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-rw-r--r--fs/afs/rxrpc.c100
1 files changed, 54 insertions, 46 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index bd44ae8b63d8..ea1460b9b71a 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -134,6 +134,7 @@ static struct afs_call *afs_alloc_call(struct afs_net *net,
atomic_set(&call->usage, 1);
INIT_WORK(&call->async_work, afs_process_async_call);
init_waitqueue_head(&call->waitq);
+ spin_lock_init(&call->state_lock);
o = atomic_inc_return(&net->nr_outstanding_calls);
trace_afs_call(call, afs_call_trace_alloc, 1, o,
@@ -288,8 +289,7 @@ static void afs_notify_end_request_tx(struct sock *sock,
{
struct afs_call *call = (struct afs_call *)call_user_ID;
- if (call->state == AFS_CALL_REQUESTING)
- call->state = AFS_CALL_AWAIT_REPLY;
+ afs_set_call_state(call, AFS_CALL_CL_REQUESTING, AFS_CALL_CL_AWAIT_REPLY);
}
/*
@@ -444,82 +444,87 @@ error_kill_call:
*/
static void afs_deliver_to_call(struct afs_call *call)
{
- u32 abort_code;
+ enum afs_call_state state;
+ u32 abort_code, remote_abort = 0;
int ret;
_enter("%s", call->type->name);
- while (call->state == AFS_CALL_AWAIT_REPLY ||
- call->state == AFS_CALL_AWAIT_OP_ID ||
- call->state == AFS_CALL_AWAIT_REQUEST ||
- call->state == AFS_CALL_AWAIT_ACK
+ while (state = READ_ONCE(call->state),
+ state == AFS_CALL_CL_AWAIT_REPLY ||
+ state == AFS_CALL_SV_AWAIT_OP_ID ||
+ state == AFS_CALL_SV_AWAIT_REQUEST ||
+ state == AFS_CALL_SV_AWAIT_ACK
) {
- if (call->state == AFS_CALL_AWAIT_ACK) {
+ if (state == AFS_CALL_SV_AWAIT_ACK) {
size_t offset = 0;
ret = rxrpc_kernel_recv_data(call->net->socket,
call->rxcall,
NULL, 0, &offset, false,
- &call->abort_code,
+ &remote_abort,
&call->service_id);
trace_afs_recv_data(call, 0, offset, false, ret);
if (ret == -EINPROGRESS || ret == -EAGAIN)
return;
- if (ret < 0)
- call->error = ret;
- if (ret < 0 || ret == 1)
+ if (ret < 0 || ret == 1) {
+ if (ret == 1)
+ ret = 0;
goto call_complete;
+ }
return;
}
ret = call->type->deliver(call);
+ state = READ_ONCE(call->state);
switch (ret) {
case 0:
- if (call->state == AFS_CALL_AWAIT_REPLY)
+ if (state == AFS_CALL_CL_PROC_REPLY)
goto call_complete;
+ ASSERTCMP(state, >, AFS_CALL_CL_PROC_REPLY);
goto done;
case -EINPROGRESS:
case -EAGAIN:
goto out;
+ case -EIO:
case -ECONNABORTED:
- goto save_error;
+ ASSERTCMP(state, ==, AFS_CALL_COMPLETE);
+ goto done;
case -ENOTCONN:
abort_code = RX_CALL_DEAD;
rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
abort_code, ret, "KNC");
- goto save_error;
+ goto local_abort;
case -ENOTSUPP:
abort_code = RXGEN_OPCODE;
rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
abort_code, ret, "KIV");
- goto save_error;
+ goto local_abort;
case -ENODATA:
case -EBADMSG:
case -EMSGSIZE:
default:
abort_code = RXGEN_CC_UNMARSHAL;
- if (call->state != AFS_CALL_AWAIT_REPLY)
+ if (state != AFS_CALL_CL_AWAIT_REPLY)
abort_code = RXGEN_SS_UNMARSHAL;
rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
abort_code, -EBADMSG, "KUM");
- goto save_error;
+ goto local_abort;
}
}
done:
- if (call->state == AFS_CALL_COMPLETE && call->incoming)
+ if (state == AFS_CALL_COMPLETE && call->incoming)
afs_put_call(call);
out:
_leave("");
return;
-save_error:
- call->error = ret;
+local_abort:
+ abort_code = 0;
call_complete:
- if (call->state != AFS_CALL_COMPLETE) {
- call->state = AFS_CALL_COMPLETE;
- trace_afs_call_done(call);
- }
+ afs_set_call_complete(call, ret, remote_abort);
+ state = AFS_CALL_COMPLETE;
goto done;
}
@@ -551,14 +556,15 @@ static long afs_wait_for_call_to_complete(struct afs_call *call,
set_current_state(TASK_UNINTERRUPTIBLE);
/* deliver any messages that are in the queue */
- if (call->state < AFS_CALL_COMPLETE && call->need_attention) {
+ if (!afs_check_call_state(call, AFS_CALL_COMPLETE) &&
+ call->need_attention) {
call->need_attention = false;
__set_current_state(TASK_RUNNING);
afs_deliver_to_call(call);
continue;
}
- if (call->state == AFS_CALL_COMPLETE)
+ if (afs_check_call_state(call, AFS_CALL_COMPLETE))
break;
life = rxrpc_kernel_check_life(call->net->socket, call->rxcall);
@@ -578,17 +584,17 @@ static long afs_wait_for_call_to_complete(struct afs_call *call,
__set_current_state(TASK_RUNNING);
/* Kill off the call if it's still live. */
- if (call->state < AFS_CALL_COMPLETE) {
+ if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) {
_debug("call interrupted");
if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
- RX_USER_ABORT, -EINTR, "KWI")) {
- call->error = -ERESTARTSYS;
- trace_afs_call_done(call);
- }
+ RX_USER_ABORT, -EINTR, "KWI"))
+ afs_set_call_complete(call, -EINTR, 0);
}
+ spin_lock_bh(&call->state_lock);
ac->abort_code = call->abort_code;
ac->error = call->error;
+ spin_unlock_bh(&call->state_lock);
ret = ac->error;
switch (ret) {
@@ -713,7 +719,7 @@ void afs_charge_preallocation(struct work_struct *work)
break;
call->async = true;
- call->state = AFS_CALL_AWAIT_OP_ID;
+ call->state = AFS_CALL_SV_AWAIT_OP_ID;
init_waitqueue_head(&call->waitq);
}
@@ -769,7 +775,7 @@ static int afs_deliver_cm_op_id(struct afs_call *call)
return ret;
call->operation_ID = ntohl(call->tmp);
- call->state = AFS_CALL_AWAIT_REQUEST;
+ afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST);
call->offset = 0;
/* ask the cache manager to route the call (it'll change the call type
@@ -794,8 +800,7 @@ static void afs_notify_end_reply_tx(struct sock *sock,
{
struct afs_call *call = (struct afs_call *)call_user_ID;
- if (call->state == AFS_CALL_REPLYING)
- call->state = AFS_CALL_AWAIT_ACK;
+ afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK);
}
/*
@@ -879,6 +884,8 @@ int afs_extract_data(struct afs_call *call, void *buf, size_t count,
bool want_more)
{
struct afs_net *net = call->net;
+ enum afs_call_state state;
+ u32 remote_abort;
int ret;
_enter("{%s,%zu},,%zu,%d",
@@ -888,29 +895,30 @@ int afs_extract_data(struct afs_call *call, void *buf, size_t count,
ret = rxrpc_kernel_recv_data(net->socket, call->rxcall,
buf, count, &call->offset,
- want_more, &call->abort_code,
+ want_more, &remote_abort,
&call->service_id);
trace_afs_recv_data(call, count, call->offset, want_more, ret);
if (ret == 0 || ret == -EAGAIN)
return ret;
+ state = READ_ONCE(call->state);
if (ret == 1) {
- switch (call->state) {
- case AFS_CALL_AWAIT_REPLY:
- call->state = AFS_CALL_COMPLETE;
- trace_afs_call_done(call);
+ switch (state) {
+ case AFS_CALL_CL_AWAIT_REPLY:
+ afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY);
break;
- case AFS_CALL_AWAIT_REQUEST:
- call->state = AFS_CALL_REPLYING;
+ case AFS_CALL_SV_AWAIT_REQUEST:
+ afs_set_call_state(call, state, AFS_CALL_SV_REPLYING);
break;
+ case AFS_CALL_COMPLETE:
+ kdebug("prem complete %d", call->error);
+ return -EIO;
default:
break;
}
return 0;
}
- call->error = ret;
- call->state = AFS_CALL_COMPLETE;
- trace_afs_call_done(call);
+ afs_set_call_complete(call, ret, remote_abort);
return ret;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-28 10:18:34 +0000