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authorJ. Bruce Fields <bfields@redhat.com>2011-09-23 17:01:19 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-09-26 17:35:28 -0400
commit38c2f4b12a455cb3a108fd5c79a10df2ba3ec9a7 (patch)
tree125aa30a29a2863b448d66b2b0d31d4f65db0533 /fs/nfsd/state.h
parent36279ac10c3d69372af875f1affafd375db687a9 (diff)
downloadlinux-38c2f4b12a455cb3a108fd5c79a10df2ba3ec9a7.tar.gz
nfsd4: look up stateid's per clientid
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>
Diffstat (limited to 'fs/nfsd/state.h')
-rw-r--r--fs/nfsd/state.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 55a4d6a108a2..13f6f9f5ceec 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -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 */