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| author | Alexandros Batsakis <batsakis@netapp.com> | 2010-02-05 03:45:04 -0800 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-03-02 12:44:07 -0500 |
| commit | dc96aef96a75348b4d1b01c4c0429ab52780683e (patch) | |
| tree | 1bd4755b97367a8db0e2ea949cb3a4fd84ec3a66 /fs/nfs/nfs4proc.c | |
| parent | 888ef2e3f8b7b8daeb031bfb4ad1fd4fa817e193 (diff) | |
| download | linux-dc96aef96a75348b4d1b01c4c0429ab52780683e.tar.gz linux-dc96aef96a75348b4d1b01c4c0429ab52780683e.tar.bz2 linux-dc96aef96a75348b4d1b01c4c0429ab52780683e.zip | |
nfs: prevent backlogging of renewd requests
If the renewd send queue gets backlogged (e.g., if the server goes down),
we will keep filling the queue with periodic RENEW/SEQUENCE requests.
This patch schedules a new renewd request if and only if the previous one
returns (either success or failure)
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
[Trond.Myklebust@netapp.com: moved nfs4_schedule_state_renewal() into
separate nfs4_renew_release() and nfs41_sequence_release() callbacks
to ensure correct behaviour on call setup failure]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 84b53d38f50b..726bc195039d 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3147,10 +3147,17 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa * 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) +{ + struct nfs_client *clp = data; + + nfs4_schedule_state_renewal(clp); +} + static void nfs4_renew_done(struct rpc_task *task, void *data) { - struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; - unsigned long timestamp = (unsigned long)data; + struct nfs_client *clp = data; + unsigned long timestamp = task->tk_start; if (task->tk_status < 0) { /* Unless we're shutting down, schedule state recovery! */ @@ -3166,6 +3173,7 @@ static void nfs4_renew_done(struct rpc_task *task, void *data) static const struct rpc_call_ops nfs4_renew_ops = { .rpc_call_done = nfs4_renew_done, + .rpc_release = nfs4_renew_release, }; int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) @@ -3177,7 +3185,7 @@ int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) }; return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, - &nfs4_renew_ops, (void *)jiffies); + &nfs4_renew_ops, clp); } int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) @@ -5023,7 +5031,14 @@ static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) &res, args.sa_cache_this, 1); } -void nfs41_sequence_call_done(struct rpc_task *task, void *data) +static void nfs41_sequence_release(void *data) +{ + struct nfs_client *clp = (struct nfs_client *)data; + + nfs4_schedule_state_renewal(clp); +} + +static void nfs41_sequence_call_done(struct rpc_task *task, void *data) { struct nfs_client *clp = (struct nfs_client *)data; @@ -5064,6 +5079,7 @@ static void nfs41_sequence_prepare(struct rpc_task *task, void *data) static const struct rpc_call_ops nfs41_sequence_ops = { .rpc_call_done = nfs41_sequence_call_done, .rpc_call_prepare = nfs41_sequence_prepare, + .rpc_release = nfs41_sequence_release, }; static int nfs41_proc_async_sequence(struct nfs_client *clp, |