I'm about to change task->tk_start from a jiffies value to a ktime_t
value in order to make RPC RTT reporting more precise.
Recently (commit dc96aef9) nfs4_renew_done() started to reference
task->tk_start so that a jiffies value no longer had to be passed
from nfs4_proc_async_renew(). This allowed the calldata to point to
an nfs_client instead.
Changing task->tk_start to a ktime_t value makes it effectively
useless for renew timestamps, so we need to restore the pre-dc96aef9
logic that provided a jiffies "start" timestamp to nfs4_renew_done().
Both an nfs_client pointer and a timestamp need to be passed to
nfs4_renew_done(), so create a new nfs_renewdata structure that
contains both, resembling what is already done for delegreturn,
lock, and unlock.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 26 ++++++++++++++++++++------
1 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6380670..9a16431 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3146,23 +3146,31 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
+struct nfs4_renewdata {
+ struct nfs_client *client;
+ unsigned long timestamp;
+};
+
/*
* nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
* standalone procedure for queueing an asynchronous RENEW.
*/
-static void nfs4_renew_release(void *data)
+static void nfs4_renew_release(void *calldata)
{
- struct nfs_client *clp = data;
+ struct nfs4_renewdata *data = calldata;
+ struct nfs_client *clp = data->client;
if (atomic_read(&clp->cl_count) > 1)
nfs4_schedule_state_renewal(clp);
nfs_put_client(clp);
+ kfree(data);
}
-static void nfs4_renew_done(struct rpc_task *task, void *data)
+static void nfs4_renew_done(struct rpc_task *task, void *calldata)
{
- struct nfs_client *clp = data;
- unsigned long timestamp = task->tk_start;
+ struct nfs4_renewdata *data = calldata;
+ struct nfs_client *clp = data->client;
+ unsigned long timestamp = data->timestamp;
if (task->tk_status < 0) {
/* Unless we're shutting down, schedule state recovery! */
@@ -3188,11 +3196,17 @@ int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
.rpc_argp = clp,
.rpc_cred = cred,
};
+ struct nfs4_renewdata *data;
if (!atomic_inc_not_zero(&clp->cl_count))
return -EIO;
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+ data->client = clp;
+ data->timestamp = jiffies;
return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
- &nfs4_renew_ops, clp);
+ &nfs4_renew_ops, (void *)data);
}
int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
--
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