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| author | Mike Christie <mchristi@redhat.com> | 2017-11-28 12:40:30 -0600 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2018-01-12 15:07:12 -0800 |
| commit | 9972cebb59a653cca735178a70c8ab09a5f4de1a (patch) | |
| tree | b112dbd69e692dbffe3f2acecc7c888fbfbce7ca /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | tcmu: split unmap_thread_fn (diff) | |
| download | linux-9972cebb59a653cca735178a70c8ab09a5f4de1a.tar.gz linux-9972cebb59a653cca735178a70c8ab09a5f4de1a.zip | |
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>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions