linux-kernel - linux-next: build failure after merge of the mm tree

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Date:   Fri, 27 Jan 2023 17:16:18 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Dave Airlie <airlied@...hat.com>
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        DRI <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree

Hi all,

After merging the mm tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

drivers/accel/ivpu/ivpu_gem.c: In function 'ivpu_bo_mmap':
drivers/accel/ivpu/ivpu_gem.c:449:23: error: assignment of read-only member 'vm_flags'
  449 |         vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND;
      |                       ^~

Caused by commit

  b95a895848b9 ("mm: introduce vma->vm_flags wrapper functions")

interacting with commit

  647371a6609d ("accel/ivpu: Add GEM buffer object management")

from the drm tree.

I have applied the following merge fix patch for today.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 27 Jan 2023 17:12:37 +1100
Subject: [PATCH] accel/ivpu: fix up for "mm: introduce vma->vm_flags wrapper functions"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/accel/ivpu/ivpu_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/accel/ivpu/ivpu_gem.c b/drivers/accel/ivpu/ivpu_gem.c
index d1f923971b4c..12b219dd4f36 100644
--- a/drivers/accel/ivpu/ivpu_gem.c
+++ b/drivers/accel/ivpu/ivpu_gem.c
@@ -446,7 +446,7 @@ static int ivpu_bo_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 		return dma_buf_mmap(obj->dma_buf, vma, 0);
 	}
 
-	vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND;
+	vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND);
 	vma->vm_page_prot = ivpu_bo_pgprot(bo, vm_get_page_prot(vma->vm_flags));
 
 	return 0;
-- 
2.35.1

-- 
Cheers,
Stephen Rothwell

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