From: Tejun Heo Date: Fri, 14 Jan 2011 15:56:37 +0000 (+0000) Subject: afs: add afs_wq and use it instead of the system workqueue X-Git-Tag: firefly_0821_release~7613^2~2703 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0ad53eeefcbb2620b6a71ffdaad4add20b450b8b;p=firefly-linux-kernel-4.4.55.git afs: add afs_wq and use it instead of the system workqueue flush_scheduled_work() is going away. afs needs to make sure all the works it has queued have finished before being unloaded and there can be arbitrary number of pending works. Add afs_wq and use it as the flush domain instead of the system workqueue. Also, convert cancel_delayed_work() + flush_scheduled_work() to cancel_delayed_work_sync() in afs_mntpt_kill_timer(). Signed-off-by: Tejun Heo Signed-off-by: David Howells Cc: linux-afs@lists.infradead.org Signed-off-by: Linus Torvalds --- diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c index a3bcec75c54a..1c8c6cc6de30 100644 --- a/fs/afs/cmservice.c +++ b/fs/afs/cmservice.c @@ -289,7 +289,7 @@ static int afs_deliver_cb_callback(struct afs_call *call, struct sk_buff *skb, call->server = server; INIT_WORK(&call->work, SRXAFSCB_CallBack); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } @@ -336,7 +336,7 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call, call->server = server; INIT_WORK(&call->work, SRXAFSCB_InitCallBackState); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } @@ -367,7 +367,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call, call->server = server; INIT_WORK(&call->work, SRXAFSCB_InitCallBackState); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } @@ -400,7 +400,7 @@ static int afs_deliver_cb_probe(struct afs_call *call, struct sk_buff *skb, call->state = AFS_CALL_REPLYING; INIT_WORK(&call->work, SRXAFSCB_Probe); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } @@ -496,7 +496,7 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call, struct sk_buff *skb, call->state = AFS_CALL_REPLYING; INIT_WORK(&call->work, SRXAFSCB_ProbeUuid); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } @@ -580,6 +580,6 @@ static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *call, call->state = AFS_CALL_REPLYING; INIT_WORK(&call->work, SRXAFSCB_TellMeAboutYourself); - schedule_work(&call->work); + queue_work(afs_wq, &call->work); return 0; } diff --git a/fs/afs/internal.h b/fs/afs/internal.h index ab6db5abaf53..58c633b80246 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -577,6 +577,7 @@ extern int afs_drop_inode(struct inode *); /* * main.c */ +extern struct workqueue_struct *afs_wq; extern struct afs_uuid afs_uuid; /* diff --git a/fs/afs/main.c b/fs/afs/main.c index cfd1cbe25b22..42dd2e499ed8 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -30,6 +30,7 @@ module_param(rootcell, charp, 0); MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list"); struct afs_uuid afs_uuid; +struct workqueue_struct *afs_wq; /* * get a client UUID @@ -87,10 +88,16 @@ static int __init afs_init(void) if (ret < 0) return ret; + /* create workqueue */ + ret = -ENOMEM; + afs_wq = alloc_workqueue("afs", 0, 0); + if (!afs_wq) + return ret; + /* register the /proc stuff */ ret = afs_proc_init(); if (ret < 0) - return ret; + goto error_proc; #ifdef CONFIG_AFS_FSCACHE /* we want to be able to cache */ @@ -140,6 +147,8 @@ error_cell_init: error_cache: #endif afs_proc_cleanup(); +error_proc: + destroy_workqueue(afs_wq); rcu_barrier(); printk(KERN_ERR "kAFS: failed to register: %d\n", ret); return ret; @@ -163,7 +172,7 @@ static void __exit afs_exit(void) afs_purge_servers(); afs_callback_update_kill(); afs_vlocation_purge(); - flush_scheduled_work(); + destroy_workqueue(afs_wq); afs_cell_purge(); #ifdef CONFIG_AFS_FSCACHE fscache_unregister_netfs(&afs_cache_netfs); diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index 6153417caf57..e83c0336e7b5 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -268,8 +268,8 @@ static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) path_put(&nd->path); nd->path.mnt = newmnt; nd->path.dentry = dget(newmnt->mnt_root); - schedule_delayed_work(&afs_mntpt_expiry_timer, - afs_mntpt_expiry_timeout * HZ); + queue_delayed_work(afs_wq, &afs_mntpt_expiry_timer, + afs_mntpt_expiry_timeout * HZ); break; case -EBUSY: /* someone else made a mount here whilst we were busy */ @@ -295,8 +295,8 @@ static void afs_mntpt_expiry_timed_out(struct work_struct *work) if (!list_empty(&afs_vfsmounts)) { mark_mounts_for_expiry(&afs_vfsmounts); - schedule_delayed_work(&afs_mntpt_expiry_timer, - afs_mntpt_expiry_timeout * HZ); + queue_delayed_work(afs_wq, &afs_mntpt_expiry_timer, + afs_mntpt_expiry_timeout * HZ); } _leave(""); @@ -310,6 +310,5 @@ void afs_mntpt_kill_timer(void) _enter(""); ASSERT(list_empty(&afs_vfsmounts)); - cancel_delayed_work(&afs_mntpt_expiry_timer); - flush_scheduled_work(); + cancel_delayed_work_sync(&afs_mntpt_expiry_timer); } diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 654d8fdbf01f..e45a323aebb4 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -410,7 +410,7 @@ static void afs_rx_interceptor(struct sock *sk, unsigned long user_call_ID, if (!call) { /* its an incoming call for our callback service */ skb_queue_tail(&afs_incoming_calls, skb); - schedule_work(&afs_collect_incoming_call_work); + queue_work(afs_wq, &afs_collect_incoming_call_work); } else { /* route the messages directly to the appropriate call */ skb_queue_tail(&call->rx_queue, skb); diff --git a/fs/afs/server.c b/fs/afs/server.c index 9fdc7fe3a7bc..d59b7516e943 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -238,8 +238,8 @@ void afs_put_server(struct afs_server *server) if (atomic_read(&server->usage) == 0) { list_move_tail(&server->grave, &afs_server_graveyard); server->time_of_death = get_seconds(); - schedule_delayed_work(&afs_server_reaper, - afs_server_timeout * HZ); + queue_delayed_work(afs_wq, &afs_server_reaper, + afs_server_timeout * HZ); } spin_unlock(&afs_server_graveyard_lock); _leave(" [dead]"); @@ -285,10 +285,11 @@ static void afs_reap_server(struct work_struct *work) expiry = server->time_of_death + afs_server_timeout; if (expiry > now) { delay = (expiry - now) * HZ; - if (!schedule_delayed_work(&afs_server_reaper, delay)) { + if (!queue_delayed_work(afs_wq, &afs_server_reaper, + delay)) { cancel_delayed_work(&afs_server_reaper); - schedule_delayed_work(&afs_server_reaper, - delay); + queue_delayed_work(afs_wq, &afs_server_reaper, + delay); } break; } @@ -323,5 +324,5 @@ void __exit afs_purge_servers(void) { afs_server_timeout = 0; cancel_delayed_work(&afs_server_reaper); - schedule_delayed_work(&afs_server_reaper, 0); + queue_delayed_work(afs_wq, &afs_server_reaper, 0); } diff --git a/fs/afs/vlocation.c b/fs/afs/vlocation.c index 9ac260d1361d..431984d2e372 100644 --- a/fs/afs/vlocation.c +++ b/fs/afs/vlocation.c @@ -507,8 +507,8 @@ void afs_put_vlocation(struct afs_vlocation *vl) _debug("buried"); list_move_tail(&vl->grave, &afs_vlocation_graveyard); vl->time_of_death = get_seconds(); - schedule_delayed_work(&afs_vlocation_reap, - afs_vlocation_timeout * HZ); + queue_delayed_work(afs_wq, &afs_vlocation_reap, + afs_vlocation_timeout * HZ); /* suspend updates on this record */ if (!list_empty(&vl->update)) { @@ -561,11 +561,11 @@ static void afs_vlocation_reaper(struct work_struct *work) if (expiry > now) { delay = (expiry - now) * HZ; _debug("delay %lu", delay); - if (!schedule_delayed_work(&afs_vlocation_reap, - delay)) { + if (!queue_delayed_work(afs_wq, &afs_vlocation_reap, + delay)) { cancel_delayed_work(&afs_vlocation_reap); - schedule_delayed_work(&afs_vlocation_reap, - delay); + queue_delayed_work(afs_wq, &afs_vlocation_reap, + delay); } break; } @@ -620,7 +620,7 @@ void afs_vlocation_purge(void) destroy_workqueue(afs_vlocation_update_worker); cancel_delayed_work(&afs_vlocation_reap); - schedule_delayed_work(&afs_vlocation_reap, 0); + queue_delayed_work(afs_wq, &afs_vlocation_reap, 0); } /*