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-rw-r--r--include/libzfs_impl.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/libzfs_impl.h b/include/libzfs_impl.h
index 26e042964739..dfb63285c1fd 100644
--- a/include/libzfs_impl.h
+++ b/include/libzfs_impl.h
@@ -166,6 +166,10 @@ int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
* changelist_gather() flag to force it to iterate on mounted datasets only
*/
#define CL_GATHER_ITER_MOUNTED 2
+/*
+ * Use this changelist_gather() flag to prevent unmounting of file systems.
+ */
+#define CL_GATHER_DONT_UNMOUNT 4
typedef struct prop_changelist prop_changelist_t;