From: Sowmini Varadhan <[email protected]> Date: Thu, 4 Jan 2018 06:52:58 -0800
> This patchset follows up on the root-cause mentioned in > https://www.spinics.net/lists/netdev/msg472849.html > > Patch1 implements some code refactoring that was suggeseted > as an enhancement in http://patchwork.ozlabs.org/patch/843157/ > It replaces the c_destroy_in_prog bit in rds_connection with > an atomically managed flag in rds_conn_path. > > Patch2 builds on Patch1 and uses RCU to make sure that > work is only enqueued if the connection destroy is not already > in progress: the test-flag-and-enqueue is done under rcu_read_lock, > while destroy first sets the flag, uses synchronize_rcu to > wait for existing reader threads to complete, and then starts > all the work-cancellation. > > Since I have not been able to reproduce the original stack traces > reported by syszbot, and these are fixes for a race condition that > are based on code-inspection I am not marking these as reported-by > at this time. Series applied, thank you.
