The field was added to let users keep their personal data to use inside
of the callbacks.  However, no one is actively using that now.  Remove
it.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 include/linux/damon.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index 636dcdc49b22..2b783c91cbb5 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -604,12 +604,10 @@ struct damon_operations {
  * @after_aggregation:	Called after each aggregation.
  * @before_damos_apply:	Called before applying DAMOS action.
  * @before_terminate:	Called before terminating the monitoring.
- * @private:		User private data.
  *
  * The monitoring thread (&damon_ctx.kdamond) calls @before_start and
  * @before_terminate just before starting and finishing the monitoring,
- * respectively.  Therefore, those are good places for installing and cleaning
- * @private.
+ * respectively.
  *
  * The monitoring thread calls @after_wmarks_check after each DAMON-based
  * operation schemes' watermarks check.  If users need to make changes to the
@@ -625,8 +623,6 @@ struct damon_operations {
  * If any callback returns non-zero, monitoring stops.
  */
 struct damon_callback {
-	void *private;
-
 	int (*before_start)(struct damon_ctx *context);
 	int (*after_wmarks_check)(struct damon_ctx *context);
 	int (*after_sampling)(struct damon_ctx *context);
-- 
2.39.5