Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...

[pandora-kernel.git] / fs / nfs / nfs4_fs.h

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index cf3a17e..bd1b9d6 100644 (file)
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -70,19 +70,26 @@ static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status
                seqid->flags |= NFS_SEQID_CONFIRMED;
 }
 
+struct nfs_unique_id {
+       struct rb_node rb_node;
+       __u64 id;
+};
+
 /*
  * NFS4 state_owners and lock_owners are simply labels for ordered
  * sequences of RPC calls. Their sole purpose is to provide once-only
  * semantics by allowing the server to identify replayed requests.
  */
 struct nfs4_state_owner {
-       spinlock_t           so_lock;
-       struct list_head     so_list;    /* per-clientid list of state_owners */
+       struct nfs_unique_id so_owner_id;
        struct nfs_client    *so_client;
-       u32                  so_id;      /* 32-bit identifier, unique */
-       atomic_t             so_count;
+       struct nfs_server    *so_server;
+       struct rb_node       so_client_node;
 
        struct rpc_cred      *so_cred;   /* Associated cred */
+
+       spinlock_t           so_lock;
+       atomic_t             so_count;
        struct list_head     so_states;
        struct list_head     so_delegations;
        struct nfs_seqid_counter so_seqid;
@@ -108,7 +115,8 @@ struct nfs4_lock_state {
 #define NFS_LOCK_INITIALIZED 1
        int                     ls_flags;
        struct nfs_seqid_counter        ls_seqid;
-       u32                     ls_id;
+       struct rpc_sequence     ls_sequence;
+       struct nfs_unique_id    ls_id;
        nfs4_stateid            ls_stateid;
        atomic_t                ls_count;
 };
@@ -116,7 +124,10 @@ struct nfs4_lock_state {
 /* bits for nfs4_state->flags */
 enum {
        LK_STATE_IN_USE,
-       NFS_DELEGATED_STATE,
+       NFS_DELEGATED_STATE,            /* Current stateid is delegation */
+       NFS_O_RDONLY_STATE,             /* OPEN stateid has read-only state */
+       NFS_O_WRONLY_STATE,             /* OPEN stateid has write-only state */
+       NFS_O_RDWR_STATE,               /* OPEN stateid has read/write state */
 };
 
 struct nfs4_state {
@@ -130,11 +141,14 @@ struct nfs4_state {
        unsigned long flags;            /* Do we hold any locks? */
        spinlock_t state_lock;          /* Protects the lock_states list */
 
-       nfs4_stateid stateid;
+       seqlock_t seqlock;              /* Protects the stateid/open_stateid */
+       nfs4_stateid stateid;           /* Current stateid: may be delegation */
+       nfs4_stateid open_stateid;      /* OPEN stateid */
 
-       unsigned int n_rdonly;
-       unsigned int n_wronly;
-       unsigned int n_rdwr;
+       /* The following 3 fields are protected by owner->so_lock */
+       unsigned int n_rdonly;          /* Number of read-only references */
+       unsigned int n_wronly;          /* Number of write-only references */
+       unsigned int n_rdwr;            /* Number of read/write references */
        int state;                      /* State on the server (R,W, or RW) */
        atomic_t count;
 };
@@ -165,11 +179,11 @@ extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struc
 extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *);
 extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
 extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
-extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state);
+extern int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait);
 extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
 extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
 extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
-extern int nfs4_proc_fs_locations(struct inode *dir, struct qstr *name,
+extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
                struct nfs4_fs_locations *fs_locations, struct page *page);
 
 extern struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops;
@@ -189,14 +203,14 @@ extern void nfs4_renew_state(struct work_struct *);
 
 /* nfs4state.c */
 struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp);
-extern u32 nfs4_alloc_lockowner_id(struct nfs_client *);
 
 extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
 extern void nfs4_put_state_owner(struct nfs4_state_owner *);
 extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
 extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
 extern void nfs4_put_open_state(struct nfs4_state *);
-extern void nfs4_close_state(struct nfs4_state *, mode_t);
+extern void nfs4_close_state(struct path *, struct nfs4_state *, mode_t);
+extern void nfs4_close_sync(struct path *, struct nfs4_state *, mode_t);
 extern void nfs4_state_set_mode_locked(struct nfs4_state *, mode_t);
 extern void nfs4_schedule_state_recovery(struct nfs_client *);
 extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
@@ -222,7 +236,8 @@ extern struct svc_version nfs4_callback_version1;
 
 #else
 
-#define nfs4_close_state(a, b) do { } while (0)
+#define nfs4_close_state(a, b, c) do { } while (0)
+#define nfs4_close_sync(a, b, c) do { } while (0)
 
 #endif /* CONFIG_NFS_V4 */
 #endif /* __LINUX_FS_NFS_NFS4_FS.H */