From 34a06bd6b6fa92ccd9d3e6866b6cb91264c3cd20 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 12 Mar 2013 11:30:00 -0700 Subject: [PATCH] workqueue: replace POOL_MANAGING_WORKERS flag with worker_pool->manager_arb POOL_MANAGING_WORKERS is used to synchronize the manager role. Synchronizing among workers doesn't need blocking and that's why it's implemented as a flag. It got converted to a mutex a while back to add blocking wait from CPU hotplug path - 6037315269 ("workqueue: use mutex for global_cwq manager exclusion"). Later it turned out that synchronization among workers and cpu hotplug need to be done separately. Eventually, POOL_MANAGING_WORKERS is restored and workqueue->manager_mutex got morphed into workqueue->assoc_mutex - 552a37e936 ("workqueue: restore POOL_MANAGING_WORKERS") and b2eb83d123 ("workqueue: rename manager_mutex to assoc_mutex"). Now, we're gonna need to be able to lock out managers from destroy_workqueue() to support multiple unbound pools with custom attributes making it again necessary to be able to block on the manager role. This patch replaces POOL_MANAGING_WORKERS with worker_pool->manager_arb. This patch doesn't introduce any behavior changes. v2: s/manager_mutex/manager_arb/ Signed-off-by: Tejun Heo --- Reading git-format-patch failed