[PATCH] nfsv4 delegation: Convert to kthread API

["Eric W. Biederman" <ebiederm@xmission.com>]

From: Eric W. Biederman <ebiederm@xmission.com> - unquoted

To start the nfsv4-delegreturn thread this patch uses
kthread_run instead of a combination of kernel_thread
and daemonize.

In addition allow_signal(SIGKILL) is removed from
the expire delegations thread.

Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
 fs/nfs/delegation.c |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 841c99a..7b9b88c 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -232,7 +232,6 @@ int nfs_do_expire_all_delegations(void *ptr)
 	struct nfs_delegation *delegation;
 	struct inode *inode;
 
-	allow_signal(SIGKILL);
 restart:
 	spin_lock(&clp->cl_lock);
 	if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) != 0)
@@ -310,8 +309,6 @@ static int recall_thread(void *data)
 	struct nfs_inode *nfsi = NFS_I(inode);
 	struct nfs_delegation *delegation;
 
-	daemonize("nfsv4-delegreturn");
-
 	nfs_msync_inode(inode);
 	down_read(&clp->cl_sem);
 	down_write(&nfsi->rwsem);
@@ -350,18 +347,18 @@ int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *s
 		.inode = inode,
 		.stateid = stateid,
 	};
-	int status;
+	struct task_struct *task;
 
 	init_completion(&data.started);
 	__module_get(THIS_MODULE);
-	status = kernel_thread(recall_thread, &data, CLONE_KERNEL);
-	if (status < 0)
+	task = kthread_run(recall_thread, &data, "nfsv4-delegreturn");
+	if (IS_ERR(task))
 		goto out_module_put;
 	wait_for_completion(&data.started);
 	return data.result;
 out_module_put:
 	module_put(THIS_MODULE);
-	return status;
+	return PTR_ERR(task);
 }
 
 /*
-- 
1.5.0.g53756

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