diff options
Diffstat (limited to 'sys/geom/geom_io.c')
| -rw-r--r-- | sys/geom/geom_io.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/sys/geom/geom_io.c b/sys/geom/geom_io.c index 446702a..28c3b32 100644 --- a/sys/geom/geom_io.c +++ b/sys/geom/geom_io.c @@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$"); static struct g_bioq g_bio_run_down; static struct g_bioq g_bio_run_up; +static struct g_bioq g_bio_run_task; static u_int pace; static uma_zone_t biozone; @@ -151,6 +152,7 @@ g_io_init() g_bioq_init(&g_bio_run_down); g_bioq_init(&g_bio_run_up); + g_bioq_init(&g_bio_run_task); biozone = uma_zcreate("g_bio", sizeof (struct bio), NULL, NULL, NULL, NULL, @@ -359,6 +361,23 @@ g_io_schedule_down(struct thread *tp __unused) } void +bio_taskqueue(struct bio *bp, bio_task_t *func, void *arg) +{ + bp->bio_task = func; + bp->bio_task_arg = arg; + /* + * The taskqueue is actually just a second queue off the "up" + * queue, so we use the same lock. + */ + g_bioq_lock(&g_bio_run_up); + TAILQ_INSERT_TAIL(&g_bio_run_task.bio_queue, bp, bio_queue); + g_bio_run_task.bio_queue_length++; + wakeup(&g_wait_up); + g_bioq_unlock(&g_bio_run_up); +} + + +void g_io_schedule_up(struct thread *tp __unused) { struct bio *bp; @@ -368,6 +387,14 @@ g_io_schedule_up(struct thread *tp __unused) mtx_init(&mymutex, "g_xup", NULL, MTX_DEF); for(;;) { g_bioq_lock(&g_bio_run_up); + bp = g_bioq_first(&g_bio_run_task); + if (bp != NULL) { + g_bioq_unlock(&g_bio_run_up); + mtx_lock(&mymutex); + bp->bio_task(bp->bio_task_arg); + mtx_unlock(&mymutex); + continue; + } bp = g_bioq_first(&g_bio_run_up); if (bp != NULL) { g_bioq_unlock(&g_bio_run_up); |
