[PATCH] hugetlb: fix error return for brk() entering a hugepage region

Commit cb07c9a1864a8eac9f3123e428100d5b2a16e65a causes the wrong return
value. is_hugepage_only_range() is a boolean, so we should return
-EINVAL rather than 1.

Also - we can use "mm" instead of looking up "current->mm" again.

Signed-off-by: Hugh Dickins <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

mm/mmap.c

···
 	if ((addr + len) > TASK_SIZE || (addr + len) < addr)
 		return -EINVAL;
 
-	error = is_hugepage_only_range(current->mm, addr, len);
-	if (error)
-		return error;
+	if (is_hugepage_only_range(mm, addr, len))
+		return -EINVAL;
 
 	flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;