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authorPhilipp Reisner <philipp.reisner@linbit.com>2014-11-10 17:21:14 +0100
committerJens Axboe <axboe@fb.com>2014-11-10 09:27:41 -0700
commit9581f97a687724ea41cf2e145dda4751161198c1 (patch)
tree64bcd8625412df63a422f0671a81e0f50d211319 /drivers/block
parent3b9d35d744bb5139f9fed57f38c019bb8c7d351c (diff)
downloadblackbird-op-linux-9581f97a687724ea41cf2e145dda4751161198c1.tar.gz
blackbird-op-linux-9581f97a687724ea41cf2e145dda4751161198c1.zip
drbd: Fix state change in case of connection timeout
A connection timeout affects all volumes of a resource! Under the following conditions: A resource with multiple volumes AND ko-count >=1 AND a write request triggers the timeout (ko-count * timeout) DRBD's internal state gets confused. That in turn may lead to very miss leading follow up failures. E.g. "BUG: scheduling while atomic" CC: stable@kernel.org # v3.17 Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/drbd/drbd_req.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 90319b14d5ee..3b797cd5a407 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1629,7 +1629,7 @@ void request_timer_fn(unsigned long data)
time_after(now, req_peer->pre_send_jif + ent) &&
!time_in_range(now, connection->last_reconnect_jif, connection->last_reconnect_jif + ent)) {
drbd_warn(device, "Remote failed to finish a request within ko-count * timeout\n");
- _drbd_set_state(_NS(device, conn, C_TIMEOUT), CS_VERBOSE | CS_HARD, NULL);
+ _conn_request_state(connection, NS(conn, C_TIMEOUT), CS_VERBOSE | CS_HARD);
}
if (dt && oldest_submit_jif != now &&
time_after(now, oldest_submit_jif + dt) &&
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