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/obd_class.h>
  21 #include <linux/lustre_net.h>
  22 #include <linux/lustre_mds.h>
  23 #include <linux/lustre_ha.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 lov_stripe_md *md;
  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         struct  lov_stripe_md *lli_smd;
  48         //        int              lli_obdo_mdsz;
  49         //void            *lli_obdo_md;
  50         char            *lli_symlink_name;
  51         char             lli_inline[LL_INLINESZ];
  52         struct lustre_handle lli_intent_lock_handle;
  53 };
  54
  55 #define LL_SUPER_MAGIC 0x0BD00BD0
  56
  57 #define LL_COMMITCBD_STOPPING  0x1
  58 #define LL_COMMITCBD_STOPPED   0x2
  59 #define LL_COMMITCBD_RUNNING   0x4
  60
  61 struct ll_sb_info {
  62         struct lustre_handle      ll_mdc_conn;
  63         struct lustre_handle      ll_osc_conn;
  64         obd_id                    ll_rootino; /* number of root inode */
  65
  66         wait_queue_head_t         ll_commitcbd_waitq;
  67         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  68         int                       ll_commitcbd_flags;
  69         struct task_struct       *ll_commitcbd_thread;
  70         time_t                    ll_commitcbd_waketime;
  71         time_t                    ll_commitcbd_timeout;
  72         spinlock_t                ll_commitcbd_lock;
  73 };
  74
  75
  76 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  77 {
  78         return (struct ll_sb_info *)(sb->u.generic_sbp);
  79 }
  80
  81 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
  82 {
  83         return &(ll_s2sbi(sb))->ll_osc_conn;
  84 }
  85
  86 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
  87 {
  88         struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
  89         if (obd == NULL)
  90                 LBUG();
  91         return &obd->u.cli;
  92 }
  93
  94 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  95 {
  96         return ll_s2sbi(inode->i_sb);
  97 }
  98
  99 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
 100 {
 101         return (struct ll_inode_info *)&(inode->u.generic_ip);
 102 }
 103
 104 static inline int ll_has_inline(struct inode *inode)
 105 {
 106         return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
 107 }
 108
 109
 110 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
 111 {
 112         return ll_s2obdconn(inode->i_sb);
 113 }
 114
 115 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
 116                               int type)
 117 {
 118         fid->id = ino;
 119         fid->generation = generation;
 120         fid->f_type = type;
 121 }
 122
 123 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 124 {
 125         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 126                    inode->i_mode & S_IFMT);
 127 }
 128
 129 /* namei.c */
 130 int ll_lock(struct inode *dir, struct dentry *dentry,
 131             struct lookup_intent *it, struct lustre_handle *lockh);
 132 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 133
 134 /* dcache.c */
 135 void ll_intent_release(struct dentry *de);
 136
 137 /* dir.c */
 138 extern struct file_operations ll_dir_operations;
 139 extern struct inode_operations ll_dir_inode_operations;
 140
 141 /* file.c */
 142 extern struct file_operations ll_file_operations;
 143 extern struct inode_operations ll_file_inode_operations;
 144
 145 /* rw.c */
 146 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 147                            int create, int locked);
 148 void ll_truncate(struct inode *inode);
 149
 150 /* symlink.c */
 151 extern struct inode_operations ll_fast_symlink_inode_operations;
 152 extern struct inode_operations ll_symlink_inode_operations;
 153
 154 /* sysctl.c */
 155 void ll_sysctl_init(void);
 156 void ll_sysctl_clean(void);
 157
 158 #endif