diff options
Diffstat (limited to 'module/zfs')
| -rw-r--r-- | module/zfs/vdev_queue.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/module/zfs/vdev_queue.c b/module/zfs/vdev_queue.c index 4f29d0043..75a123ece 100644 --- a/module/zfs/vdev_queue.c +++ b/module/zfs/vdev_queue.c @@ -829,6 +829,15 @@ vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority) vdev_queue_t *vq = &zio->io_vd->vdev_queue; avl_tree_t *tree; + /* + * ZIO_PRIORITY_NOW is used by the vdev cache code and the aggregate zio + * code to issue IOs without adding them to the vdev queue. In this + * case, the zio is already going to be issued as quickly as possible + * and so it doesn't need any reprioitization to help. + */ + if (zio->io_priority == ZIO_PRIORITY_NOW) + return; + ASSERT3U(zio->io_priority, <, ZIO_PRIORITY_NUM_QUEUEABLE); ASSERT3U(priority, <, ZIO_PRIORITY_NUM_QUEUEABLE); |