diff options
| -rw-r--r-- | module/zfs/dbuf.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c index fbeac866a..b7453578a 100644 --- a/module/zfs/dbuf.c +++ b/module/zfs/dbuf.c @@ -4457,6 +4457,15 @@ dbuf_sync_leaf(dbuf_dirty_record_t *dr, dmu_tx_t *tx) } else if (db->db_state == DB_FILL) { /* This buffer was freed and is now being re-filled */ ASSERT(db->db.db_data != dr->dt.dl.dr_data); + } else if (db->db_state == DB_READ) { + /* + * This buffer has a clone we need to write, and an in-flight + * read on the BP we're about to clone. Its safe to issue the + * write here because the read has already been issued and the + * contents won't change. + */ + ASSERT(dr->dt.dl.dr_brtwrite && + dr->dt.dl.dr_override_state == DR_OVERRIDDEN); } else { ASSERT(db->db_state == DB_CACHED || db->db_state == DB_NOFILL); } |