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         struct lustre_handle      ll_mdc_conn;
  59         struct lustre_handle      ll_osc_conn;
  60         obd_id                    ll_rootino; /* number of root inode */
  61
  62         wait_queue_head_t         ll_commitcbd_waitq;
  63         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  64         int                       ll_commitcbd_flags;
  65         struct task_struct       *ll_commitcbd_thread;
  66         time_t                    ll_commitcbd_waketime;
  67         time_t                    ll_commitcbd_timeout;
  68         spinlock_t                ll_commitcbd_lock;
  69 };
  70
  71
  72 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  73 {
  74         return (struct ll_sb_info *)(sb->u.generic_sbp);
  75 }
  76
  77 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
  78 {
  79         return &(ll_s2sbi(sb))->ll_osc_conn;
  80 }
  81
  82 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
  83 {
  84         struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
  85         if (obd == NULL)
  86                 LBUG();
  87         return &obd->u.cli;
  88 }
  89
  90 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  91 {
  92         return ll_s2sbi(inode->i_sb);
  93 }
  94
  95 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  96 {
  97         return (struct ll_inode_info *)&(inode->u.generic_ip);
  98 }
  99
 100 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
 101 {
 102         return ll_s2obdconn(inode->i_sb);
 103 }
 104
 105 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
 106                               int type)
 107 {
 108         fid->id = ino;
 109         fid->generation = generation;
 110         fid->f_type = type;
 111 }
 112
 113 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 114 {
 115         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 116                    inode->i_mode & S_IFMT);
 117 }
 118
 119 /* namei.c */
 120 int ll_lock(struct inode *dir, struct dentry *dentry,
 121             struct lookup_intent *it, struct lustre_handle *lockh);
 122 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 123
 124 /* dcache.c */
 125 void ll_intent_release(struct dentry *de);
 126
 127 /* dir.c */
 128 extern struct file_operations ll_dir_operations;
 129 extern struct inode_operations ll_dir_inode_operations;
 130
 131 /* file.c */
 132 extern struct file_operations ll_file_operations;
 133 extern struct inode_operations ll_file_inode_operations;
 134
 135 /* rw.c */
 136 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 137                            int create, int locked);
 138 void ll_truncate(struct inode *inode);
 139
 140 /* symlink.c */
 141 extern struct inode_operations ll_fast_symlink_inode_operations;
 142 extern struct inode_operations ll_symlink_inode_operations;
 143
 144 /* sysctl.c */
 145 void ll_sysctl_init(void);
 146 void ll_sysctl_clean(void);
 147
 148 #endif