tree 5f659c3125cb4dd901bfb15532c3ac051f94c8cc
parent 09b9e7979378fe070784de20e50bb1d42aa643ab
author Lars Ellenberg <lars.ellenberg@linbit.com> 1291554674 +0100
committer Philipp Reisner <philipp.reisner@linbit.com> 1299753320 +0100

drbd: fix regression, we need to close drbd epochs during normal operation

commit e2041475e6ddb081734d161f6421977323f5a9b9
drbd: Starting with protocol 96 we can allow app-IO while receiving the bitmap

Contained a bad chunk that tried to optimize away drbd barriers during
bitmap exchange, but accidentally dropped them for normal mode as well.

Impact: depending on activity log size and access pattern, activity log
extents may not be recycled in time, causeing IO to block indefinetely.

Fix: skip drbd barriers only if there is no connection to send them on,
or the request being completed has not been on the network at all.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>