[PATCH 12/18] mm, hugetlb: remove a check for return value of alloc_huge_page()

[Joonsoo Kim]

Now, alloc_huge_page() only return -ENOSPEC if failed.
So, we don't worry about other return value.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 94173e0..35ccdad 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2562,7 +2562,6 @@ retry_avoidcopy:
 	new_page = alloc_huge_page(vma, address, use_reserve);
 
 	if (IS_ERR(new_page)) {
-		long err = PTR_ERR(new_page);
 		page_cache_release(old_page);
 
 		/*
@@ -2591,10 +2590,7 @@ retry_avoidcopy:
 
 		/* Caller expects lock to be held */
 		spin_lock(&mm->page_table_lock);
-		if (err == -ENOMEM)
-			return VM_FAULT_OOM;
-		else
-			return VM_FAULT_SIGBUS;
+		return VM_FAULT_SIGBUS;
 	}
 
 	/*
@@ -2720,11 +2716,7 @@ retry:
 
 		page = alloc_huge_page(vma, address, use_reserve);
 		if (IS_ERR(page)) {
-			ret = PTR_ERR(page);
-			if (ret == -ENOMEM)
-				ret = VM_FAULT_OOM;
-			else
-				ret = VM_FAULT_SIGBUS;
+			ret = VM_FAULT_SIGBUS;
 			goto out;
 		}
 		clear_huge_page(page, address, pages_per_huge_page(h));
-- 
1.7.9.5

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