diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/compaction.c | 7 | ||||
| -rw-r--r-- | mm/vmscan.c | 3 |
2 files changed, 8 insertions, 2 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 26521a12f22..b30c40f860c 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -261,6 +261,7 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone, unsigned long last_pageblock_nr = 0, pageblock_nr; unsigned long nr_scanned = 0, nr_isolated = 0; struct list_head *migratelist = &cc->migratepages; + isolate_mode_t mode = ISOLATE_ACTIVE|ISOLATE_INACTIVE; /* Do not scan outside zone boundaries */ low_pfn = max(cc->migrate_pfn, zone->zone_start_pfn); @@ -370,9 +371,11 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone, continue; } + if (!cc->sync) + mode |= ISOLATE_CLEAN; + /* Try isolate the page */ - if (__isolate_lru_page(page, - ISOLATE_ACTIVE|ISOLATE_INACTIVE, 0) != 0) + if (__isolate_lru_page(page, mode, 0) != 0) continue; VM_BUG_ON(PageTransCompound(page)); diff --git a/mm/vmscan.c b/mm/vmscan.c index 9267ba1b664..68357354db1 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1045,6 +1045,9 @@ int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file) ret = -EBUSY; + if ((mode & ISOLATE_CLEAN) && (PageDirty(page) || PageWriteback(page))) + return ret; + if (likely(get_page_unless_zero(page))) { /* * Be careful not to clear PageLRU until after we're |