[PATCH 2/3] dm array: fix unreleased btree blocks on closing a faulty array cursor

[Ming-Hung Tsai <mtsai@xxxxxxxxxx>]

The cached block pointer in dm_array_cursor might be NULL if it reaches
an unreadable array block, or the array is empty. Therefore,
dm_array_cursor_end() should call dm_btree_cursor_end() unconditionally,
to prevent leaving unreleased btree blocks.

Signed-off-by: Ming-Hung Tsai <mtsai@xxxxxxxxxx>
Fixes: fdd1315aa5f0 ("dm array: introduce cursor api")
---
 drivers/md/persistent-data/dm-array.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/md/persistent-data/dm-array.c b/drivers/md/persistent-data/dm-array.c
index c46a374f7459..1c3af717ee4f 100644
--- a/drivers/md/persistent-data/dm-array.c
+++ b/drivers/md/persistent-data/dm-array.c
@@ -961,10 +961,10 @@ EXPORT_SYMBOL_GPL(dm_array_cursor_begin);
 
 void dm_array_cursor_end(struct dm_array_cursor *c)
 {
-	if (c->block) {
+	if (c->block)
 		unlock_ablock(c->info, c->block);
-		dm_btree_cursor_end(&c->cursor);
-	}
+
+	dm_btree_cursor_end(&c->cursor);
 }
 EXPORT_SYMBOL_GPL(dm_array_cursor_end);
 
-- 
2.47.0