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mm/compaction: correct comment of cached migrate pfn update

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Commit e380bebe47 ("mm, compaction: keep migration source private to a
single compaction instance") moved update of async and sync
compact_cached_migrate_pfn from update_pageblock_skip to
update_cached_migrate but left the comment behind.  Move the relevant
comment to correct this.

Link: https://lkml.kernel.org/r/20230804110454.2935878-6-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kemeng Shi 2023-08-04 19:04:51 +08:00 • committed by Andrew Morton
parent 0aa8ea3c5d
commit cf043a007e
1 changed files with 1 additions and 1 deletions
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2
mm/compaction.c
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@ -469,6 +469,7 @@ static void update_cached_migrate(struct compact_control *cc, unsigned long pfn)
pfn = pageblock_end_pfn(pfn);
/* Update where async and sync compaction should restart */
if (pfn > zone->compact_cached_migrate_pfn[0])
zone->compact_cached_migrate_pfn[0] = pfn;
if (cc->mode != MIGRATE_ASYNC &&
@ -490,7 +491,6 @@ static void update_pageblock_skip(struct compact_control *cc,
set_pageblock_skip(page);
/* Update where async and sync compaction should restart */
if (pfn < zone->compact_cached_free_pfn)
zone->compact_cached_free_pfn = pfn;
}