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| author | Nikolay Borisov <kernel@kyup.com> | 2015-12-17 18:03:35 +0200 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2016-02-02 17:38:40 +0000 |
| commit | 1ab09128f5d43874dc3b4d661459e57ccb9eaed5 (patch) | |
| tree | 56e1337605608aa799b7cfd5484c38ebea5ac125 /kernel | |
| parent | cbddacc6bd2f4b4332998d3f5adadd5aba0ed3e4 (diff) | |
dm thin: fix race condition when destroying thin pool workqueue
commit 18d03e8c25f173f4107a40d0b8c24defb6ed69f3 upstream.
When a thin pool is being destroyed delayed work items are
cancelled using cancel_delayed_work(), which doesn't guarantee that on
return the delayed item isn't running. This can cause the work item to
requeue itself on an already destroyed workqueue. Fix this by using
cancel_delayed_work_sync() which guarantees that on return the work item
is not running anymore.
Fixes: 905e51b39a555 ("dm thin: commit outstanding data every second")
Fixes: 85ad643b7e7e5 ("dm thin: add timeout to stop out-of-data-space mode holding IO forever")
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions