linux-kernel - [PATCH] mm, hugetlbfs: include mm.h for vm_operations

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Date:   Mon, 11 Dec 2017 17:21:27 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Arnd Bergmann <arnd@...db.de>, Michal Hocko <mhocko@...e.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm, hugetlbfs: include mm.h for vm_operations_struct

The infiniband umem code causes a build failure in some configurations:

In file included from drivers/infiniband/core/umem_odp.c:41:0:
include/linux/hugetlb.h: In function 'vma_kernel_pagesize':
include/linux/hugetlb.h:262:32: error: dereferencing pointer to incomplete type 'const struct vm_operations_struct'

Including the header file that defines the structure is sufficient to
avoid this.

Fixes: ac9284a6b670 ("mm, hugetlbfs: introduce ->pagesize() to vm_operations_struct")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/hugetlb.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index b0f1f6768336..082ff47201be 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -9,6 +9,7 @@
 #include <linux/cgroup.h>
 #include <linux/list.h>
 #include <linux/kref.h>
+#include <linux/mm.h>
 #include <asm/pgtable.h>
 
 struct ctl_table;
-- 
2.9.0