]> Signed-off-by: Jiri Slaby <[email protected]> --- mm/compaction.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/compaction.c b/mm/compaction.c index 45308186a2fa..5c17302275b7 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1191,6 +1191,7 @@ static void compact_node(int nid) struct compact_control cc = { .order = -1, .sync = true, + .ignore_skip_hint = true, }; __compact_pgdat(NODE_DATA(nid), &cc); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
