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 };
  30
  31 #define LL_INLINESZ      60
  32 struct ll_inode_info {
  33         int              lli_flags;
  34         __u64            lli_objid;
  35         char             lli_inline[LL_INLINESZ];
  36 };
  37
  38 #define LL_SUPER_MAGIC 0x0BD00BD0;
  39
  40 #define LL_COMMITCBD_STOPPING  0x1
  41 #define LL_COMMITCBD_STOPPED   0x2
  42 #define LL_COMMITCBD_RUNNING   0x4
  43
  44 struct ll_sb_info {
  45         struct obd_conn           ll_conn;
  46         ino_t                     ll_rootino; /* number of root inode */
  47         struct ptlrpc_client      ll_mds_client;
  48         struct ptlrpc_connection *ll_mds_conn;
  49         struct ptlrpc_client      ll_ost_client;
  50         struct ptlrpc_connection *ll_ost_conn;
  51
  52         wait_queue_head_t         ll_commitcbd_waitq;
  53         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  54         int                       ll_commitcbd_flags;
  55         struct task_struct        *ll_commitcbd_thread;
  56         time_t                    ll_commitcbd_waketime;
  57         time_t                    ll_commitcbd_timeout;
  58         spinlock_t                ll_commitcbd_lock;
  59 };
  60
  61
  62 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  63 {
  64         return (struct ll_sb_info *)(sb->u.generic_sbp);
  65 }
  66
  67 static inline struct obd_conn *ll_s2obdconn(struct super_block *sb)
  68 {
  69         return &(ll_s2sbi(sb))->ll_conn;
  70 }
  71
  72 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  73 {
  74         return ll_s2sbi(inode->i_sb);
  75 }
  76
  77 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  78 {
  79         return (struct ll_inode_info *)&(inode->u.generic_ip);
  80 }
  81
  82 static inline int ll_has_inline(struct inode *inode)
  83 {
  84         return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
  85 }
  86
  87
  88 static inline struct obd_conn *ll_i2obdconn(struct inode *inode)
  89 {
  90         return ll_s2obdconn(inode->i_sb);
  91 }
  92
  93 static inline void ll_ino2fid(struct ll_fid *fid, ino_t ino, __u32 generation,
  94                               int type)
  95 {
  96         fid->id = (__u64)ino;
  97         fid->generation = generation;
  98         fid->f_type = type;
  99 }
 100
 101 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 102 {
 103         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 104                    inode->i_mode & S_IFMT);
 105 }
 106
 107 /* dir.c */
 108 extern struct file_operations ll_dir_operations;
 109 extern struct inode_operations ll_dir_inode_operations;
 110
 111 /* file.c */
 112 extern struct file_operations ll_file_operations;
 113 extern struct inode_operations ll_file_inode_operations;
 114
 115 /* rw.c */
 116 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 117                            int create, int locked);
 118 void ll_truncate(struct inode *inode);
 119
 120 /* symlink.c */
 121 extern struct inode_operations ll_fast_symlink_inode_operations;
 122 extern struct inode_operations ll_symlink_inode_operations;
 123
 124 /* sysctl.c */
 125 void ll_sysctl_init(void);
 126 void ll_sysctl_clean(void);
 127
 128 #endif