Merge git://oak/home/sfr/kernels/iseries/work

[linux-2.6-omap-h63xx.git] / include / linux / nfs_fs.h

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 7d78a783c64a1bfbfb6aa60281ee651d2be53462..12787a9b02596d14a412eeeacb21d3bb39f29e43 100644 (file)
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -41,6 +41,10 @@
 #define NFS_MAX_FILE_IO_BUFFER_SIZE    32768
 #define NFS_DEF_FILE_IO_BUFFER_SIZE    4096
 
+/* Default timeout values */
+#define NFS_MAX_UDP_TIMEOUT    (60*HZ)
+#define NFS_MAX_TCP_TIMEOUT    (600*HZ)
+
 /*
  * superblock magic number for NFS
  */
@@ -112,7 +116,8 @@ struct nfs_inode {
        /*
         * Various flags
         */
-       unsigned int            flags;
+       unsigned long           flags;                  /* atomic bit ops */
+       unsigned long           cache_validity;         /* bit mask */
 
        /*
         * read_cache_jiffies is when we started read-caching this inode,
@@ -136,6 +141,7 @@ struct nfs_inode {
        unsigned long           attrtimeo_timestamp;
        __u64                   change_attr;            /* v4 only */
 
+       unsigned long           last_updated;
        /* "Generation counter" for the attribute cache. This is
         * bumped whenever we update the metadata on the
         * server.
@@ -174,8 +180,6 @@ struct nfs_inode {
        /* Open contexts for shared mmap writes */
        struct list_head        open_files;
 
-       wait_queue_head_t       nfs_i_wait;
-
 #ifdef CONFIG_NFS_V4
        struct nfs4_cached_acl  *nfs4_acl;
         /* NFSv4 state */
@@ -188,17 +192,21 @@ struct nfs_inode {
 };
 
 /*
- * Legal inode flag values
+ * Cache validity bit flags
+ */
+#define NFS_INO_INVALID_ATTR   0x0001          /* cached attrs are invalid */
+#define NFS_INO_INVALID_DATA   0x0002          /* cached data is invalid */
+#define NFS_INO_INVALID_ATIME  0x0004          /* cached atime is invalid */
+#define NFS_INO_INVALID_ACCESS 0x0008          /* cached access cred invalid */
+#define NFS_INO_INVALID_ACL    0x0010          /* cached acls are invalid */
+#define NFS_INO_REVAL_PAGECACHE        0x0020          /* must revalidate pagecache */
+
+/*
+ * Bit offsets in flags field
  */
-#define NFS_INO_STALE          0x0001          /* possible stale inode */
-#define NFS_INO_ADVISE_RDPLUS   0x0002          /* advise readdirplus */
-#define NFS_INO_REVALIDATING   0x0004          /* revalidating attrs */
-#define NFS_INO_INVALID_ATTR   0x0008          /* cached attrs are invalid */
-#define NFS_INO_INVALID_DATA   0x0010          /* cached data is invalid */
-#define NFS_INO_INVALID_ATIME  0x0020          /* cached atime is invalid */
-#define NFS_INO_INVALID_ACCESS 0x0040          /* cached access cred invalid */
-#define NFS_INO_INVALID_ACL    0x0080          /* cached acls are invalid */
-#define NFS_INO_REVAL_PAGECACHE        0x1000          /* must revalidate pagecache */
+#define NFS_INO_REVALIDATING   (0)             /* revalidating attrs */
+#define NFS_INO_ADVISE_RDPLUS  (1)             /* advise readdirplus */
+#define NFS_INO_STALE          (2)             /* possible stale inode */
 
 static inline struct nfs_inode *NFS_I(struct inode *inode)
 {
@@ -224,8 +232,7 @@ static inline struct nfs_inode *NFS_I(struct inode *inode)
 #define NFS_ATTRTIMEO_UPDATE(inode)    (NFS_I(inode)->attrtimeo_timestamp)
 
 #define NFS_FLAGS(inode)               (NFS_I(inode)->flags)
-#define NFS_REVALIDATING(inode)                (NFS_FLAGS(inode) & NFS_INO_REVALIDATING)
-#define NFS_STALE(inode)               (NFS_FLAGS(inode) & NFS_INO_STALE)
+#define NFS_STALE(inode)               (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode)))
 
 #define NFS_FILEID(inode)              (NFS_I(inode)->fileid)
 
@@ -234,10 +241,17 @@ static inline int nfs_caches_unstable(struct inode *inode)
        return atomic_read(&NFS_I(inode)->data_updates) != 0;
 }
 
+static inline void nfs_mark_for_revalidate(struct inode *inode)
+{
+       spin_lock(&inode->i_lock);
+       NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+       spin_unlock(&inode->i_lock);
+}
+
 static inline void NFS_CACHEINV(struct inode *inode)
 {
        if (!nfs_caches_unstable(inode))
-               NFS_FLAGS(inode) |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+               nfs_mark_for_revalidate(inode);
 }
 
 static inline int nfs_server_capable(struct inode *inode, int cap)
@@ -247,7 +261,7 @@ static inline int nfs_server_capable(struct inode *inode, int cap)
 
 static inline int NFS_USE_READDIRPLUS(struct inode *inode)
 {
-       return NFS_FLAGS(inode) & NFS_INO_ADVISE_RDPLUS;
+       return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
 }
 
 /**
@@ -271,7 +285,7 @@ static inline long nfs_save_change_attribute(struct inode *inode)
 static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr)
 {
        return !nfs_caches_unstable(inode)
-               && chattr == NFS_I(inode)->cache_change_attribute;
+               && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute);
 }
 
 /*
@@ -281,6 +295,7 @@ extern void nfs_zap_caches(struct inode *);
 extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
                                struct nfs_fattr *);
 extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *);
+extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr);
 extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int nfs_permission(struct inode *, int, struct nameidata *);
 extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *);
@@ -301,12 +316,18 @@ extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, st
 extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
 extern void put_nfs_open_context(struct nfs_open_context *ctx);
 extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx);
-extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, int mode);
+extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode);
 extern void nfs_file_clear_open_context(struct file *filp);
 
 /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
 extern u32 root_nfs_parse_addr(char *name); /*__init*/
 
+static inline void nfs_fattr_init(struct nfs_fattr *fattr)
+{
+       fattr->valid = 0;
+       fattr->time_start = jiffies;
+}
+
 /*
  * linux/fs/nfs/file.c
  */