The branch main has been updated by mm:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=8ee579abe09ec1fe15c588fc9a08370b83b81cd6

commit 8ee579abe09ec1fe15c588fc9a08370b83b81cd6
Author:     Martin Matuska <[email protected]>
AuthorDate: 2023-04-04 11:40:41 +0000
Commit:     Martin Matuska <[email protected]>
CommitDate: 2023-04-04 11:43:34 +0000

    zfs: fall back if block_cloning feature is disabled
    
    If block_cloning is disabled, or other errors from zfs_clone_range()
    return an EXDEV we should fall back to vn_generic_copy_file_range().
    
    This fixes issues when copying files on the same dataset with
    block_cloning disabled.
    
    Upstreamed as pull request to OpenZFS.
    
    Reviewed by:    Mateusz Guzik <[email protected]>
    OpenZFS pull request:   14713
---
 .../openzfs/module/os/freebsd/zfs/zfs_vnops_os.c        | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c 
b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
index 97429b360a36..2cd1d27e37bc 100644
--- a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
+++ b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
@@ -6243,13 +6243,6 @@ zfs_freebsd_copy_file_range(struct 
vop_copy_file_range_args *ap)
        int error;
        uint64_t len = *ap->a_lenp;
 
-       /*
-        * TODO: If offset/length is not aligned to recordsize, use
-        * vn_generic_copy_file_range() on this fragment.
-        * It would be better to do this after we lock the vnodes, but then we
-        * need something else than vn_generic_copy_file_range().
-        */
-
        /* Lock both vnodes, avoiding risk of deadlock. */
        do {
                mp = NULL;
@@ -6300,6 +6293,16 @@ unlock:
        if (mp != NULL)
                vn_finished_write(mp);
 
+       /*
+        * Fall back if block_cloning feature is disabled
+        * or other EXDEV failures from zfs_vnops.c
+        */
+       if (error == EXDEV) {
+               error = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
+                           ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags,
+                           ap->a_incred, ap->a_outcred, ap->a_fsizetd);
+       }
+
        return (error);
 }
 

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