Displaying 3 results from an estimated 3 matches for "deflate_pfns".
2017 Oct 22
0
[PATCH v1 1/3] virtio-balloon: replace the coarse-grained balloon_lock
...t_of_memory() is
> serialized by oom_lock, I suggest using static (maybe kmalloc()ed as
> vb->oom_pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX]) buffer when called from
> out_of_memory().
In that case, we might as well to use
vb->inflate_pfns = kmalloc(VIRTIO_BALLOON_ARRAY_PFNS_MAX..);
vb->deflate_pfns = kmalloc(VIRTIO_BALLOON_ARRAY_PFNS_MAX..);
which are allocated in probe().
>>
>> /* We can only do one array worth at a time. */
>> - num = min(num, ARRAY_SIZE(vb->pfns));
>> + num = min_t(size_t, num, VIRTIO_BALLOON_ARRAY_PFNS_MAX);
>>
>> - mutex_l...
2017 Oct 22
2
[PATCH v1 1/3] virtio-balloon: replace the coarse-grained balloon_lock
Wei Wang wrote:
> The balloon_lock was used to synchronize the access demand to elements
> of struct virtio_balloon and its queue operations (please see commit
> e22504296d). This prevents the concurrent run of the leak_balloon and
> fill_balloon functions, thereby resulting in a deadlock issue on OOM:
>
> fill_balloon: take balloon_lock and wait for OOM to get some memory;
>
2017 Oct 22
2
[PATCH v1 1/3] virtio-balloon: replace the coarse-grained balloon_lock
Wei Wang wrote:
> The balloon_lock was used to synchronize the access demand to elements
> of struct virtio_balloon and its queue operations (please see commit
> e22504296d). This prevents the concurrent run of the leak_balloon and
> fill_balloon functions, thereby resulting in a deadlock issue on OOM:
>
> fill_balloon: take balloon_lock and wait for OOM to get some memory;
>