Author: mav
Date: Fri Oct 12 15:14:22 2018
New Revision: 339329
URL: https://svnweb.freebsd.org/changeset/base/339329

Log:
  Add ZIO_TYPE_FREE support for indirect vdevs.
  
  Upstream code expects only ZIO_TYPE_READ and some ZIO_TYPE_WRITE
  requests to removed (indirect) vdevs, while on FreeBSD there is also
  ZIO_TYPE_FREE (TRIM).  ZIO_TYPE_FREE requests do not have the data
  buffers, so don't need the pointer adjustment.
  
  PR:           228750, 229007
  Reviewed by:  allanjude, sef
  Approved by:  re (kib)
  MFC after:    1 week
  Differential Revision:        https://reviews.freebsd.org/D17523

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c Fri Oct 
12 13:01:17 2018        (r339328)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c Fri Oct 
12 15:14:22 2018        (r339329)
@@ -1147,6 +1147,9 @@ vdev_indirect_child_io_done(zio_t *zio)
        pio->io_error = zio_worst_error(pio->io_error, zio->io_error);
        mutex_exit(&pio->io_lock);
 
+#ifdef __FreeBSD__
+       if (zio->io_abd != NULL)
+#endif
        abd_put(zio->io_abd);
 }
 
@@ -1262,8 +1265,12 @@ vdev_indirect_io_start(zio_t *zio)
        zio->io_vsd_ops = &vdev_indirect_vsd_ops;
 
        ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
+#ifdef __FreeBSD__
+       if (zio->io_type == ZIO_TYPE_WRITE) {
+#else
        if (zio->io_type != ZIO_TYPE_READ) {
                ASSERT3U(zio->io_type, ==, ZIO_TYPE_WRITE);
+#endif
                /*
                 * Note: this code can handle other kinds of writes,
                 * but we don't expect them.
@@ -1295,6 +1302,9 @@ vdev_indirect_io_start(zio_t *zio)
                ASSERT3P(list_next(&iv->iv_splits, first), ==, NULL);
                zio_nowait(zio_vdev_child_io(zio, zio->io_bp,
                    first->is_vdev, first->is_target_offset,
+#ifdef __FreeBSD__
+                   zio->io_abd == NULL ? NULL :
+#endif
                    abd_get_offset(zio->io_abd, 0),
                    zio->io_size, zio->io_type, zio->io_priority, 0,
                    vdev_indirect_child_io_done, zio));
@@ -1321,6 +1331,9 @@ vdev_indirect_io_start(zio_t *zio)
                            is != NULL; is = list_next(&iv->iv_splits, is)) {
                                zio_nowait(zio_vdev_child_io(zio, NULL,
                                    is->is_vdev, is->is_target_offset,
+#ifdef __FreeBSD__
+                                   zio->io_abd == NULL ? NULL :
+#endif
                                    abd_get_offset(zio->io_abd,
                                    is->is_split_offset),
                                    is->is_size, zio->io_type,
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