#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
*/
/*
* 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,
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.
/* 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 */
};
/*
- * 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)
{
#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)
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)
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));
}
/**
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);
}
/*
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 *);
/* 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
*/