page_isolation: Fix a comment typo in test_pages_isolated()

pageblock_nr_page should be pageblock_nr_pages, and fist is
a typo of first.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 383bdbb98b04ca22726fe3d243db2ce789642975..0cee10ffb98d4cf8e6ad930faa1f4de925bdf3a5 100644 (file)
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -226,9 +226,9 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
        int ret;
 
        /*
-        * Note: pageblock_nr_page != MAX_ORDER. Then, chunks of free page
-        * is not aligned to pageblock_nr_pages.
-        * Then we just check pagetype fist.
+        * Note: pageblock_nr_pages != MAX_ORDER. Then, chunks of free pages
+        * are not aligned to pageblock_nr_pages.
+        * Then we just check migratetype first.
         */
        for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) {
                page = __first_valid_page(pfn, pageblock_nr_pages);
@@ -238,7 +238,7 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
        page = __first_valid_page(start_pfn, end_pfn - start_pfn);
        if ((pfn < end_pfn) || !page)
                return -EBUSY;
-       /* Check all pages are free or Marked as ISOLATED */
+       /* Check all pages are free or marked as ISOLATED */
        zone = page_zone(page);
        spin_lock_irqsave(&zone->lock, flags);
        ret = __test_page_isolated_in_pageblock(start_pfn, end_pfn,