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NFS: Generalise the nfs_client structure

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Generalise the nfs_client structure by:

 (1) Moving nfs_client to a more general place (nfs_fs_sb.h).

 (2) Renaming its maintenance routines to be non-NFS4 specific.

 (3) Move those maintenance routines to a new non-NFS4 specific file (client.c)
     and move the declarations to internal.h.

 (4) Make nfs_find/get_client() take a full sockaddr_in to include the port
     number (will be required for NFS2/3).

 (5) Make nfs_find/get_client() take the NFS protocol version (again will be
     required to differentiate NFS2, 3 & 4 client records).

Also:

 (6) Make nfs_client construction proceed akin to inodes, marking them as under
     construction and providing a function to indicate completion.

 (7) Make nfs_get_client() wait interruptibly if it finds a client that it can
     share, but that client is currently being constructed.

 (8) Make nfs4_create_client() use (6) and (7) instead of locking cl_sem.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
David Howells
2006-08-22 20:06:10 -04:00
committed by Trond Myklebust
parent e9326dcab4
commit 24c8dbbb5f
12 changed files with 425 additions and 222 deletions
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9
fs/nfs/delegation.c
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@ -18,6 +18,7 @@
#include "nfs4_fs.h"
#include "delegation.h"
#include "internal.h"
static struct nfs_delegation *nfs_alloc_delegation(void)
{
@ -145,7 +146,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
sizeof(delegation->stateid)) != 0 ||
delegation->type != nfsi->delegation->type) {
printk("%s: server %u.%u.%u.%u, handed out a duplicate delegation!\n",
__FUNCTION__, NIPQUAD(clp->cl_addr));
__FUNCTION__, NIPQUAD(clp->cl_addr.sin_addr));
status = -EIO;
}
}
@ -254,7 +255,7 @@ restart:
}
out:
spin_unlock(&clp->cl_lock);
nfs4_put_client(clp);
nfs_put_client(clp);
module_put_and_exit(0);
}
@ -266,10 +267,10 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
atomic_inc(&clp->cl_count);
task = kthread_run(nfs_do_expire_all_delegations, clp,
"%u.%u.%u.%u-delegreturn",
NIPQUAD(clp->cl_addr));
NIPQUAD(clp->cl_addr.sin_addr));
if (!IS_ERR(task))
return;
nfs4_put_client(clp);
nfs_put_client(clp);
module_put(THIS_MODULE);
}