lustre/include/linux/lustre_lite.h

   1 /* object based disk file system
   2  *
   3  * This code is issued under the GNU General Public License.
   4  * See the file COPYING in this distribution
   5  *
   6  *
   7  *
   8  *
   9
  10
  11
  12 #ifndef _LL_H
  13 #define _LL_H
  14
  15 #include <linux/ext2_fs.h>
  16
  17 #include <linux/lustre_net.h>
  18 #include <linux/lustre_mds.h>
  19 #include <linux/obdo.h>
  20
  21 #define LUSTRE_LITE_NAME "llite"
  22
  23 extern kmem_cache_t *ll_file_data_slab;
  24 struct ll_file_data {
  25         __u64 fd_mdshandle;
  26 };
  27
  28 #define LL_INLINESZ      60
  29 struct ll_inode_info {
  30         int              lli_flags;
  31         __u64            lli_objid;
  32         char             lli_inline[LL_INLINESZ];
  33 };
  34
  35 #define LL_SUPER_MAGIC 0x0BD00BD0;
  36 struct ll_sb_info {
  37         struct list_head         ll_list;      /* list of supers */
  38         struct obd_conn          ll_conn;
  39         struct super_block      *ll_super;
  40         ino_t                    ll_rootino;   /* number of root inode */
  41         int                      ll_minor;     /* minor of /dev/obdX */
  42         struct list_head         ll_inodes;    /* list of dirty inodes */
  43         unsigned long            ll_cache_count;
  44         struct semaphore         ll_list_mutex;
  45         struct ptlrpc_client     ll_mds_client;
  46         struct lustre_peer       ll_mds_peer;
  47         struct ptlrpc_client     ll_ost_client;
  48         struct lustre_peer       ll_ost_peer;
  49 };
  50
  51
  52 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  53 {
  54         return (struct ll_sb_info *) (inode->i_sb->u.generic_sbp);
  55 }
  56
  57 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  58 {
  59         return (struct ll_inode_info *)&(inode->u.generic_ip);
  60 }
  61
  62 static inline int ll_has_inline(struct inode *inode)
  63 {
  64         return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
  65 }
  66
  67
  68 static inline struct obd_conn *ll_i2obdconn(struct inode *inode)
  69 {
  70         return &(ll_i2sbi(inode))->ll_conn;
  71 }
  72
  73 /* dir.c */
  74 extern struct file_operations ll_dir_operations;
  75 extern struct inode_operations ll_dir_inode_operations;
  76
  77 /* file.c */
  78 extern struct file_operations ll_file_operations;
  79 extern struct inode_operations ll_file_inode_operations;
  80
  81 /* rw.c */
  82 struct page *ll_getpage(struct inode *inode, unsigned long offset,
  83                            int create, int locked);
  84 void ll_truncate(struct inode *inode);
  85
  86 /* symlink.c */
  87 extern struct inode_operations ll_fast_symlink_inode_operations;
  88 extern struct inode_operations ll_symlink_inode_operations;
  89
  90 /* sysctl.c */
  91 void ll_sysctl_init(void);
  92 void ll_sysctl_clean(void);
  93
  94
  95
  96 static inline struct list_head *ll_slist(struct inode *inode)
  97 {
  98         struct ll_sb_info *sbi = ll_i2sbi(inode);
  99
 100         return &sbi->ll_inodes;
 101 }
 102
 103 #endif
 104