4 * Copyright (C) 2001 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
10 struct obdfs_inode_info {
12 struct list_head oi_inodes;
13 struct list_head oi_pages;
14 char oi_inline[OBD_INLINESZ];
17 struct obdfs_sb_info {
18 struct list_head osi_list; /* list of supers */
19 struct obd_conn osi_conn;
20 struct super_block *osi_super;
21 struct obd_device *osi_obd;
22 struct obd_ops *osi_ops;
23 ino_t osi_rootino; /* number of root inode */
24 int osi_minor; /* minor of /dev/obdX */
25 struct list_head osi_inodes; /* list of dirty inodes */
26 unsigned long osi_cache_count;
27 struct semaphore osi_list_mutex;
31 static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
33 return (struct obdfs_inode_info *)&(inode->u.generic_ip);
36 static inline int obdfs_has_inline(struct inode *inode)
38 return (obdfs_i2info(inode)->oi_flags & OBD_FL_INLINEDATA);
41 static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
43 struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
45 CDEBUG(D_INFO, "src inode %ld, dst obdo %ld valid 0x%08x\n",
46 inode->i_ino, (long)oa->o_id, oa->o_valid);
47 obdo_from_inode(oa, inode);
48 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
49 CDEBUG(D_INODE, "copying device %x from inode to obdo\n",
51 *((obd_rdev *)oa->o_inline) = kdev_t_to_nr(inode->i_rdev);
52 oa->o_obdflags |= OBD_FL_INLINEDATA;
53 oa->o_valid |= OBD_MD_FLINLINE;
54 } else if (obdfs_has_inline(inode)) {
55 CDEBUG(D_INODE, "copying inline data from inode to obdo\n");
56 memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
57 oa->o_obdflags |= OBD_FL_INLINEDATA;
58 oa->o_valid |= OBD_MD_FLINLINE;
60 } /* obdfs_from_inode */
62 static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
64 struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
66 CDEBUG(D_INFO, "src obdo %ld valid 0x%08x, dst inode %ld\n",
67 (long)oa->o_id, oa->o_valid, inode->i_ino);
69 obdo_to_inode(inode, oa);
71 if (obdo_has_inline(oa)) {
72 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
73 S_ISFIFO(inode->i_mode)) {
74 obd_rdev rdev = *((obd_rdev *)oa->o_inline);
76 "copying device %x from obdo to inode\n", rdev);
77 init_special_inode(inode, inode->i_mode, rdev);
79 CDEBUG(D_INFO, "copying inline from obdo to inode\n");
80 memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
82 oinfo->oi_flags |= OBD_FL_INLINEDATA;
84 } /* obdfs_to_inode */
90 #warning "*** WARNING redefining OPS"
92 #define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
93 #define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
97 #warning "*** WARNING redefining ID"
99 #define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
100 #define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
103 #define OBDFS_SUPER_MAGIC 0x4711