diff options
| -rw-r--r-- | storage/innobase/os/os0file.cc | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/storage/innobase/os/os0file.cc b/storage/innobase/os/os0file.cc index 10a8f44b062..98a328c7f47 100644 --- a/storage/innobase/os/os0file.cc +++ b/storage/innobase/os/os0file.cc @@ -1962,10 +1962,24 @@ LinuxAIOHandler::collect() will be done in the calling function. */ m_array->acquire(); - slot->ret = events[i].res2; + /* events[i].res2 should always be ZERO */ + ut_ad(events[i].res2 == 0); slot->io_already_done = true; - slot->n_bytes = events[i].res; + /*Even though events[i].res is an unsigned number + in libaio, it is used to return a negative value + (negated errno value) to indicate error and a positive + value to indicate number of bytes read or written. */ + + if (events[i].res > slot->len) { + /* failure */ + slot->n_bytes = 0; + slot->ret = events[i].res; + } else { + /* success */ + slot->n_bytes = events[i].res; + slot->ret = 0; + } m_array->release(); } |