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dsl_dataset_promote_sync: populate 'oldname' before using it

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It's very unlikely that zfsvfs_update_fromname() and
zvol_rename_minors() ever did anything during the promote operation as
the old name was not initialized.

MFC after:	1 week
This commit is contained in:
Andriy Gapon 2020-02-27 14:12:43 +00:00
parent 4312ebfe0b
commit 6b47663df5
1 changed files with 4 additions and 0 deletions
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4
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
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@ -3109,6 +3109,10 @@ dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx)
ds->ds_objset = NULL; ds->ds_objset = NULL;
} }
#if defined(__FreeBSD__) && defined(_KERNEL)
dsl_dataset_name(ds, oldname);
#endif
/* move snap name entry */ /* move snap name entry */
VERIFY0(dsl_dataset_get_snapname(ds)); VERIFY0(dsl_dataset_get_snapname(ds));
VERIFY0(dsl_dataset_snap_remove(origin_head, VERIFY0(dsl_dataset_snap_remove(origin_head,