diff options
Diffstat (limited to 'fs/nfs/delegation.c')
| -rw-r--r-- | fs/nfs/delegation.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 618a327027b3..75dfb1c717a0 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -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. */ |