Fix a bug in ploop_data_pio_end. If piwb is already completed, which can happen if we attach a flush pio to it, pio is not added to the list and ploop_pio_endio is never called on it. This results in a hang since pio is never completed.
Avoid this by calling ploop_pio_endio directly in case piwb is already completed. https://virtuozzo.atlassian.net/browse/VSTOR-91821 Signed-off-by: Alexander Atanasov <alexander.atana...@virtuozzo.com> --- drivers/md/dm-ploop-map.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/md/dm-ploop-map.c b/drivers/md/dm-ploop-map.c index 6192ddca3693..276e8cf3b178 100644 --- a/drivers/md/dm-ploop-map.c +++ b/drivers/md/dm-ploop-map.c @@ -1204,6 +1204,9 @@ static bool ploop_data_pio_end(struct pio *pio) else if (!pio->bi_status) pio->bi_status = piwb->bi_status; spin_unlock_irqrestore(&piwb->lock, flags); + /* If pio is late then end it here. this can happen with flushes */ + if (completed) + ploop_pio_endio(pio); ploop_put_piwb(piwb); -- 2.43.0 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
