Displaying 6 results from an estimated 6 matches for "bmap_bytes".
2016 May 20
6
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...* The pages we've told the Host we're not using are enqueued
* at vb_dev_info->pages list.
@@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
wake_up(&vb->acked);
}
+static int balloon_page_bitmap_init(struct virtio_balloon *vb)
+{
+ unsigned long max_pfn, bmap_bytes;
+
+ max_pfn = get_max_pfn();
+ bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
+ if (!vb->page_bitmap)
+ vb->page_bitmap = kzalloc(bmap_bytes, GFP_KERNEL);
+ else {
+ if (bmap_bytes <= vb->bmap_len)
+ memset(vb->page_bitmap, 0, bmap_bytes);
+ else {
+ kfree(vb->...
2016 May 20
6
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...* The pages we've told the Host we're not using are enqueued
* at vb_dev_info->pages list.
@@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
wake_up(&vb->acked);
}
+static int balloon_page_bitmap_init(struct virtio_balloon *vb)
+{
+ unsigned long max_pfn, bmap_bytes;
+
+ max_pfn = get_max_pfn();
+ bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
+ if (!vb->page_bitmap)
+ vb->page_bitmap = kzalloc(bmap_bytes, GFP_KERNEL);
+ else {
+ if (bmap_bytes <= vb->bmap_len)
+ memset(vb->page_bitmap, 0, bmap_bytes);
+ else {
+ kfree(vb->...
2016 May 24
4
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...d
> > * at vb_dev_info->pages list.
> > @@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
> > wake_up(&vb->acked);
> > }
> >
> > +static int balloon_page_bitmap_init(struct virtio_balloon *vb) {
> > + unsigned long max_pfn, bmap_bytes;
> > +
> > + max_pfn = get_max_pfn();
>
> This is racy. max_pfn could be increased by memory hotplug after you got it.
>
>
> > + bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
> > + if (!vb->page_bitmap)
> > + vb->page_bitmap = kzallo...
2016 May 24
4
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...d
> > * at vb_dev_info->pages list.
> > @@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
> > wake_up(&vb->acked);
> > }
> >
> > +static int balloon_page_bitmap_init(struct virtio_balloon *vb) {
> > + unsigned long max_pfn, bmap_bytes;
> > +
> > + max_pfn = get_max_pfn();
>
> This is racy. max_pfn could be increased by memory hotplug after you got it.
>
>
> > + bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
> > + if (!vb->page_bitmap)
> > + vb->page_bitmap = kzallo...
2016 May 20
0
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...39;re not using are enqueued
> * at vb_dev_info->pages list.
> @@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
> wake_up(&vb->acked);
> }
>
> +static int balloon_page_bitmap_init(struct virtio_balloon *vb)
> +{
> + unsigned long max_pfn, bmap_bytes;
> +
> + max_pfn = get_max_pfn();
This is racy. max_pfn could be increased by memory hotplug
after you got it.
> + bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
> + if (!vb->page_bitmap)
> + vb->page_bitmap = kzalloc(bmap_bytes, GFP_KERNEL);
Likely to fail fo...
2016 May 24
0
[PATCH RFC kernel] balloon: speed up inflating/deflating process
...o->pages list.
> > > @@ -111,15 +116,66 @@ static void balloon_ack(struct virtqueue *vq)
> > > wake_up(&vb->acked);
> > > }
> > >
> > > +static int balloon_page_bitmap_init(struct virtio_balloon *vb) {
> > > + unsigned long max_pfn, bmap_bytes;
> > > +
> > > + max_pfn = get_max_pfn();
> >
> > This is racy. max_pfn could be increased by memory hotplug after you got it.
> >
> >
> > > + bmap_bytes = ALIGN(max_pfn, BITS_PER_LONG) / BITS_PER_BYTE;
> > > + if (!vb->page_bitmap)...