1 /* object based disk file system
3 * This software is licensed under the GPL. See the file COPYING in the
4 * top directory of this distribution for details.
6 * Copyright (C), 1999, Stelias Computing Inc
14 #include <linux/obd_class.h>
15 #include <linux/list.h>
18 void obdfs_read_inode(struct inode *inode);
21 int flushd_init(void);
25 int obdfs_do_writepage(struct inode *, struct page *, int sync);
26 int obdfs_init_pgrqcache(void);
27 void obdfs_cleanup_pgrqcache(void);
28 int obdfs_readpage(struct dentry *dentry, struct page *page);
29 int obdfs_writepage(struct dentry *dentry, struct page *page);
30 struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
31 int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);
34 struct dentry *obdfs_lookup(struct inode * dir, struct dentry *dentry);
35 int obdfs_create (struct inode * dir, struct dentry * dentry, int mode);
36 int obdfs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
37 int obdfs_rmdir(struct inode *dir, struct dentry *dentry);
38 int obdfs_unlink(struct inode *dir, struct dentry *dentry);
39 int obdfs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev);
40 int obdfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname);
41 int obdfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry);
42 int obdfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry);
44 int obdfs_check_dir_entry (const char * function, struct inode * dir,
45 struct ext2_dir_entry_2 * de,
47 unsigned long offset);
49 int obdfs_readlink (struct dentry *, char *, int);
50 struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int);
53 /* list of all OBDFS super blocks */
54 struct list_head obdfs_super_list;
57 struct list_head rq_plist; /* linked list of req's */
58 unsigned long rq_jiffies;
59 struct page *rq_page; /* page to be written */
62 void obdfs_print_list(struct list_head *page_list) {
63 struct list_head *tmp;
65 while ( (tmp = tmp->next) != page_list) {
66 struct obdfs_pgrq *pgrq;
67 pgrq = list_entry(tmp, struct obdfs_pgrq, rq_plist);
68 CDEBUG(D_INODE, "page %p\n", pgrq->rq_page);
72 inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
73 int obdfs_do_vec_wr(struct super_block *sb, obd_count num_io, obd_count num_oa,
74 struct obdo **obdos, obd_count *oa_bufs,
75 struct page **pages, char **bufs, obd_size *counts,
76 obd_off *offsets, obd_flag *flags);
79 struct obdfs_sb_info {
80 struct list_head osi_list; /* list of supers */
81 struct obd_conn osi_conn;
82 struct super_block *osi_super;
83 struct obd_device *osi_obd;
84 struct obd_ops *osi_ops;
85 ino_t osi_rootino; /* which root inode */
86 int osi_minor; /* minor of /dev/obdX */
87 struct list_head osi_inodes; /* linked list of dirty inodes */
90 struct obdfs_inode_info {
92 struct list_head oi_inodes;
93 struct list_head oi_pages;
94 char oi_inline[OBD_INLINESZ];
97 static inline struct list_head *obdfs_iplist(struct inode *inode)
99 struct obdfs_inode_info *info = (struct obdfs_inode_info *)&inode->u.generic_ip;
101 return &info->oi_pages;
104 static inline struct list_head *obdfs_islist(struct inode *inode)
106 struct obdfs_inode_info *info = (struct obdfs_inode_info *)&inode->u.generic_ip;
108 return &info->oi_inodes;
111 static inline struct list_head *obdfs_slist(struct inode *inode) {
112 struct obdfs_sb_info *sbi = (struct obdfs_sb_info *)(&inode->i_sb->u.generic_sbp);
113 return &sbi->osi_inodes;
116 #define OBDFS_INFO(inode) ((struct obdfs_inode_info *)(&(inode)->u.generic_ip))
118 void obdfs_sysctl_init(void);
119 void obdfs_sysctl_clean(void);
121 extern struct file_operations obdfs_file_operations;
122 extern struct inode_operations obdfs_file_inode_operations;
123 extern struct inode_operations obdfs_dir_inode_operations;
124 extern struct inode_operations obdfs_symlink_inode_operations;
126 static inline int obdfs_has_inline(struct inode *inode)
128 return (OBDFS_INFO(inode)->oi_flags & OBD_FL_INLINEDATA);
131 static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
133 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
135 CDEBUG(D_INODE, "inode %ld (%p)\n", inode->i_ino, inode);
136 obdo_from_inode(oa, inode);
137 if (obdfs_has_inline(inode)) {
138 CDEBUG(D_INODE, "inode has inline data\n");
139 memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
140 oa->o_obdflags |= OBD_FL_INLINEDATA;
141 oa->o_valid |= OBD_MD_FLINLINE;
143 } /* obdfs_from_inode */
145 static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
147 struct obdfs_inode_info *oinfo = OBDFS_INFO(inode);
149 CDEBUG(D_INODE, "inode %ld (%p)\n", inode->i_ino, inode);
150 obdo_to_inode(inode, oa);
152 if (obdo_has_inline(oa)) {
153 CDEBUG(D_INODE, "obdo has inline data\n");
154 memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
155 oinfo->oi_flags |= OBD_FL_INLINEDATA;
157 } /* obdfs_to_inode */
163 #warning "*** WARNING redefining OPS"
165 #define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
166 #define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
170 #warning "*** WARNING redefining ID"
172 #define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
173 #define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
176 #define OBDFS_SUPER_MAGIC 0x4711