1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2003 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
10 #ifndef LLITE_INTERNAL_H
11 #define LLITE_INTERNAL_H
13 /* default to about 40meg of readahead on a given system. That much tied
14 * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
15 #define SBI_DEFAULT_RA_MAX ((40 << 20) >> PAGE_CACHE_SHIFT)
20 RA_STAT_DISTANT_READPAGE,
21 RA_STAT_MISS_IN_WINDOW,
27 RA_STAT_MAX_IN_FLIGHT,
32 unsigned long ra_cur_pages;
33 unsigned long ra_max_pages;
34 unsigned long ra_stats[_NR_RA_STAT];
38 /* this protects pglist and ra_info. It isn't safe to
39 * grab from interrupt contexts */
41 struct obd_uuid ll_sb_uuid;
42 struct obd_export *ll_mdc_exp;
43 struct obd_export *ll_osc_exp;
44 struct proc_dir_entry* ll_proc_root;
45 obd_id ll_rootino; /* number of root inode */
47 struct lustre_mount_data *ll_lmd;
51 struct list_head ll_conn_chain; /* per-conn chain of SBs */
53 struct hlist_head ll_orphan_dentry_list; /*please don't ask -p*/
54 struct ll_close_queue *ll_lcq;
56 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
58 unsigned long ll_pglist_gen;
59 struct list_head ll_pglist;
61 struct ll_ra_info ll_ra_info;
63 /* times spent waiting for locks in each call site. These are
64 * all protected by the ll_lock */
65 struct obd_service_time ll_read_stime;
66 struct obd_service_time ll_write_stime;
67 struct obd_service_time ll_grouplock_stime;
68 struct obd_service_time ll_seek_stime;
69 struct obd_service_time ll_setattr_stime;
70 struct obd_service_time ll_brw_stime;
71 // struct obd_service_time ll_done_stime;
73 int ll_config_version; /* last-applied update */
75 /* list of GNS mounts; protected by the dcache_lock */
76 struct list_head ll_mnt_list;
78 struct semaphore ll_gns_sem;
79 wait_queue_head_t ll_gns_waitq;
80 struct completion ll_gns_completion;
82 struct timer_list ll_gns_timer;
83 struct list_head ll_gns_sbi_head;
86 #define LL_GNS_STATE_IDLE 1100
87 #define LL_GNS_STATE_MOUNTING 1101
88 #define LL_GNS_STATE_FINISHED 1102
90 struct ll_readahead_state {
92 unsigned long ras_last_readpage, ras_consecutive;
93 unsigned long ras_window_start, ras_window_len;
94 unsigned long ras_next_readahead;
98 extern kmem_cache_t *ll_file_data_slab;
100 struct ll_file_data {
101 struct obd_client_handle fd_mds_och;
102 struct ll_readahead_state fd_ras;
104 struct lustre_handle fd_cwlockh;
105 unsigned long fd_gid;
108 struct lov_stripe_md;
110 extern spinlock_t inode_lock;
112 extern void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
113 extern struct proc_dir_entry *proc_lustre_fs_root;
115 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
116 # define hlist_del_init list_del_init
119 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
121 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
122 return &lli->lli_vfs_inode;
124 return list_entry(lli, struct inode, u.generic_ip);
130 struct inode *icbd_parent;
131 struct dentry **icbd_childp;
135 #define LLAP_MAGIC 98764321
137 struct ll_async_page {
140 struct page *llap_page;
141 struct list_head llap_pending_write;
142 /* only trust these if the page lock is providing exclusion */
143 unsigned llap_write_queued:1,
144 llap_defer_uptodate:1,
147 struct list_head llap_proc_item;
150 #define LL_CDEBUG_PAGE(mask, page, fmt, arg...) \
151 CDEBUG(mask, "page %p map %p ind %lu priv %0lx: " fmt, \
152 page, page->mapping, page->index, page->private, ## arg)
154 /* llite/lproc_llite.c */
155 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
156 struct super_block *sb, char *osc, char *mdc);
157 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
160 extern struct file_operations ll_dir_operations;
161 extern struct inode_operations ll_dir_inode_operations;
164 int ll_objects_destroy(struct ptlrpc_request *request,
165 struct inode *dir, int offset);
166 struct inode *ll_iget(struct super_block *sb, ino_t hash,
167 struct lustre_md *lic);
168 struct dentry *ll_find_alias(struct inode *, struct dentry *);
169 int ll_mdc_cancel_unused(struct lustre_handle *, struct inode *, int flags,
171 int ll_mdc_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
172 void *data, int flag);
174 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
175 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
176 int ll_writepage(struct page *page);
177 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
178 void ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
179 void ll_removepage(struct page *page);
180 int ll_readpage(struct file *file, struct page *page);
181 struct ll_async_page *llap_from_cookie(void *cookie);
182 struct ll_async_page *llap_from_page(struct page *page);
183 struct ll_async_page *llap_cast_private(struct page *page);
184 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
186 void ll_ra_accounting(struct page *page, struct address_space *mapping);
187 void ll_truncate(struct inode *inode);
190 extern struct file_operations ll_file_operations;
191 extern struct inode_operations ll_file_inode_operations;
192 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *);
193 int ll_refresh_lsm(struct inode *inode, struct lov_stripe_md *lsm);
194 int ll_extent_lock(struct ll_file_data *, struct inode *,
195 struct lov_stripe_md *, int mode, ldlm_policy_data_t *,
196 struct lustre_handle *, int ast_flags,
197 struct obd_service_time *);
198 int ll_extent_unlock(struct ll_file_data *, struct inode *,
199 struct lov_stripe_md *, int mode, struct lustre_handle *);
200 int ll_file_open(struct inode *inode, struct file *file);
201 int ll_file_release(struct inode *inode, struct file *file);
202 int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *);
203 int ll_glimpse_size(struct inode *inode);
204 int ll_local_open(struct file *file, struct lookup_intent *it);
205 int ll_mdc_close(struct obd_export *mdc_exp, struct inode *inode,
207 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
208 int ll_getattr(struct vfsmount *mnt, struct dentry *de,
209 struct lookup_intent *it, struct kstat *stat);
211 void ll_stime_record(struct ll_sb_info *sbi, struct timeval *start,
212 struct obd_service_time *stime);
215 void ll_intent_drop_lock(struct lookup_intent *);
216 void ll_intent_release(struct lookup_intent *);
217 extern void ll_set_dd(struct dentry *de);
218 void ll_unhash_aliases(struct inode *);
219 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
220 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
221 int revalidate_it_finish(struct ptlrpc_request *request, int offset,
222 struct lookup_intent *it, struct dentry *de);
225 /* llite/llite_gns.c */
226 int ll_finish_gns(struct ll_sb_info *sbi);
227 int fill_page_with_path(struct dentry *, struct vfsmount *, char **pagep);
228 int ll_dir_process_mount_object(struct dentry *, struct vfsmount *);
229 int ll_gns_umount_all(struct ll_sb_info *sbi, int timeout);
230 void ll_gns_timer_callback(unsigned long data);
231 void ll_gns_add_timer(struct ll_sb_info *sbi);
232 void ll_gns_del_timer(struct ll_sb_info *sbi);
233 int ll_gns_start_thread(void);
234 void ll_gns_stop_thread(void);
236 /* llite/llite_lib.c */
237 extern struct super_operations lustre_super_operations;
239 char *ll_read_opt(const char *opt, char *data);
240 int ll_set_opt(const char *opt, char *data, int fl);
241 void ll_options(char *options, char **ost, char **mds, int *flags);
242 void ll_lli_init(struct ll_inode_info *lli);
243 int ll_fill_super(struct super_block *sb, void *data, int silent);
244 int lustre_fill_super(struct super_block *sb, void *data, int silent);
245 void lustre_put_super(struct super_block *sb);
246 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
247 void ll_clear_inode(struct inode *inode);
248 int ll_attr2inode(struct inode *inode, struct iattr *attr, int trunc);
249 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
250 int ll_setattr(struct dentry *de, struct iattr *attr);
251 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
252 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
253 unsigned long maxage);
254 void ll_update_inode(struct inode *inode, struct lustre_md *);
255 int it_disposition(struct lookup_intent *it, int flag);
256 void it_set_disposition(struct lookup_intent *it, int flag);
257 void ll_read_inode2(struct inode *inode, void *opaque);
258 void ll_delete_inode(struct inode *inode);
259 int ll_iocontrol(struct inode *inode, struct file *file,
260 unsigned int cmd, unsigned long arg);
261 void ll_umount_begin(struct super_block *sb);
262 int ll_prep_inode(struct obd_export *, struct obd_export *, struct inode **inode,
263 struct ptlrpc_request *req, int offset, struct super_block *);
264 __u32 get_uuid2int(const char *name, int len);
265 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
266 int fhtype, int parent);
267 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
268 int null_if_equal(struct ldlm_lock *lock, void *data);
269 int ll_process_config_update(struct ll_sb_info *sbi, int clean);
271 /* llite/special.c */
272 extern struct inode_operations ll_special_inode_operations;
273 extern struct file_operations ll_special_chr_inode_fops;
274 extern struct file_operations ll_special_chr_file_fops;
275 extern struct file_operations ll_special_blk_inode_fops;
276 extern struct file_operations ll_special_fifo_inode_fops;
277 extern struct file_operations ll_special_fifo_file_fops;
278 extern struct file_operations ll_special_sock_inode_fops;
280 /* llite/symlink.c */
281 extern struct inode_operations ll_fast_symlink_inode_operations;
283 /* llite/llite_close.c */
284 struct ll_close_queue {
286 struct list_head lcq_list;
287 wait_queue_head_t lcq_waitq;
288 struct completion lcq_comp;
291 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
292 void llap_write_complete(struct inode *inode, struct ll_async_page *llap);
293 void ll_open_complete(struct inode *inode);
294 int ll_is_inode_dirty(struct inode *inode);
295 void ll_try_done_writing(struct inode *inode);
296 void ll_queue_done_writing(struct inode *inode);
297 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
298 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
301 /* llite/llite_mmap.c */
302 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
303 typedef struct rb_root rb_root_t;
304 typedef struct rb_node rb_node_t;
307 struct ll_lock_tree_node;
308 struct ll_lock_tree {
310 struct list_head lt_locked_list;
311 struct ll_file_data *lt_fd;
313 int ll_teardown_mmaps(struct address_space *mapping, __u64 first,
315 int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
316 struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start,
317 __u64 end, ldlm_mode_t mode);
318 int ll_tree_lock(struct ll_lock_tree *tree,
319 struct ll_lock_tree_node *first_node, struct inode *inode,
320 const char *buf, size_t count, int ast_flags);
321 int ll_tree_unlock(struct ll_lock_tree *tree, struct inode *inode);
328 #define LL_SBI_NOLCK 0x1
329 #define LL_SBI_READAHEAD 0x2
330 #define LL_SUPER_MAGIC 0x0BD00BD0
331 #define LL_MAX_BLKSIZE (4UL * 1024 * 1024)
333 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
334 #define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->s_fs_info))
335 #define ll_set_sbi(sb, sbi) ((sb)->s_fs_info = sbi)
336 void __d_rehash(struct dentry * entry, int lock);
337 static inline __u64 ll_ts2u64(struct timespec *time)
339 __u64 t = time->tv_sec;
343 #define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->u.generic_sbp))
344 #define ll_set_sbi(sb, sbi) ((sb)->u.generic_sbp = sbi)
345 static inline __u64 ll_ts2u64(time_t *time)
351 /* don't need an addref as the sb_info should be holding one */
352 static inline struct obd_export *ll_s2obdexp(struct super_block *sb)
354 return ll_s2sbi(sb)->ll_osc_exp;
357 /* don't need an addref as the sb_info should be holding one */
358 static inline struct obd_export *ll_s2mdcexp(struct super_block *sb)
360 return ll_s2sbi(sb)->ll_mdc_exp;
363 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
365 struct obd_device *obd = sbi->ll_mdc_exp->exp_obd;
371 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
372 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
374 return ll_s2sbi(inode->i_sb);
377 static inline struct obd_export *ll_i2obdexp(struct inode *inode)
379 return ll_s2obdexp(inode->i_sb);
382 static inline struct obd_export *ll_i2mdcexp(struct inode *inode)
384 return ll_s2mdcexp(inode->i_sb);
387 static inline int ll_mds_max_easize(struct super_block *sb)
389 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
392 static inline __u64 ll_file_maxbytes(struct inode *inode)
394 return ll_i2info(inode)->lli_maxbytes;
397 #endif /* LLITE_INTERNAL_H */