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-rw-r--r--mm/compaction.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index fa9b2b598eab..bfc93da1c2c7 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -306,16 +306,14 @@ __reset_isolation_pfn(struct zone *zone, unsigned long pfn, bool check_source,
* is necessary for the block to be a migration source/target.
*/
do {
- if (pfn_valid_within(pfn)) {
- if (check_source && PageLRU(page)) {
- clear_pageblock_skip(page);
- return true;
- }
+ if (check_source && PageLRU(page)) {
+ clear_pageblock_skip(page);
+ return true;
+ }
- if (check_target && PageBuddy(page)) {
- clear_pageblock_skip(page);
- return true;
- }
+ if (check_target && PageBuddy(page)) {
+ clear_pageblock_skip(page);
+ return true;
}
page += (1 << PAGE_ALLOC_COSTLY_ORDER);
@@ -585,8 +583,6 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
break;
nr_scanned++;
- if (!pfn_valid_within(blockpfn))
- goto isolate_fail;
/*
* For compound pages such as THP and hugetlbfs, we can save
@@ -885,8 +881,6 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
cond_resched();
}
- if (!pfn_valid_within(low_pfn))
- goto isolate_fail;
nr_scanned++;
page = pfn_to_page(low_pfn);