The patch titled
Subject: mm-compaction-introduce-kcompactd-fix-3
has been added to the -mm tree. Its filename is
mm-compaction-introduce-kcompactd-fix-3.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-introduce-kcompactd-fix-3.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-introduce-kcompactd-fix-3.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm-compaction-introduce-kcompactd-fix-3
Remove extraneous check for sync compaction before deferring.
Correctly adjust kcompactd's classzone_idx instead of kswapd's.
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Reported-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff -puN mm/compaction.c~mm-compaction-introduce-kcompactd-fix-3 mm/compaction.c
--- a/mm/compaction.c~mm-compaction-introduce-kcompactd-fix-3
+++ a/mm/compaction.c
@@ -1811,8 +1811,11 @@ static void kcompactd_do_work(pg_data_t
cc.classzone_idx, 0)) {
success = true;
compaction_defer_reset(zone, cc.order, false);
- } else if (cc.mode != MIGRATE_ASYNC &&
- status == COMPACT_COMPLETE) {
+ } else if (status == COMPACT_COMPLETE) {
+ /*
+ * We use sync migration mode here, so we defer like
+ * sync direct compaction does.
+ */
defer_compaction(zone, cc.order);
}
@@ -1827,8 +1830,8 @@ static void kcompactd_do_work(pg_data_t
*/
if (pgdat->kcompactd_max_order <= cc.order)
pgdat->kcompactd_max_order = 0;
- if (pgdat->classzone_idx >= cc.classzone_idx)
- pgdat->classzone_idx = pgdat->nr_zones - 1;
+ if (pgdat->kcompactd_classzone_idx >= cc.classzone_idx)
+ pgdat->kcompactd_classzone_idx = pgdat->nr_zones - 1;
}
void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx)
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
tracepoints-move-trace_print_flags-definitions-to-tracepoint-defsh.patch
mm-tracing-make-show_gfp_flags-up-to-date.patch
tools-perf-make-gfp_compact_table-up-to-date.patch
mm-tracing-unify-mm-flags-handling-in-tracepoints-and-printk.patch
mm-printk-introduce-new-format-string-for-flags.patch
mm-printk-introduce-new-format-string-for-flags-fix.patch
mm-debug-replace-dump_flags-with-the-new-printk-formats.patch
mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
mm-oom-print-symbolic-gfp_flags-in-oom-warning.patch
mm-page_owner-print-migratetype-of-page-and-pageblock-symbolic-flags.patch
mm-page_owner-convert-page_owner_inited-to-static-key.patch
mm-page_owner-copy-page-owner-info-during-migration.patch
mm-page_owner-track-and-print-last-migrate-reason.patch
mm-page_owner-dump-page-owner-info-from-dump_page.patch
mm-debug-move-bad-flags-printing-to-bad_page.patch
mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory.patch
mm-kswapd-remove-bogus-check-of-balance_classzone_idx.patch
mm-compaction-introduce-kcompactd.patch
mm-compaction-introduce-kcompactd-fix-3.patch
mm-memory-hotplug-small-cleanup-in-online_pages.patch
mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd.patch
mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd-fix.patch
mm-compaction-adapt-isolation_suitable-flushing-to-kcompactd.patch
mm-tracing-refresh-__def_vmaflag_names-fix.patch
mm-use-radix_tree_iter_retry-fix.patch
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