The patch titled
Subject: mm-compaction-add-the-ultimate-direct-compaction-priority-fix
has been added to the -mm tree. Its filename is
mm-compaction-add-the-ultimate-direct-compaction-priority-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-add-the-ultimate-direct-compaction-priority-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-add-the-ultimate-direct-compaction-priority-fix.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm-compaction-add-the-ultimate-direct-compaction-priority-fix
Use the MIN_COMPACT_PRIORITY alias instead of COMPACT_PRIO_SYNC_FULL to
disable heuristics "because this would be easier to follow and it would be
easier for future changes", per Michal.
Link: http://lkml.kernel.org/r/d443b884-87e7-1c93-8684-3a3a35759fb1@xxxxxxx
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Suggested-by: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/compaction.c~mm-compaction-add-the-ultimate-direct-compaction-priority-fix mm/compaction.c
--- a/mm/compaction.c~mm-compaction-add-the-ultimate-direct-compaction-priority-fix
+++ a/mm/compaction.c
@@ -1644,8 +1644,8 @@ static enum compact_result compact_zone_
.alloc_flags = alloc_flags,
.classzone_idx = classzone_idx,
.direct_compaction = true,
- .whole_zone = (prio == COMPACT_PRIO_SYNC_FULL),
- .ignore_skip_hint = (prio == COMPACT_PRIO_SYNC_FULL)
+ .whole_zone = (prio == MIN_COMPACT_PRIORITY),
+ .ignore_skip_hint = (prio == MIN_COMPACT_PRIORITY)
};
INIT_LIST_HEAD(&cc.freepages);
INIT_LIST_HEAD(&cc.migratepages);
@@ -1691,7 +1691,7 @@ enum compact_result try_to_compact_pages
ac->nodemask) {
enum compact_result status;
- if (prio > COMPACT_PRIO_SYNC_FULL
+ if (prio > MIN_COMPACT_PRIORITY
&& compaction_deferred(zone, order)) {
rc = max_t(enum compact_result, COMPACT_DEFERRED, rc);
continue;
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
mm-compaction-make-whole_zone-flag-ignore-cached-scanner-positions.patch
mm-compaction-cleanup-unused-functions.patch
mm-compaction-rename-compact_partial-to-compact_success.patch
mm-compaction-dont-recheck-watermarks-after-compact_success.patch
mm-compaction-add-the-ultimate-direct-compaction-priority.patch
mm-compaction-add-the-ultimate-direct-compaction-priority-fix.patch
mm-compaction-more-reliably-increase-direct-compaction-priority.patch
mm-compaction-use-correct-watermark-when-checking-compaction-success.patch
mm-compaction-create-compact_gap-wrapper.patch
mm-compaction-create-compact_gap-wrapper-fix.patch
mm-compaction-use-proper-alloc_flags-in-__compaction_suitable.patch
mm-compaction-require-only-min-watermarks-for-non-costly-orders.patch
mm-compaction-require-only-min-watermarks-for-non-costly-orders-fix.patch
mm-vmscan-make-compaction_ready-more-accurate-and-readable.patch
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