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e9e6f3ec53
Scenario: Something (say, flush-147:0) is in drbd_al_begin_io, holding a local_cnt, waiting for the resync to make progress. Disk fails, worker in after_state_ch does drbd_rs_cancel_all, then waits for local_cnt to drop to zero. flush-147:0 is woken by drbd_rs_cancel_all, needs to write an AL transaction, and queues that on the worker. Deadlock. Fix: do not wait in the worker, have put_ldev() trigger the state change D_FAILED -> D_DISKLESS when necessary. put_ldev() cannot do the state change directly, as it may or may not already hold various spinlocks. We queue a short work instead. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> |
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| .. | ||
| drbd_actlog.c | ||
| drbd_bitmap.c | ||
| drbd_int.h | ||
| drbd_main.c | ||
| drbd_nl.c | ||
| drbd_proc.c | ||
| drbd_receiver.c | ||
| drbd_req.c | ||
| drbd_req.h | ||
| drbd_strings.c | ||
| drbd_vli.h | ||
| drbd_worker.c | ||
| drbd_wrappers.h | ||
| Kconfig | ||
| Makefile | ||