Pass inline data from filesystem through obdo to VFS.

[fs/lustre-release.git] / lustre / include / linux / obdfs.h

diff --git a/lustre/include/linux/obdfs.h b/lustre/include/linux/obdfs.h
index 3af1251..7ff6874 100644 (file)
--- a/lustre/include/linux/obdfs.h
+++ b/lustre/include/linux/obdfs.h
@@ -12,18 +12,22 @@
 #ifndef _OBDFS_H
 #define OBDFS_H
 #include <linux/obd_class.h>
+#include <linux/list.h>
 
 /* super.c */
 void obdfs_read_inode(struct inode *inode);
 
-
-/* file.c */
-ssize_t obdfs_file_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
+/* flush.c */
+int flushd_init(void);
 
 
 /* rw.c */
+int obdfs_do_writepage(struct inode *, struct page *, int sync);
+int obdfs_init_wreqcache(void);
+void obdfs_cleanup_wreqcache(void);
+int obdfs_readpage(struct dentry *dentry, struct page *page);
+int obdfs_writepage(struct dentry *dentry, struct page *page);
 struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
-int obdfs_writepage(struct file *file, struct page *page);
 int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);
 
 /* namei.c */
@@ -37,36 +41,82 @@ int obdfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
 int obdfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry);
 int obdfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry);
 /* dir.c */
-int obdfs_readdir(struct file * filp, void * dirent, filldir_t filldir);
 int obdfs_check_dir_entry (const char * function, struct inode * dir,
                          struct ext2_dir_entry_2 * de,
                          struct page * page,
                           unsigned long offset);
+/* symlink.c */
+int obdfs_readlink (struct dentry *, char *, int);
+struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int); 
+
+struct obdfs_super_entry {
+       struct list_head sl_chain;
+       struct obdfs_sb_info *sbi;
+};
+
+struct obdfs_wreq {
+       struct list_head         wb_list;       /* linked list of req's */
+       struct inode            *wb_inode;      /* dentry referenced */
+       struct page             *wb_page;       /* page to be written */
+};
 
 struct obdfs_sb_info {
-       struct obd_conn_info osi_conn_info;
+       struct obd_conn osi_conn;
        struct super_block *osi_super;
        struct obd_device *osi_obd;
-       struct obd_ops *osi_ops;
+       struct obd_ops *osi_ops;     
+       ino_t           osi_rootino; /* which root inode */
+       int             osi_minor;   /* minor of /dev/obdX */
+       struct list_head osi_list;  /* linked list of inodes to write */
+};
+
+struct obdfs_inode_info {
+       int              oi_flags;
+       struct list_head oi_list;
+       char            *oi_inline;
 };
 
+#define WB_NEXT(req)   ((struct obdfs_wreq *) ((req)->wb_list.next))
+/* XXX page list should go on each inode instead of supberblock */
+#define OBD_LIST(inode)        (((struct obdfs_sb_info *)(&(inode)->i_sb->u.generic_sbp))->osi_list)
+#define WREQ(entry)    (list_entry(entry, struct obdfs_wreq, wb_list))
+
 void obdfs_sysctl_init(void);
 void obdfs_sysctl_clean(void);
 
-struct obdfs_inode_info;
-
-extern struct file_operations obdfs_file_ops;
-extern struct inode_operations obdfs_inode_ops;
+extern struct file_operations obdfs_file_operations;
+extern struct inode_operations obdfs_file_inode_operations;
+extern struct inode_operations obdfs_dir_inode_operations;
+extern struct inode_operations obdfs_symlink_inode_operations;
 
 static inline struct obd_ops *iops(struct inode *i)
 {
-       struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) i->i_sb->u.generic_sbp;
+       struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
        return sbi->osi_ops;
 }
 
+static inline struct obd_conn *iid(struct inode *i)
+{
+       struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
+       return &sbi->osi_conn;
+}
+
 #define NOLOCK 0
 #define LOCKED 1
 
+#ifdef OPS
+#warning "*** WARNING redefining OPS"
+#else
+#define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
+#define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
+#endif
+
+#ifdef ID
+#warning "*** WARNING redefining ID"
+#else
+#define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
+#define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
+#endif
 
 #define OBDFS_SUPER_MAGIC 0x4711