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| author | Stefan Hajnoczi | 2014-07-09 10:05:49 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2014-07-14 12:03:20 +0200 |
| commit | f897bf751fbd95e4015b95d202c706548586813a (patch) | |
| tree | 38023ac92b901f2cd4c7aa45b34549a08cfba9ca /include | |
| parent | virtio-blk: avoid g_slice_new0() for VirtIOBlockReq and VirtQueueElement (diff) | |
| download | qemu-f897bf751fbd95e4015b95d202c706548586813a.tar.gz qemu-f897bf751fbd95e4015b95d202c706548586813a.tar.xz qemu-f897bf751fbd95e4015b95d202c706548586813a.zip | |
virtio-blk: embed VirtQueueElement in VirtIOBlockReq
The memory allocation between hw/block/virtio-blk.c,
hw/block/dataplane/virtio-blk.c, and hw/virtio/dataplane/vring.c is
messy. Structs are allocated in different files than they are freed in.
This is risky and makes memory leaks easier.
Embed VirtQueueElement in VirtIOBlockReq to reduce the amount of memory
allocation we need to juggle. This also makes vring.c and virtio.c
slightly more similar.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/virtio/dataplane/vring.h | 2 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-blk.h | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h index b23edd276b..af73ee2ae3 100644 --- a/include/hw/virtio/dataplane/vring.h +++ b/include/hw/virtio/dataplane/vring.h @@ -53,7 +53,7 @@ void vring_teardown(Vring *vring, VirtIODevice *vdev, int n); void vring_disable_notification(VirtIODevice *vdev, Vring *vring); bool vring_enable_notification(VirtIODevice *vdev, Vring *vring); bool vring_should_notify(VirtIODevice *vdev, Vring *vring); -int vring_pop(VirtIODevice *vdev, Vring *vring, VirtQueueElement **elem); +int vring_pop(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem); void vring_push(Vring *vring, VirtQueueElement *elem, int len); #endif /* VRING_H */ diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h index b3080a2144..afb7b8db3a 100644 --- a/include/hw/virtio/virtio-blk.h +++ b/include/hw/virtio/virtio-blk.h @@ -144,7 +144,7 @@ typedef struct MultiReqBuffer { typedef struct VirtIOBlockReq { VirtIOBlock *dev; - VirtQueueElement *elem; + VirtQueueElement elem; struct virtio_blk_inhdr *in; struct virtio_blk_outhdr out; QEMUIOVector qiov; @@ -152,6 +152,10 @@ typedef struct VirtIOBlockReq { BlockAcctCookie acct; } VirtIOBlockReq; +VirtIOBlockReq *virtio_blk_alloc_request(VirtIOBlock *s); + +void virtio_blk_free_request(VirtIOBlockReq *req); + int virtio_blk_handle_scsi_req(VirtIOBlock *blk, VirtQueueElement *elem); |