summaryrefslogtreecommitdiff
path: root/mm/compaction.c
diff options
context:
space:
mode:
authorMiaohe Lin <linmiaohe@huawei.com>2022-04-29 09:16:17 +0300
committerakpm <akpm@linux-foundation.org>2022-04-29 09:16:17 +0300
commit85f73e6d752de325d7570293e909140bc3280d37 (patch)
tree59b37e45409486c9d3a1d2e1402f4fe01506f496 /mm/compaction.c
parentd56c15845a5493dbe9e8b77f63418bea117d1221 (diff)
downloadlinux-85f73e6d752de325d7570293e909140bc3280d37.tar.xz
mm: compaction: clean up comment about suitable migration target recheck
checked_pageblock is already removed and suitable_migration_target is not rechecked under the zone lock since commit f8224aa5a0a4 ("mm, compaction: do not recheck suitable_migration_target under lock"). Correct the comment accordingly. Link: https://lkml.kernel.org/r/20220418141253.24298-6-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Charan Teja Kalla <charante@codeaurora.org> Cc: David Hildenbrand <david@redhat.com> Cc: Pintu Kumar <pintu@codeaurora.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/compaction.c')
-rw-r--r--mm/compaction.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index e839b26fb3d8..97821b7d7a4f 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -599,13 +599,7 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
if (!PageBuddy(page))
goto isolate_fail;
- /*
- * If we already hold the lock, we can skip some rechecking.
- * Note that if we hold the lock now, checked_pageblock was
- * already set in some previous iteration (or strict is true),
- * so it is correct to skip the suitable migration target
- * recheck as well.
- */
+ /* If we already hold the lock, we can skip some rechecking. */
if (!locked) {
locked = compact_lock_irqsave(&cc->zone->lock,
&flags, cc);