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-rw-r--r--mm/page_alloc.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3d974cb..635d7dd 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1910,7 +1910,9 @@ static int move_freepages(struct zone *zone,
* Remove at a later date when no bug reports exist related to
* grouping pages by mobility
*/
- VM_BUG_ON(page_zone(start_page) != page_zone(end_page));
+ VM_BUG_ON(pfn_valid(page_to_pfn(start_page)) &&
+ pfn_valid(page_to_pfn(end_page)) &&
+ page_zone(start_page) != page_zone(end_page));
#endif
if (num_movable)
@@ -5359,14 +5361,9 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
/*
* Skip to the pfn preceding the next valid one (or
* end_pfn), such that we hit a valid pfn (or end_pfn)
- * on our next iteration of the loop. Note that it needs
- * to be pageblock aligned even when the region itself
- * is not. move_freepages_block() can shift ahead of
- * the valid region but still depends on correct page
- * metadata.
+ * on our next iteration of the loop.
*/
- pfn = (memblock_next_valid_pfn(pfn, end_pfn) &
- ~(pageblock_nr_pages-1)) - 1;
+ pfn = memblock_next_valid_pfn(pfn, end_pfn) - 1;
#endif
continue;
}
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