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 #define LL_IOC_GETFLAGS                 _IOR ('f', 151, long)
  33 #define LL_IOC_SETFLAGS                 _IOW ('f', 152, long)
  34 #define LL_IOC_CLRFLAGS                 _IOW ('f', 153, long)
  35
  36 #define LL_FILE_IGNORE_LOCK             0x00000001
  37
  38 #define LL_INLINESZ      60
  39 struct ll_inode_info {
  40         int              lli_flags;
  41         __u64            lli_objid;
  42         char             lli_inline[LL_INLINESZ];
  43 };
  44
  45 #define LL_SUPER_MAGIC 0x0BD00BD0
  46
  47 #define LL_COMMITCBD_STOPPING  0x1
  48 #define LL_COMMITCBD_STOPPED   0x2
  49 #define LL_COMMITCBD_RUNNING   0x4
  50
  51 struct ll_sb_info {
  52         struct obd_conn           ll_conn;
  53         ino_t                     ll_rootino; /* number of root inode */
  54         struct ptlrpc_client      ll_mds_client;
  55         struct ptlrpc_connection *ll_mds_conn;
  56         struct ldlm_namespace    *ll_namespace;
  57
  58         wait_queue_head_t         ll_commitcbd_waitq;
  59         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  60         int                       ll_commitcbd_flags;
  61         struct task_struct        *ll_commitcbd_thread;
  62         time_t                    ll_commitcbd_waketime;
  63         time_t                    ll_commitcbd_timeout;
  64         spinlock_t                ll_commitcbd_lock;
  65 };
  66
  67
  68 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  69 {
  70         return (struct ll_sb_info *)(sb->u.generic_sbp);
  71 }
  72
  73 static inline struct obd_conn *ll_s2obdconn(struct super_block *sb)
  74 {
  75         return &(ll_s2sbi(sb))->ll_conn;
  76 }
  77
  78 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  79 {
  80         return ll_s2sbi(inode->i_sb);
  81 }
  82
  83 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  84 {
  85         return (struct ll_inode_info *)&(inode->u.generic_ip);
  86 }
  87
  88 static inline int ll_has_inline(struct inode *inode)
  89 {
  90         return (ll_i2info(inode)->lli_flags & OBD_FL_INLINEDATA);
  91 }
  92
  93
  94 static inline struct obd_conn *ll_i2obdconn(struct inode *inode)
  95 {
  96         return ll_s2obdconn(inode->i_sb);
  97 }
  98
  99 static inline void ll_ino2fid(struct ll_fid *fid, ino_t ino, __u32 generation,
 100                               int type)
 101 {
 102         fid->id = (__u64)ino;
 103         fid->generation = generation;
 104         fid->f_type = type;
 105 }
 106
 107 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 108 {
 109         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 110                    inode->i_mode & S_IFMT);
 111 }
 112
 113 /* dir.c */
 114 extern struct file_operations ll_dir_operations;
 115 extern struct inode_operations ll_dir_inode_operations;
 116
 117 /* file.c */
 118 extern struct file_operations ll_file_operations;
 119 extern struct inode_operations ll_file_inode_operations;
 120
 121 /* rw.c */
 122 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 123                            int create, int locked);
 124 void ll_truncate(struct inode *inode);
 125
 126 /* symlink.c */
 127 extern struct inode_operations ll_fast_symlink_inode_operations;
 128 extern struct inode_operations ll_symlink_inode_operations;
 129
 130 /* sysctl.c */
 131 void ll_sysctl_init(void);
 132 void ll_sysctl_clean(void);
 133
 134 #endif