On 2020/9/24 下午3:48, Eli Cohen wrote:
On Thu, Sep 24, 2020 at 11:21:03AM +0800, Jason Wang wrote:
We need to free vqs during the err path after it has been allocated
since vhost won't do that for us.
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
drivers/vhost/vdpa.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 796fe979f997..9c641274b9f3 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -764,6 +764,12 @@ static void vhost_vdpa_free_domain(struct vhost_vdpa *v)
v->domain = NULL;
}
+static void vhost_vdpa_cleanup(struct vhost_vdpa *v)
+{
+ vhost_dev_cleanup(&v->vdev);
+ kfree(v->vdev.vqs);
+}
+
Wouldn't it be cleaner to call kfree(vqs) explicilty inside
vhost_vdpa_open() in case of failure and keep the symetry of
vhost_dev_init()/vhost_dev_cleanup()?
That's also fine.
See
https://www.mail-archive.com/virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx/msg42558.html
I will use that for the next version.
Thanks.
static int vhost_vdpa_open(struct inode *inode, struct file *filep)
{
struct vhost_vdpa *v;
@@ -809,7 +815,7 @@ static int vhost_vdpa_open(struct inode *inode, struct file *filep)
return 0;
err_init_iotlb:
- vhost_dev_cleanup(&v->vdev);
+ vhost_vdpa_cleanup(v);
err:
atomic_dec(&v->opened);
return r;
@@ -840,8 +846,7 @@ static int vhost_vdpa_release(struct inode *inode, struct file *filep)
vhost_vdpa_free_domain(v);
vhost_vdpa_config_put(v);
vhost_vdpa_clean_irq(v);
- vhost_dev_cleanup(&v->vdev);
- kfree(v->vdev.vqs);
+ vhost_vdpa_cleanup(v);
mutex_unlock(&d->mutex);
atomic_dec(&v->opened);
--
2.20.1
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