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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2014-02-11 09:30:49 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2014-07-10 18:34:55 +0200 |
| commit | e334f55095b908f12c8bad991433f5d609e919d1 (patch) | |
| tree | 00b88836a6eda4beeaea106f50fd423fc02d4043 /kernel/irq | |
| parent | drbd: close race when detaching from disk (diff) | |
| download | linux-e334f55095b908f12c8bad991433f5d609e919d1.tar.xz linux-e334f55095b908f12c8bad991433f5d609e919d1.zip | |
drbd: make sure disk cleanup happens in worker context
The recent fix to put_ldev() (correct ordering of access to local_cnt
and state.disk; memory barrier in __drbd_set_state) guarantees
that the cleanup happens exactly once.
However it does not yet guarantee that the cleanup happens from worker
context, the last put_ldev() may still happen from atomic context,
which must not happen: blkdev_put() may sleep.
Fix this by scheduling the cleanup to the worker instead,
using a couple more bits in device->flags and a new helper,
drbd_device_post_work().
Generalized the "resync progress" work to cover these new work bits.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'kernel/irq')
0 files changed, 0 insertions, 0 deletions