lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

NFSv4: Send RENEW requests to the server only when we're holding state

Browse Source 
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2006-01-03 09:55:24 +01:00
parent 5043e900f5
commit 58d9714a44
5 changed files with 75 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
fs/nfs/delegation.c
View File

@@ -8,6 +8,7 @@
*/
#include <linux/config.h>
#include <linux/completion.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
@@ -231,6 +232,51 @@ restart:
spin_unlock(&clp->cl_lock);
}
int nfs_do_expire_all_delegations(void *ptr)
{
struct nfs4_client *clp = ptr;
struct nfs_delegation *delegation;
struct inode *inode;
int err = 0;
allow_signal(SIGKILL);
restart:
spin_lock(&clp->cl_lock);
if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) != 0)
goto out;
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0)
goto out;
list_for_each_entry(delegation, &clp->cl_delegations, super_list) {
inode = igrab(delegation->inode);
if (inode == NULL)
continue;
spin_unlock(&clp->cl_lock);
err = nfs_inode_return_delegation(inode);
iput(inode);
if (!err)
goto restart;
}
out:
spin_unlock(&clp->cl_lock);
nfs4_put_client(clp);
module_put_and_exit(0);
}
void nfs_expire_all_delegations(struct nfs4_client *clp)
{
struct task_struct *task;
__module_get(THIS_MODULE);
atomic_inc(&clp->cl_count);
task = kthread_run(nfs_do_expire_all_delegations, clp,
"%u.%u.%u.%u-delegreturn",
NIPQUAD(clp->cl_addr));
if (!IS_ERR(task))
return;
nfs4_put_client(clp);
module_put(THIS_MODULE);
}
/*
* Return all delegations following an NFS4ERR_CB_PATH_DOWN error.
*/