From: Julia Lawall <Julia.Lawall@inria.fr>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kernel-janitors@vger.kernel.org,
Cornelia Huck <cohuck@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/4] vfio: vfio_pci_nvlink2: use mmgrab
Date: Sun, 29 Dec 2019 16:42:56 +0100 [thread overview]
Message-ID: <1577634178-22530-3-git-send-email-Julia.Lawall@inria.fr> (raw)
In-Reply-To: <1577634178-22530-1-git-send-email-Julia.Lawall@inria.fr>
Mmgrab was introduced in commit f1f1007644ff ("mm: add new mmgrab()
helper") and most of the kernel was updated to use it. Update a
remaining file.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
<smpl>
@@ expression e; @@
- atomic_inc(&e->mm_count);
+ mmgrab(e);
</smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
---
drivers/vfio/pci/vfio_pci_nvlink2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/pci/vfio_pci_nvlink2.c b/drivers/vfio/pci/vfio_pci_nvlink2.c
index f2983f0f84be..43df10af7f66 100644
--- a/drivers/vfio/pci/vfio_pci_nvlink2.c
+++ b/drivers/vfio/pci/vfio_pci_nvlink2.c
@@ -159,7 +159,7 @@ static int vfio_pci_nvgpu_mmap(struct vfio_pci_device *vdev,
data->useraddr = vma->vm_start;
data->mm = current->mm;
- atomic_inc(&data->mm->mm_count);
+ mmgrab(data->mm);
ret = (int) mm_iommu_newdev(data->mm, data->useraddr,
vma_pages(vma), data->gpu_hpa, &data->mem);
next prev parent reply other threads:[~2019-12-29 16:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-29 15:42 [PATCH 0/4] use mmgrab Julia Lawall
2019-12-29 15:42 ` Julia Lawall [this message]
2020-01-06 23:05 ` [PATCH 2/4] vfio: vfio_pci_nvlink2: " Alex Williamson
2020-01-07 5:51 ` Dan Carpenter
2020-01-07 17:00 ` Julia Lawall
2020-01-07 17:10 ` Alex Williamson
2020-01-07 9:14 ` Cornelia Huck
2019-12-29 15:42 ` [PATCH 3/4] vfio/spapr_tce: " Julia Lawall
2020-01-06 23:05 ` Alex Williamson
2020-01-07 9:14 ` Cornelia Huck
2020-01-03 12:31 ` [PATCH 0/4] " Dan Carpenter
2020-01-03 12:47 ` Julia Lawall
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