| commit | 9972cebb59a653cca735178a70c8ab09a5f4de1a | [log] [tgz] |
|---|---|---|
| author | Mike Christie <mchristi@redhat.com> | Tue Nov 28 12:40:30 2017 -0600 |
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | Fri Jan 12 15:07:12 2018 -0800 |
| tree | b112dbd69e692dbffe3f2acecc7c888fbfbce7ca | |
| parent | 89ec9cfd3b644fbc36047e36776509130d2fc1ec [diff] |
tcmu: fix unmap thread race If the unmap thread has already run find_free_blocks but not yet run prepare_to_wait when a wake_up(&unmap_wait) call is done, the unmap thread is going to miss the wake call. Instead of adding checks for if new waiters were added this just has us use a work queue which will run us again in this type of case. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>