Add ida_destroy in zvol_fini to fix memleak

User of ida needs to call ida_destroy after using it. Otherwise
ida->free_bitmap and/or other stuff may leak.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #5484

diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index 2c99b73c2fa96b2c335215bb6df913c54559fd84..7674b3148781fe47751d23e100925139b3038213 100644 (file)
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -2085,6 +2085,8 @@ zvol_fini(void)
 
        list_destroy(&zvol_state_list);
        mutex_destroy(&zvol_state_lock);
+
+       ida_destroy(&zvol_ida);
 }
 
 /* BEGIN CSTYLED */