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         struct lov_stripe_md *lli_smd;
  46         char                 *lli_symlink_name;
  47         struct lustre_handle  lli_intent_lock_handle;
  48         struct semaphore      lli_open_sem;
  49 };
  50
  51 #define LL_SUPER_MAGIC 0x0BD00BD0
  52
  53 #define LL_COMMITCBD_STOPPING  0x1
  54 #define LL_COMMITCBD_STOPPED   0x2
  55 #define LL_COMMITCBD_RUNNING   0x4
  56
  57 struct ll_sb_info {
  58         unsigned char             ll_sb_uuid[37];
  59         struct lustre_handle      ll_mdc_conn;
  60         struct lustre_handle      ll_osc_conn;
  61         obd_id                    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 lustre_handle *ll_s2obdconn(struct super_block *sb)
  79 {
  80         return &(ll_s2sbi(sb))->ll_osc_conn;
  81 }
  82
  83 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
  84 {
  85         struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
  86         if (obd == NULL)
  87                 LBUG();
  88         return &obd->u.cli;
  89 }
  90
  91 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  92 {
  93         return ll_s2sbi(inode->i_sb);
  94 }
  95
  96 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  97 {
  98         return (struct ll_inode_info *)&(inode->u.generic_ip);
  99 }
 100
 101 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
 102 {
 103         return ll_s2obdconn(inode->i_sb);
 104 }
 105
 106 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
 107                               int type)
 108 {
 109         fid->id = ino;
 110         fid->generation = generation;
 111         fid->f_type = type;
 112 }
 113
 114 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 115 {
 116         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 117                    inode->i_mode & S_IFMT);
 118 }
 119
 120 /* namei.c */
 121 int ll_lock(struct inode *dir, struct dentry *dentry,
 122             struct lookup_intent *it, struct lustre_handle *lockh);
 123 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 124
 125 /* dcache.c */
 126 void ll_intent_release(struct dentry *de);
 127
 128 /* dir.c */
 129 extern struct file_operations ll_dir_operations;
 130 extern struct inode_operations ll_dir_inode_operations;
 131
 132 /* file.c */
 133 extern struct file_operations ll_file_operations;
 134 extern struct inode_operations ll_file_inode_operations;
 135
 136 /* rw.c */
 137 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 138                            int create, int locked);
 139 void ll_truncate(struct inode *inode);
 140
 141 /* symlink.c */
 142 extern struct inode_operations ll_fast_symlink_inode_operations;
 143 extern struct inode_operations ll_symlink_inode_operations;
 144
 145 /* sysctl.c */
 146 void ll_sysctl_init(void);
 147 void ll_sysctl_clean(void);
 148
 149 #endif