diff options
Diffstat (limited to 'drivers/block/drbd/drbd_req.c')
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 889175110c91..a3f6b04ebaba 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1002,7 +1002,13 @@ allocate_barrier: congested = 1; } - if (congested) { + if (congested && atomic_read(&mdev->rs_pending_cnt) == 0) { + /* rs_pending_cnt must be zero, otherwise the two peers + might get different bitmaps. With sane configurations + the resync stalls long before we might want to go into + AHEAD mode. + We could force the resync into PAUSE mode here if + rs_pending_cnt is > 0 ... */ queue_barrier(mdev); if (mdev->net_conf->on_congestion == OC_PULL_AHEAD) |
