void
mutex_enter(kmutex_t *mtx)
{
WANTLOCK(mtx, 0);
rumpuser_mutex_enter(RUMPMTX(mtx));
LOCKED(mtx, false);
}
void
rumpuser_bio(int fd, int op, void *data, size_t dlen, int64_t off,
rump_biodone_fn biodone, void *donearg)
{
static int bio_inited;
struct biocb *bio = memalloc(sizeof(*bio), 0);
struct blkfront_aiocb *aiocb = &bio->bio_aiocb;
int nlocks;
int num = fd - BLKFDOFF;
rumpkern_unsched(&nlocks, NULL);
if (!bio_inited) {
rumpuser_mutex_enter_nowrap(bio_mtx);
if (!bio_inited) {
bio_inited = 1;
rumpuser_mutex_exit(bio_mtx);
create_thread("biopoll", biothread, NULL);
} else {
rumpuser_mutex_exit(bio_mtx);
}
}
bio->bio_done = biodone;
bio->bio_arg = donearg;
bio->bio_num = num;
aiocb->aio_dev = blkdevs[num];
aiocb->aio_buf = data;
aiocb->aio_nbytes = dlen;
aiocb->aio_offset = off;
aiocb->aio_cb = biocomp;
aiocb->data = bio;
if (op & RUMPUSER_BIO_READ)
blkfront_aio_read(aiocb);
else
blkfront_aio_write(aiocb);
rumpuser_mutex_enter(bio_mtx);
bio_outstanding_total++;
blkdev_outstanding[num]++;
rumpuser_cv_signal(bio_cv);
rumpuser_mutex_exit(bio_mtx);
rumpkern_sched(nlocks, NULL);
}
void
mutex_enter(kmutex_t *mtx)
{
rumpuser_mutex_enter(mtx->kmtx_mtx);
}
void
rumpuser_mutex_enter_nowrap(struct rumpuser_mtx *mtx)
{
rumpuser_mutex_enter(mtx);
}
