linux-kernel - [PATCH -next] mm: Fix build for nommu systems

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Date:	Mon, 27 Jul 2015 07:40:17 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Oleg Nesterov <oleg@...hat.com>
Subject: [PATCH -next] mm: Fix build for nommu systems

Commit 31705a3a633b ("mm, mpx: add vm_flags_t vm_flags arg to
do_mmap_pgoff()") added vm_flags as parameter to do_mmap_pgoff().
The resulting code for nommu systems no longer compiles.

The fix matches the mmu code changes.

Fixes: 31705a3a633b ("mm, mpx: add vm_flags_t vm_flags arg to
	do_mmap_pgoff()")
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Oleg Nesterov <oleg@...hat.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 mm/nommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/nommu.c b/mm/nommu.c
index 530eea5af989..af2196e35013 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1245,7 +1245,7 @@ unsigned long do_mmap(struct file *file,
 	struct vm_area_struct *vma;
 	struct vm_region *region;
 	struct rb_node *rb;
-	unsigned long capabilities, vm_flags, result;
+	unsigned long capabilities, result;
 	int ret;
 
 	*populate = 0;
@@ -1263,7 +1263,7 @@ unsigned long do_mmap(struct file *file,
 
 	/* we've determined that we can make the mapping, now translate what we
 	 * now know into VMA flags */
-	vm_flags = determine_vm_flags(file, prot, flags, capabilities);
+	vm_flags |= determine_vm_flags(file, prot, flags, capabilities);
 
 	/* we're going to need to record the mapping */
 	region = kmem_cache_zalloc(vm_region_jar, GFP_KERNEL);
-- 
2.1.0

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