1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * lustre lite cluster file system
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
9 * Copyright (C) 2002 Cluster File Systems, Inc. <info@clusterfs.com>
20 #include <linux/ext2_fs.h>
21 #include <linux/proc_fs.h>
23 #include <linux/obd_class.h>
24 #include <linux/lustre_net.h>
25 #include <linux/lustre_mds.h>
26 #include <linux/lustre_ha.h>
28 extern kmem_cache_t *ll_file_data_slab;
30 struct lustre_handle fd_mdshandle;
31 struct lustre_handle fd_osthandle;
32 struct ptlrpc_request *fd_req;
36 struct lustre_intent_data {
37 __u64 it_lock_handle[2];
43 struct ll_dentry_data {
44 struct semaphore lld_it_sem;
47 #define ll_d2d(dentry) ((struct ll_dentry_data*) dentry->d_fsdata)
49 struct ll_read_inode2_cookie {
50 struct mds_body *lic_body;
51 struct lov_mds_md *lic_lmm;
54 #define LL_INLINESZ 60
55 struct ll_inode_info {
56 struct lov_stripe_md *lli_smd;
57 char *lli_symlink_name;
58 struct semaphore lli_open_sem;
59 atomic_t lli_open_count; /* see ll_file_release */
60 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
61 struct inode lli_vfs_inode;
67 #define LL_SUPER_MAGIC 0x0BD00BD0
69 #define LL_COMMITCBD_STOPPING 0x1
70 #define LL_COMMITCBD_STOPPED 0x2
71 #define LL_COMMITCBD_RUNNING 0x4
73 #define LL_SBI_NOLCK 0x1
76 obd_uuid_t ll_sb_uuid;
77 struct lustre_handle ll_mdc_conn;
78 struct lustre_handle ll_osc_conn;
79 struct proc_dir_entry* ll_proc_root;
80 obd_id ll_rootino; /* number of root inode */
83 wait_queue_head_t ll_commitcbd_waitq;
84 wait_queue_head_t ll_commitcbd_ctl_waitq;
85 int ll_commitcbd_flags;
86 struct task_struct *ll_commitcbd_thread;
87 time_t ll_commitcbd_waketime;
88 time_t ll_commitcbd_timeout;
89 spinlock_t ll_commitcbd_lock;
90 struct list_head ll_conn_chain; /* per-conn chain of SBs */
92 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
95 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
97 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
98 return (struct ll_sb_info *)(sb->s_fs_info);
100 return (struct ll_sb_info *)(sb->u.generic_sbp);
104 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
106 return &(ll_s2sbi(sb))->ll_osc_conn;
109 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
111 struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
117 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
118 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
120 return ll_s2sbi(inode->i_sb);
124 // FIXME: replace the name of this with LL_I to conform to kernel stuff
125 // static inline struct ll_inode_info *LL_I(struct inode *inode)
126 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
128 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
129 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
131 return (struct ll_inode_info *)&(inode->u.generic_ip);
135 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
137 return ll_s2obdconn(inode->i_sb);
140 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
144 fid->generation = generation;
148 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
150 ll_ino2fid(fid, inode->i_ino, inode->i_generation,
151 inode->i_mode & S_IFMT);
154 static inline int ll_mds_max_easize(struct super_block *sb)
156 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
160 int ll_lock(struct inode *dir, struct dentry *dentry,
161 struct lookup_intent *it, struct lustre_handle *lockh);
162 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
164 typedef int (*intent_finish_cb)(int flag, struct ptlrpc_request *,
165 struct dentry **, struct lookup_intent *,
166 int offset, obd_id ino);
167 int ll_intent_lock(struct inode *parent, struct dentry **,
168 struct lookup_intent *, intent_finish_cb);
171 void ll_intent_release(struct dentry *, struct lookup_intent *);
172 int ll_set_dd(struct dentry *de);
176 I originally implmented these as functions, then realized a macro
177 would be more helpful for debugging, so the CDEBUG messages show
178 the current calling function. The orignal functions are in llite/dcache.c
180 int ll_save_intent(struct dentry * de, struct lookup_intent * it);
181 struct lookup_intent * ll_get_intent(struct dentry * de);
184 #define IT_RELEASED_MAGIC 0xDEADCAFE
186 #define LL_SAVE_INTENT(de, it) \
188 LASSERT(ll_d2d(de) != NULL); \
190 down(&ll_d2d(de)->lld_it_sem); \
191 LASSERT(de->d_it == NULL); \
193 CDEBUG(D_DENTRY, "D_IT DOWN dentry %p fsdata %p intent: %s sem %d\n", \
194 de, ll_d2d(de), ldlm_it2str(de->d_it->it_op), \
195 atomic_read(&(ll_d2d(de)->lld_it_sem.count))); \
198 #define LL_GET_INTENT(de, it) \
202 LASSERT(ll_d2d(de) != NULL); \
204 LASSERT(it->it_op != IT_RELEASED_MAGIC); \
206 CDEBUG(D_DENTRY, "D_IT UP dentry %p fsdata %p intent: %s\n", \
207 de, ll_d2d(de), ldlm_it2str(de->d_it->it_op)); \
209 it->it_op = IT_RELEASED_MAGIC; \
210 up(&ll_d2d(de)->lld_it_sem); \
214 int ll_have_md_lock(struct dentry *de);
217 extern struct file_operations ll_dir_operations;
218 extern struct inode_operations ll_dir_inode_operations;
221 extern struct file_operations ll_file_operations;
222 extern struct inode_operations ll_file_inode_operations;
224 int ll_lock_callback(struct ldlm_lock *, struct ldlm_lock_desc *, void *data,
225 __u32 data_len, int flag);
226 int ll_size_lock(struct inode *, struct lov_stripe_md *, obd_off start,
227 int mode, struct lustre_handle **);
228 int ll_size_unlock(struct inode *, struct lov_stripe_md *, int mode,
229 struct lustre_handle *);
230 int ll_file_size(struct inode *inode, struct lov_stripe_md *md);
231 int ll_create_objects(struct super_block *sb, obd_id id, uid_t uid,
232 gid_t gid, struct lov_stripe_md **lsmp);
235 struct page *ll_getpage(struct inode *inode, unsigned long offset,
236 int create, int locked);
237 void ll_truncate(struct inode *inode);
240 void ll_update_inode(struct inode *, struct mds_body *);
243 extern struct inode_operations ll_fast_symlink_inode_operations;
244 extern struct inode_operations ll_symlink_inode_operations;
247 void ll_sysctl_init(void);
248 void ll_sysctl_clean(void);
250 #endif /* __KERNEL__ */
252 #include <asm/types.h>
254 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
255 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
256 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
257 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
258 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
260 #define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */
262 #define LL_FILE_IGNORE_LOCK 0x00000001