static BlockDriverAIOCB *qemu_gluster_aio_discard(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, BlockDriverCompletionFunc *cb,
void *opaque)
{
int ret;
GlusterAIOCB *acb;
BDRVGlusterState *s = bs->opaque;
size_t size;
off_t offset;
offset = sector_num * BDRV_SECTOR_SIZE;
size = nb_sectors * BDRV_SECTOR_SIZE;
acb = qemu_aio_get(&gluster_aiocb_info, bs, cb, opaque);
acb->size = 0;
acb->ret = 0;
acb->finished = NULL;
ret = glfs_discard_async(s->fd, offset, size, &gluster_finish_aiocb, acb);
if (ret < 0) {
goto out;
}
return &acb->common;
out:
qemu_aio_release(acb);
return NULL;
}
static coroutine_fn int qemu_gluster_co_discard(BlockDriverState *bs,
int64_t sector_num, int nb_sectors)
{
int ret;
GlusterAIOCB *acb = g_slice_new(GlusterAIOCB);
BDRVGlusterState *s = bs->opaque;
size_t size = nb_sectors * BDRV_SECTOR_SIZE;
off_t offset = sector_num * BDRV_SECTOR_SIZE;
acb->size = 0;
acb->ret = 0;
acb->coroutine = qemu_coroutine_self();
ret = glfs_discard_async(s->fd, offset, size, &gluster_finish_aiocb, acb);
if (ret < 0) {
ret = -errno;
goto out;
}
qemu_coroutine_yield();
ret = acb->ret;
out:
g_slice_free(GlusterAIOCB, acb);
return ret;
}
