diff options
| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-09-23 22:26:31 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-09-23 22:26:31 +0930 |
| commit | 3c1b27d5043086a485f8526353ae9fe37bfa1065 (patch) | |
| tree | e3b6eda3c66bcd1fc3af6e7fa6e4e3af77459474 /drivers/block/virtio_blk.c | |
| parent | f68d24082e22ccee3077d11aeb6dc5354f0ca7f1 (diff) | |
| download | lwn-3c1b27d5043086a485f8526353ae9fe37bfa1065.tar.gz lwn-3c1b27d5043086a485f8526353ae9fe37bfa1065.zip | |
virtio: make add_buf return capacity remaining
This API change means that virtio_net can tell how much capacity
remains for buffers. It's necessarily fuzzy, since
VIRTIO_RING_F_INDIRECT_DESC means we can fit any number of descriptors
in one, *if* we can kmalloc.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dinesh Subhraveti <dineshs@us.ibm.com>
Diffstat (limited to 'drivers/block/virtio_blk.c')
| -rw-r--r-- | drivers/block/virtio_blk.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index aa1a3d5a3e2b..d739ee4201f9 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -139,7 +139,7 @@ static bool do_req(struct request_queue *q, struct virtio_blk *vblk, } } - if (vblk->vq->vq_ops->add_buf(vblk->vq, vblk->sg, out, in, vbr)) { + if (vblk->vq->vq_ops->add_buf(vblk->vq, vblk->sg, out, in, vbr) < 0) { mempool_free(vbr, vblk->pool); return false; } |