From: Bob Liu <lliubbo@gmail.com>
Date: Tue, 23 Oct 2012 06:45:57 +0000 (+0800)
Subject: mm: cma: alloc_contig_range: return early for err path
X-Git-Tag: firefly_0821_release~3680^2~1729^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a1f102136538553a9488c713a336065ebb567542;p=firefly-linux-kernel-4.4.55.git

mm: cma: alloc_contig_range: return early for err path

If start_isolate_page_range() failed, unset_migratetype_isolate() has been
done inside it.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bb90971182bd..b0012ab372a4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5825,7 +5825,7 @@ int alloc_contig_range(unsigned long start, unsigned long end,
 	ret = start_isolate_page_range(pfn_max_align_down(start),
 				       pfn_max_align_up(end), migratetype);
 	if (ret)
-		goto done;
+		return ret;
 
 	ret = __alloc_contig_migrate_range(&cc, start, end);
 	if (ret)