Let the actual delegreturn stuff be run in the state manager thread rather
than allocating a separate kthread.
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
fs/nfs/delegation.c | 31 +++++--------------------------
fs/nfs/nfs4_fs.h | 1 +
fs/nfs/nfs4renewd.c | 16 +++++++++-------
fs/nfs/nfs4state.c | 2 +-
4 files changed, 16 insertions(+), 34 deletions(-)
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 4692fdc..21eda6c 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -354,37 +354,16 @@ static void nfs_client_mark_return_all_delegations(struct nfs_client *clp)
rcu_read_unlock();
}
-static int nfs_do_expire_all_delegations(void *ptr)
+static void nfs_delegation_run_state_manager(struct nfs_client *clp)
{
- struct nfs_client *clp = ptr;
-
- allow_signal(SIGKILL);
-
- if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0)
- goto out;
- if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0)
- goto out;
- nfs_client_mark_return_all_delegations(clp);
- nfs_client_return_marked_delegations(clp);
-out:
- nfs_put_client(clp);
- module_put_and_exit(0);
+ if (test_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state))
+ nfs4_schedule_state_manager(clp);
}
void nfs_expire_all_delegations(struct nfs_client *clp)
{
- struct task_struct *task;
-
- __module_get(THIS_MODULE);
- atomic_inc(&clp->cl_count);
- task = kthread_run(nfs_do_expire_all_delegations, clp,
- "%s-delegreturn",
- rpc_peeraddr2str(clp->cl_rpcclient,
- RPC_DISPLAY_ADDR));
- if (!IS_ERR(task))
- return;
- nfs_put_client(clp);
- module_put(THIS_MODULE);
+ nfs_client_mark_return_all_delegations(clp);
+ nfs_delegation_run_state_manager(clp);
}
/*
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index b7a12e7..ee5f51e 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -227,6 +227,7 @@ extern void nfs4_close_state(struct path *, struct nfs4_state *, mode_t);
extern void nfs4_close_sync(struct path *, struct nfs4_state *, mode_t);
extern void nfs4_state_set_mode_locked(struct nfs4_state *, mode_t);
extern void nfs4_schedule_state_recovery(struct nfs_client *);
+extern void nfs4_schedule_state_manager(struct nfs_client *);
extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c
index 6101f95..ca557e6 100644
--- a/fs/nfs/nfs4renewd.c
+++ b/fs/nfs/nfs4renewd.c
@@ -77,16 +77,18 @@ nfs4_renew_state(struct work_struct *work)
/* Are we close to a lease timeout? */
if (time_after(now, last + lease/3)) {
cred = nfs4_get_renew_cred_locked(clp);
+ spin_unlock(&clp->cl_lock);
if (cred == NULL) {
- set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
- spin_unlock(&clp->cl_lock);
+ if (list_empty(&clp->cl_delegations)) {
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ goto out;
+ }
nfs_expire_all_delegations(clp);
- goto out;
+ } else {
+ /* Queue an asynchronous RENEW. */
+ nfs4_proc_async_renew(clp, cred);
+ put_rpccred(cred);
}
- spin_unlock(&clp->cl_lock);
- /* Queue an asynchronous RENEW. */
- nfs4_proc_async_renew(clp, cred);
- put_rpccred(cred);
timeout = (2 * lease) / 3;
spin_lock(&clp->cl_lock);
} else
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 6dc36a0..cd16b30 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -781,7 +781,7 @@ static void nfs4_clear_state_manager_bit(struct nfs_client *clp)
/*
* Schedule the nfs_client asynchronous state management routine
*/
-static void nfs4_schedule_state_manager(struct nfs_client *clp)
+void nfs4_schedule_state_manager(struct nfs_client *clp)
{
struct task_struct *task;
--
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