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  * Copyright (C) 2002 Cluster File Systems, Inc. <info@clusterfs.com>
  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
  33 struct ll_read_inode2_cookie {
  34         struct mds_body *lic_body;
  35         struct lov_mds_md *lic_lmm;
  36 };
  37
  38 #define LL_IOC_GETFLAGS                 _IOR ('f', 151, long)
  39 #define LL_IOC_SETFLAGS                 _IOW ('f', 152, long)
  40 #define LL_IOC_CLRFLAGS                 _IOW ('f', 153, long)
  41
  42 #define LL_FILE_IGNORE_LOCK             0x00000001
  43
  44 #define LL_INLINESZ      60
  45 struct ll_inode_info {
  46         struct lov_stripe_md *lli_smd;
  47         char                 *lli_symlink_name;
  48         struct lustre_handle  lli_intent_lock_handle;
  49         struct semaphore      lli_open_sem;
  50 };
  51
  52 #define LL_SUPER_MAGIC 0x0BD00BD0
  53
  54 #define LL_COMMITCBD_STOPPING  0x1
  55 #define LL_COMMITCBD_STOPPED   0x2
  56 #define LL_COMMITCBD_RUNNING   0x4
  57
  58 #define LL_SBI_NOLCK   0x1
  59
  60 struct ll_sb_info {
  61         obd_uuid_t                ll_sb_uuid;
  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         int                       ll_flags;
  67         wait_queue_head_t         ll_commitcbd_waitq;
  68         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  69         int                       ll_commitcbd_flags;
  70         struct task_struct       *ll_commitcbd_thread;
  71         time_t                    ll_commitcbd_waketime;
  72         time_t                    ll_commitcbd_timeout;
  73         spinlock_t                ll_commitcbd_lock;
  74 };
  75
  76
  77 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  78 {
  79         return (struct ll_sb_info *)(sb->u.generic_sbp);
  80 }
  81
  82 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
  83 {
  84         return &(ll_s2sbi(sb))->ll_osc_conn;
  85 }
  86
  87 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
  88 {
  89         struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
  90         if (obd == NULL)
  91                 LBUG();
  92         return &obd->u.cli;
  93 }
  94
  95 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  96 {
  97         return ll_s2sbi(inode->i_sb);
  98 }
  99
 100 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
 101 {
 102         return (struct ll_inode_info *)&(inode->u.generic_ip);
 103 }
 104
 105 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
 106 {
 107         return ll_s2obdconn(inode->i_sb);
 108 }
 109
 110 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
 111                               int type)
 112 {
 113         fid->id = ino;
 114         fid->generation = generation;
 115         fid->f_type = type;
 116 }
 117
 118 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 119 {
 120         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 121                    inode->i_mode & S_IFMT);
 122 }
 123
 124 static inline int ll_mds_easize(struct super_block *sb)
 125 {
 126         return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
 127 }
 128
 129 static inline int ll_ost_easize(struct super_block *sb)
 130 {
 131         return sbi2mdc(ll_s2sbi(sb))->cl_max_ost_easize;
 132 }
 133
 134 /* namei.c */
 135 int ll_lock(struct inode *dir, struct dentry *dentry,
 136             struct lookup_intent *it, struct lustre_handle *lockh);
 137 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 138
 139 /* dcache.c */
 140 void ll_intent_release(struct dentry *de);
 141
 142 /* dir.c */
 143 extern struct file_operations ll_dir_operations;
 144 extern struct inode_operations ll_dir_inode_operations;
 145
 146 /* file.c */
 147 extern struct file_operations ll_file_operations;
 148 extern struct inode_operations ll_file_inode_operations;
 149 struct ldlm_lock;
 150 int ll_lock_callback(struct ldlm_lock *, struct ldlm_lock_desc *, void *data,
 151                      __u32 data_len, int flag);
 152 int ll_size_lock(struct inode *, struct lov_stripe_md *, __u64 start, int mode,
 153                  struct lustre_handle **);
 154 int ll_size_unlock(struct inode *, struct lov_stripe_md *, int mode,
 155                    struct lustre_handle *);
 156 int ll_file_size(struct inode *inode, struct lov_stripe_md *md);
 157
 158 /* rw.c */
 159 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 160                         int create, int locked);
 161 void ll_truncate(struct inode *inode);
 162
 163 /* super.c */
 164 void ll_update_inode(struct inode *, struct mds_body *);
 165
 166 /* symlink.c */
 167 extern struct inode_operations ll_fast_symlink_inode_operations;
 168 extern struct inode_operations ll_symlink_inode_operations;
 169
 170 /* sysctl.c */
 171 void ll_sysctl_init(void);
 172 void ll_sysctl_clean(void);
 173
 174 #endif