The branch main has been updated by markj:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=96092bf9108c97b45d18fd26fbe91f2d1c7799b8

commit 96092bf9108c97b45d18fd26fbe91f2d1c7799b8
Author:     Mark Johnston <[email protected]>
AuthorDate: 2023-10-23 15:08:04 +0000
Commit:     Mark Johnston <[email protected]>
CommitDate: 2023-10-23 15:12:14 +0000

    makefs/zfs: Fill out dd_used_breakdown fields in DSL directories
    
    This is required for the "used", "usedds" and "usedchild" dataset
    properties to be displayed.
    
    PR:             274613
    Reported by:    Mike Tancsa <[email protected]>
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
---
 usr.sbin/makefs/zfs/dsl.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/usr.sbin/makefs/zfs/dsl.c b/usr.sbin/makefs/zfs/dsl.c
index a9ab93a90c38..f7abebe2e245 100644
--- a/usr.sbin/makefs/zfs/dsl.c
+++ b/usr.sbin/makefs/zfs/dsl.c
@@ -482,7 +482,7 @@ dsl_dir_finalize(zfs_opt_t *zfs, zfs_dsl_dir_t *dir, void 
*arg __unused)
        dnode_phys_t *snapnames;
        zfs_dsl_dataset_t *headds;
        zfs_objset_t *os;
-       uint64_t bytes, snapnamesid;
+       uint64_t bytes, childbytes, snapnamesid;
 
        dsl_dir_finalize_props(dir);
        zap_write(zfs, dir->propszap);
@@ -514,6 +514,7 @@ dsl_dir_finalize(zfs_opt_t *zfs, zfs_dsl_dir_t *dir, void 
*arg __unused)
        headds->phys->ds_uncompressed_bytes = bytes;
        headds->phys->ds_compressed_bytes = bytes;
 
+       childbytes = 0;
        STAILQ_FOREACH(cdir, &dir->children, next) {
                /*
                 * The root directory needs a special case: the amount of
@@ -523,9 +524,13 @@ dsl_dir_finalize(zfs_opt_t *zfs, zfs_dsl_dir_t *dir, void 
*arg __unused)
                 */
                if (dir == zfs->rootdsldir && cdir == zfs->mosdsldir)
                        continue;
-               bytes += cdir->phys->dd_used_bytes;
+               childbytes += cdir->phys->dd_used_bytes;
        }
-       dsl_dir_size_add(dir, bytes);
+       dsl_dir_size_add(dir, bytes + childbytes);
+
+       dir->phys->dd_flags |= DD_FLAG_USED_BREAKDOWN;
+       dir->phys->dd_used_breakdown[DD_USED_HEAD] = bytes;
+       dir->phys->dd_used_breakdown[DD_USED_CHILD] = childbytes;
 }
 
 void

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