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NFSv4: Clean up nfs_expire_all_delegations() 

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@netapp.com>
This commit is contained in:
Trond Myklebust 2008-12-23 15:21:50 -05:00
parent 0d62f85a81
commit b0d3ded1a2
4 changed files with 18 additions and 36 deletions
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31
fs/nfs/delegation.c
View File

@ -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);
}
/*

1
fs/nfs/nfs4_fs.h
View File

@ -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);

20
fs/nfs/nfs4renewd.c
View File

@ -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);
if (cred == NULL) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
spin_unlock(&clp->cl_lock);
nfs_expire_all_delegations(clp);
goto out;
}
spin_unlock(&clp->cl_lock);
/* Queue an asynchronous RENEW. */
nfs4_proc_async_renew(clp, cred);
put_rpccred(cred);
if (cred == NULL) {
if (list_empty(&clp->cl_delegations)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
nfs_expire_all_delegations(clp);
} else {
/* Queue an asynchronous RENEW. */
nfs4_proc_async_renew(clp, cred);
put_rpccred(cred);
}
timeout = (2 * lease) / 3;
spin_lock(&clp->cl_lock);
} else

2
fs/nfs/nfs4state.c
View File

@ -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;