xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rxrpc: Add RCU destruction for connections and calls

Browse Source 
Add RCU destruction for connections and calls as the RCU lookup from the
transport socket data_ready handler is going to come along shortly.

Whilst we're at it, move the cleanup workqueue flushing and RCU barrierage
into the destruction code for the objects that need it (locals and
connections) and add the extra RCU barrier required for connection cleanup.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2016-06-27 17:11:19 +01:00
parent e653cfe49c
commit dee46364ce
6 changed files with 60 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
net/rxrpc/ar-internal.h
View File

@@ -292,9 +292,10 @@ struct rxrpc_connection {
struct rxrpc_conn_parameters params;
spinlock_t channel_lock;
struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* active calls */
struct rxrpc_call __rcu *channels[RXRPC_MAXCALLS]; /* active calls */
wait_queue_head_t channel_wq; /* queue to wait for channel to become available */
struct rcu_head rcu;
struct work_struct processor; /* connection event processor */
union {
struct rb_node client_node; /* Node in local->client_conns */
@@ -398,6 +399,7 @@ enum rxrpc_call_state {
* - matched by { connection, call_id }
*/
struct rxrpc_call {
struct rcu_head rcu;
struct rxrpc_connection *conn; /* connection carrying call */
struct rxrpc_sock *socket; /* socket responsible */
struct timer_list lifetimer; /* lifetime remaining on call */