lustre/include/linux/lustre_lite.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * lustre lite cluster file system
   5  *
   6  * This code is issued under the GNU General Public License.
   7  * See the file COPYING in this distribution
   8  *
   9  *
  10  *
  11
  12
  13
  14 #ifndef _LL_H
  15 #define _LL_H
  16
  17 #include <linux/fs.h>
  18 #include <linux/ext2_fs.h>
  19
  20 #include <linux/lustre_net.h>
  21 #include <linux/lustre_mds.h>
  22 #include <linux/lustre_ha.h>
  23 #include <linux/obdo.h>
  24
  25 extern kmem_cache_t *ll_file_data_slab;
  26 struct ll_file_data {
  27         __u64 fd_mdshandle;
  28         struct ptlrpc_request *fd_req;
  29         __u32 fd_flags;
  30 };
  31
  32 struct ll_inode_md {
  33         struct mds_body *body;
  34         struct obdo *obdo;
  35 };
  36
  37 #define LL_IOC_GETFLAGS                 _IOR ('f', 151, long)
  38 #define LL_IOC_SETFLAGS                 _IOW ('f', 152, long)
  39 #define LL_IOC_CLRFLAGS                 _IOW ('f', 153, long)
  40
  41 #define LL_FILE_IGNORE_LOCK             0x00000001
  42
  43 #define LL_INLINESZ      60
  44 struct ll_inode_info {
  45         int              lli_flags;
  46         struct obdo     *lli_obdo;
  47         char            *lli_symlink_name;
  48         char             lli_inline[LL_INLINESZ];
  49         struct lustre_handle lli_intent_lock_handle;
  50 };
  51
  52 #define LL_SUPER_MAGIC 0x0BD00BD0
  53
  54 #define LL_COMMITCBD_STOPPING  0x1
  55 #define LL_COMMITCBD_STOPPED   0x2
  56 #define LL_COMMITCBD_RUNNING   0x4
  57
  58 struct ll_sb_info {
  59         struct obd_conn           ll_mdc_conn;
  60         struct obd_conn           ll_osc_conn;
  61         ino_t                     ll_rootino; /* number of root inode */
  62
  63         wait_queue_head_t         ll_commitcbd_waitq;
  64         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  65         int                       ll_commitcbd_flags;
  66         struct task_struct       *ll_commitcbd_thread;
  67         time_t                    ll_commitcbd_waketime;
  68         time_t                    ll_commitcbd_timeout;
  69         spinlock_t                ll_commitcbd_lock;
  70 };
  71
  72
  73 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  74 {
  75         return (struct ll_sb_info *)(sb->u.generic_sbp);
  76 }
  77
  78 static inline struct obd_conn *ll_s2obdconn(struct super_block *sb)
  79 {
  80         return &(ll_s2sbi(sb))->ll_osc_conn;
  81 }
  82
  83 static inline struct mdc_obd *sbi2mdc(struct ll_sb_info *sbi)
  84 {
  85         struct obd_device *obd = sbi->ll_mdc_conn.oc_dev;
  86         return &obd->u.mdc;
  87 }
  88
  89 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  90 {
  91         return ll_s2sbi(inode->i_sb);
  92 }
  93
  94 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  95 {
  96         return (struct ll_inode_info *)&(inode->u.generic_ip);
  97 }
  98
  99 static inline int ll_has_inline(struct inode *inode)
 100 {
 101         return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
 102 }
 103
 104
 105 static inline struct obd_conn *ll_i2obdconn(struct inode *inode)
 106 {
 107         return ll_s2obdconn(inode->i_sb);
 108 }
 109
 110 static inline void ll_ino2fid(struct ll_fid *fid, ino_t ino, __u32 generation,
 111                               int type)
 112 {
 113         fid->id = (__u64)ino;
 114         fid->generation = generation;
 115         fid->f_type = type;
 116 }
 117
 118 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 119 {
 120         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 121                    inode->i_mode & S_IFMT);
 122 }
 123
 124 /* namei.c */
 125 int ll_lock(struct inode *dir, struct dentry *dentry,
 126             struct lookup_intent *it, struct lustre_handle *lockh);
 127 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 128
 129
 130
 131 /* dir.c */
 132 extern struct file_operations ll_dir_operations;
 133 extern struct inode_operations ll_dir_inode_operations;
 134
 135 /* file.c */
 136 extern struct file_operations ll_file_operations;
 137 extern struct inode_operations ll_file_inode_operations;
 138
 139 /* rw.c */
 140 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 141                            int create, int locked);
 142 void ll_truncate(struct inode *inode);
 143
 144 /* symlink.c */
 145 extern struct inode_operations ll_fast_symlink_inode_operations;
 146 extern struct inode_operations ll_symlink_inode_operations;
 147
 148 /* sysctl.c */
 149 void ll_sysctl_init(void);
 150 void ll_sysctl_clean(void);
 151
 152 #endif