forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

nfsd4: look up stateid's per clientid

Browse source 
Use a separate stateid idr per client, and lookup a stateid by first
finding the client, then looking up the stateid relative to that client.

Also some minor refactoring.

This allows us to improve error returns: we can return expired when the
clientid is not found and bad_stateid when the clientid is found but not
the stateid, as opposed to returning expired for both cases.

I hope this will also help to replace the state lock mostly by a
per-client lock, but that hasn't been done yet.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2011-09-23 17:01:19 -04:00
parent 36279ac10c
commit 38c2f4b12a
3 changed files with 54 additions and 65 deletions
Download patch file Download diff file Expand all files Collapse all files

4
fs/nfsd/state.h
View file

@ -35,6 +35,7 @@
#ifndef _NFSD4_STATE_H
#define _NFSD4_STATE_H
#include <linux/idr.h>
#include <linux/sunrpc/svc_xprt.h>
#include <linux/nfsd/nfsfh.h>
#include "nfsfh.h"
@ -231,6 +232,7 @@ struct nfs4_client {
struct list_head cl_idhash; /* hash by cl_clientid.id */
struct list_head cl_strhash; /* hash by cl_name */
struct list_head cl_openowners;
struct idr cl_stateids; /* stateid lookup */
struct list_head cl_delegations;
struct list_head cl_lru; /* tail queue */
struct xdr_netobj cl_name; /* id generated by client */
@ -508,7 +510,7 @@ extern void nfsd4_recdir_purge_old(void);
extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
extern void release_session_client(struct nfsd4_session *);
extern __be32 nfs4_validate_stateid(stateid_t *);
extern __be32 nfs4_validate_stateid(struct nfs4_client *, stateid_t *);
extern void nfsd4_purge_closed_stateid(struct nfs4_stateowner *);
#endif /* NFSD4_STATE_H */