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[PATCH] RPC,NFS: new rpc_pipefs patch

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Currently rpc_mkdir/rpc_rmdir and rpc_mkpipe/mk_unlink have an API that's
 a little unfortunate.  They take a path relative to the rpc_pipefs root and
 thus need to perform a full lookup.  If you look at debugfs or usbfs they
 always store the dentry for directories they created and thus can pass in
 a dentry + single pathname component pair into their equivalents of the
 above functions.

 And in fact rpc_pipefs actually stores a dentry for all but one component so
 this change not only simplifies the core rpc_pipe code but also the callers.

 Unfortuntately this code path is only used by the NFS4 idmapper and
 AUTH_GSSAPI for which I don't have a test enviroment.  Could someone give
 it a spin?  It's the last bit needed before we can rework the
 lookup_hash API

 Signed-off-by: Christoph Hellwig <hch@lst.de>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Christoph Hellwig
2005-07-24 23:53:01 +01:00
committed by Trond Myklebust
parent 470056c288
commit 278c995c8a
6 changed files with 149 additions and 216 deletions
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10
fs/nfs/idmap.c
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@@ -66,7 +66,6 @@ struct idmap_hashtable {
};
struct idmap {
char idmap_path[48];
struct dentry *idmap_dentry;
wait_queue_head_t idmap_wq;
struct idmap_msg idmap_im;
@@ -102,11 +101,8 @@ nfs_idmap_new(struct nfs4_client *clp)
memset(idmap, 0, sizeof(*idmap));
snprintf(idmap->idmap_path, sizeof(idmap->idmap_path),
"%s/idmap", clp->cl_rpcclient->cl_pathname);
idmap->idmap_dentry = rpc_mkpipe(idmap->idmap_path,
idmap, &idmap_upcall_ops, 0);
idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry,
"idmap", idmap, &idmap_upcall_ops, 0);
if (IS_ERR(idmap->idmap_dentry)) {
kfree(idmap);
return;
@@ -128,7 +124,7 @@ nfs_idmap_delete(struct nfs4_client *clp)
if (!idmap)
return;
rpc_unlink(idmap->idmap_path);
rpc_unlink(idmap->idmap_dentry);
clp->cl_idmap = NULL;
kfree(idmap);
}