diff --git a/block/io.c b/block/io.c
index 8ab6f95477c9116e8291ef6be37c3a5a0d42ca0f..7cf3645ade324ae5be549dc344bad5feae85b5a3 100644
--- a/block/io.c
+++ b/block/io.c
@@ -2350,6 +2350,11 @@ int coroutine_fn bdrv_co_discard(BlockDriverState *bs, int64_t sector_num,
     tracked_request_begin(&req, bs, sector_num << BDRV_SECTOR_BITS,
                           nb_sectors << BDRV_SECTOR_BITS, BDRV_TRACKED_DISCARD);
 
+    ret = notifier_with_return_list_notify(&bs->before_write_notifiers, &req);
+    if (ret < 0) {
+        goto out;
+    }
+
     max_discard = MIN_NON_ZERO(bs->bl.max_discard, BDRV_REQUEST_MAX_SECTORS);
     while (nb_sectors > 0) {
         int ret;