1 /* object based disk file system
3 * This code is issued under the GNU General Public License.
4 * See the file COPYING in this distribution
6 * Copyright (C), 1999, Stelias Computing Inc
14 #include <linux/obd_class.h>
15 #include <linux/obdo.h>
16 #include <linux/list.h>
17 #include <linux/lustre_net.h>
19 #define LL_SUPER_MAGIC 0x0BD00BD0;
21 #define LL_INLINESZ 60
22 struct ll_inode_info {
25 char lli_inline[LL_INLINESZ];
29 struct list_head ll_list; /* list of supers */
30 struct obd_conn ll_conn;
31 struct super_block *ll_super;
32 // struct obd_device *ll_obd;
33 //struct obd_ops *ll_ops;
34 ino_t ll_rootino; /* number of root inode */
35 int ll_minor; /* minor of /dev/obdX */
36 struct list_head ll_inodes; /* list of dirty inodes */
37 unsigned long ll_cache_count;
38 struct semaphore ll_list_mutex;
39 struct lustre_peer ll_peer;
40 struct lustre_peer *ll_peer_ptr;
44 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
46 return (struct ll_inode_info *)&(inode->u.generic_ip);
49 static inline int ll_has_inline(struct inode *inode)
51 return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
62 struct list_head rq_plist; /* linked list of req's */
63 unsigned long rq_jiffies;
64 struct page *rq_page; /* page to be written */
67 extern struct list_head ll_super_list; /* list of all LL superblocks */
72 #define EXT2_DIR_PAD 4
73 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
74 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
76 #define EXT2_NAME_LEN 255
78 int ll_check_dir_entry (const char * function, struct inode * dir,
79 struct ext2_dir_entry_2 * de, struct page * page,
80 unsigned long offset);
81 extern struct file_operations ll_dir_operations;
82 extern struct inode_operations ll_dir_inode_operations;
85 extern struct file_operations ll_file_operations;
86 extern struct inode_operations ll_file_inode_operations;
89 void ll_dequeue_pages(struct inode *inode);
90 int ll_flushd_init(void);
91 int ll_flushd_cleanup(void);
92 int ll_flush_reqs(struct list_head *inode_list, unsigned long check_time);
93 int ll_flush_dirty_pages(unsigned long check_time);
97 * Structure of the super block
101 #define EXT2_SB(sb) (&((sb)->u.ext2_sb))
103 * Maximal count of links to a file
105 #define EXT2_LINK_MAX 32000
107 * Ext2 directory file types. Only the low 3 bits are used. The
108 * other bits are reserved for now.
110 #define EXT2_FT_UNKNOWN 0
111 #define EXT2_FT_REG_FILE 1
112 #define EXT2_FT_DIR 2
113 #define EXT2_FT_CHRDEV 3
114 #define EXT2_FT_BLKDEV 4
115 #define EXT2_FT_FIFO 5
116 #define EXT2_FT_SOCK 6
117 #define EXT2_FT_SYMLINK 7
119 #define EXT2_FT_MAX 8
121 #define EXT2_BTREE_FL 0x00001000 /* btree format dir */
122 #define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
123 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
124 #define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
125 ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
126 #define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
127 ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
130 int ll_do_writepage(struct page *, int sync);
131 int ll_init_pgrqcache(void);
132 void ll_cleanup_pgrqcache(void);
133 inline void ll_pgrq_del(struct ll_pgrq *pgrq);
134 int ll_readpage(struct file *file, struct page *page);
135 int ll_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to);
136 int ll_commit_write(struct file *file, struct page *page, unsigned from, unsigned to);
137 int ll_writepage(struct page *page);
138 struct page *ll_getpage(struct inode *inode, unsigned long offset,
139 int create, int locked);
140 int ll_write_one_page(struct file *file, struct page *page,
141 unsigned long offset, unsigned long bytes,
143 int ll_do_vec_wr(struct inode **inodes, obd_count num_io, obd_count num_oa,
144 struct obdo **obdos, obd_count *oa_bufs,
145 struct page **pages, char **bufs, obd_size *counts,
146 obd_off *offsets, obd_flag *flags);
147 void ll_truncate(struct inode *inode);
150 extern long ll_cache_count;
151 extern long ll_mutex_start;
154 extern struct inode_operations ll_fast_symlink_inode_operations;
155 extern struct inode_operations ll_symlink_inode_operations;
158 void ll_sysctl_init(void);
159 void ll_sysctl_clean(void);
161 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
163 return (struct ll_sb_info *) &(inode->i_sb->u.generic_sbp);
167 static inline struct list_head *ll_slist(struct inode *inode)
169 struct ll_sb_info *sbi = ll_i2sbi(inode);
171 return &sbi->ll_inodes;