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| author | Michael S. Tsirkin <mst@redhat.com> | 2010-04-29 17:26:37 +0300 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-05-19 22:15:46 +0930 |
| commit | bbd603efb4238cf78083c00f0a81adfa8994aa33 (patch) | |
| tree | 3980961f9dbf08e748b3c2de56caf43dec21aa76 /drivers/virtio | |
| parent | dc3f5e68f846eec38fb31d78f0b6e83633ad375e (diff) | |
| download | lwn-bbd603efb4238cf78083c00f0a81adfa8994aa33.tar.gz lwn-bbd603efb4238cf78083c00f0a81adfa8994aa33.zip | |
virtio: add_buf_gfp
Add an add_buf variant that gets gfp parameter. Use that
to allocate indirect buffers.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 0717b5b000bb..1ca88908723b 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -110,13 +110,14 @@ struct vring_virtqueue static int vring_add_indirect(struct vring_virtqueue *vq, struct scatterlist sg[], unsigned int out, - unsigned int in) + unsigned int in, + gfp_t gfp) { struct vring_desc *desc; unsigned head; int i; - desc = kmalloc((out + in) * sizeof(struct vring_desc), GFP_ATOMIC); + desc = kmalloc((out + in) * sizeof(struct vring_desc), gfp); if (!desc) return vq->vring.num; @@ -155,11 +156,12 @@ static int vring_add_indirect(struct vring_virtqueue *vq, return head; } -int virtqueue_add_buf(struct virtqueue *_vq, - struct scatterlist sg[], - unsigned int out, - unsigned int in, - void *data) +int virtqueue_add_buf_gfp(struct virtqueue *_vq, + struct scatterlist sg[], + unsigned int out, + unsigned int in, + void *data, + gfp_t gfp) { struct vring_virtqueue *vq = to_vvq(_vq); unsigned int i, avail, head, uninitialized_var(prev); @@ -171,7 +173,7 @@ int virtqueue_add_buf(struct virtqueue *_vq, /* If the host supports indirect descriptor tables, and we have multiple * buffers, then go indirect. FIXME: tune this threshold */ if (vq->indirect && (out + in) > 1 && vq->num_free) { - head = vring_add_indirect(vq, sg, out, in); + head = vring_add_indirect(vq, sg, out, in, gfp); if (head != vq->vring.num) goto add_head; } @@ -232,7 +234,7 @@ add_head: return vq->num_free ? vq->vring.num : 0; return vq->num_free; } -EXPORT_SYMBOL_GPL(virtqueue_add_buf); +EXPORT_SYMBOL_GPL(virtqueue_add_buf_gfp); void virtqueue_kick(struct virtqueue *_vq) { |