This patch aborts SUNRPC tasks upon raise of per-net "kill_tasks" toggle.
This is needed to abort pernding tasks, which are waiting for timeout.
Signed-off-by: Stanislav Kinsburskiy <skinsbur...@virtuozzo.com>
---
net/sunrpc/clnt.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 2635c49..8543de4 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -2537,6 +2537,20 @@ retry:
EXPORT_SYMBOL_GPL(rpc_clnt_swap_deactivate);
#endif /* CONFIG_SUNRPC_SWAP */
+static void rpc_kill_tasks(struct net *net)
+{
+ struct rpc_clnt *clnt;
+ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
+
+ spin_lock(&sn->rpc_client_lock);
+ list_for_each_entry(clnt, &sn->all_clients, cl_clients) {
+ spin_lock(&clnt->cl_lock);
+ xprt_wake_pending_tasks(clnt->cl_xprt, -EIO);
+ spin_unlock(&clnt->cl_lock);
+ }
+ spin_unlock(&sn->rpc_client_lock);
+}
+
static ssize_t write_kill_tasks(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
@@ -2556,6 +2570,10 @@ static ssize_t write_kill_tasks(struct file *file, const
char __user *buf,
if (res)
return res;
+ /* Kill pending tasks */
+ if (kill_tasks && !sn->kill_tasks)
+ rpc_kill_tasks(net);
+
sn->kill_tasks = !!kill_tasks;
return count;
}
_______________________________________________
Devel mailing list
Devel@openvz.org
https://lists.openvz.org/mailman/listinfo/devel
