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)
18 /* this protects pglist and max_r_a_pages. It isn't safe to
19 * grab from interrupt contexts */
21 struct obd_uuid ll_sb_uuid;
22 struct obd_export *ll_mdc_exp;
23 struct obd_export *ll_osc_exp;
24 struct proc_dir_entry* ll_proc_root;
25 obd_id ll_rootino; /* number of root inode */
27 struct lustre_mount_data *ll_lmd;
31 struct list_head ll_conn_chain; /* per-conn chain of SBs */
33 struct hlist_head ll_orphan_dentry_list; /*please don't ask -p*/
34 struct ll_close_queue *ll_lcq;
36 struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
38 unsigned long ll_pglist_gen;
39 struct list_head ll_pglist;
41 unsigned long ll_read_ahead_pages;
42 unsigned long ll_max_read_ahead_pages;
46 struct ll_readahead_state {
48 unsigned long ras_last_readpage, ras_consecutive;
49 unsigned long ras_window_start, ras_window_len;
50 unsigned long ras_next_readahead;
54 extern kmem_cache_t *ll_file_data_slab;
57 struct obd_client_handle fd_mds_och;
58 struct ll_readahead_state fd_ras;
60 struct lustre_handle fd_cwlockh;
66 extern spinlock_t inode_lock;
68 extern void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
69 extern struct proc_dir_entry *proc_lustre_fs_root;
71 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
72 # define hlist_del_init list_del_init
75 static inline struct inode *ll_info2i(struct ll_inode_info *lli)
77 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
78 return &lli->lli_vfs_inode;
80 return list_entry(lli, struct inode, u.generic_ip);
84 static inline void ll_i2uctxt(struct ll_uctxt *ctxt, struct inode *i1,
90 if (in_group_p(i1->i_gid))
91 ctxt->gid1 = i1->i_gid;
96 if (in_group_p(i2->i_gid))
97 ctxt->gid2 = i2->i_gid;
105 struct inode *icbd_parent;
106 struct dentry **icbd_childp;
110 #define LLAP_MAGIC 98764321
112 struct ll_async_page {
115 struct page *llap_page;
116 struct list_head llap_pending_write;
117 /* only trust these if the page lock is providing exclusion */
118 int llap_write_queued:1,
119 llap_defer_uptodate:1;
120 struct list_head llap_proc_item;
123 #define LL_CDEBUG_PAGE(mask, page, fmt, arg...) \
124 CDEBUG(mask, "page %p map %p ind %lu priv %0lx: " fmt, \
125 page, page->mapping, page->index, page->private, ## arg)
127 /* llite/lproc_llite.c */
128 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
129 struct super_block *sb, char *osc, char *mdc);
130 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
133 extern struct file_operations ll_dir_operations;
134 extern struct inode_operations ll_dir_inode_operations;
137 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
138 struct inode *ll_iget(struct super_block *sb, ino_t hash,
139 struct lustre_md *lic);
140 struct dentry *ll_find_alias(struct inode *, struct dentry *);
141 int ll_mdc_cancel_unused(struct lustre_handle *, struct inode *, int flags,
143 int ll_mdc_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
144 void *data, int flag);
145 void ll_prepare_mdc_op_data(struct mdc_op_data *,
146 struct inode *i1, struct inode *i2,
147 const char *name, int namelen, int mode);
150 int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to);
151 int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to);
152 void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa);
153 void ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
154 void ll_removepage(struct page *page);
155 int ll_readpage(struct file *file, struct page *page);
156 struct ll_async_page *llap_from_cookie(void *cookie);
157 struct ll_async_page *llap_from_page(struct page *page);
158 void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras);
160 void ll_truncate(struct inode *inode);
163 extern struct file_operations ll_file_operations;
164 extern struct inode_operations ll_file_inode_operations;
165 extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *);
166 int ll_extent_lock(struct ll_file_data *, struct inode *,
167 struct lov_stripe_md *, int mode, ldlm_policy_data_t *,
168 struct lustre_handle *, int ast_flags);
169 int ll_extent_unlock(struct ll_file_data *, struct inode *,
170 struct lov_stripe_md *, int mode, struct lustre_handle *);
171 int ll_file_open(struct inode *inode, struct file *file);
172 int ll_file_release(struct inode *inode, struct file *file);
173 int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *);
174 int ll_glimpse_size(struct inode *inode, struct ost_lvb *lvb);
175 int ll_local_open(struct file *file, struct lookup_intent *it);
176 int ll_mdc_close(struct obd_export *mdc_exp, struct inode *inode,
178 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
179 int ll_getattr(struct vfsmount *mnt, struct dentry *de,
180 struct lookup_intent *it, struct kstat *stat);
184 void ll_intent_drop_lock(struct lookup_intent *);
185 void ll_intent_release(struct lookup_intent *);
186 extern void ll_set_dd(struct dentry *de);
187 void ll_unhash_aliases(struct inode *);
188 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft);
189 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
191 /* llite/llite_lib.c */
193 extern struct super_operations lustre_super_operations;
195 char *ll_read_opt(const char *opt, char *data);
196 int ll_set_opt(const char *opt, char *data, int fl);
197 void ll_options(char *options, char **ost, char **mds, int *flags);
198 void ll_lli_init(struct ll_inode_info *lli);
199 int ll_fill_super(struct super_block *sb, void *data, int silent);
200 int lustre_fill_super(struct super_block *sb, void *data, int silent);
201 void lustre_put_super(struct super_block *sb);
202 struct inode *ll_inode_from_lock(struct ldlm_lock *lock);
203 void ll_clear_inode(struct inode *inode);
204 int ll_attr2inode(struct inode *inode, struct iattr *attr, int trunc);
205 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
206 int ll_setattr(struct dentry *de, struct iattr *attr);
207 int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
208 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
209 unsigned long maxage);
210 void ll_update_inode(struct inode *inode, struct mds_body *body,
211 struct lov_stripe_md *lsm);
212 int it_disposition(struct lookup_intent *it, int flag);
213 void it_set_disposition(struct lookup_intent *it, int flag);
214 void ll_read_inode2(struct inode *inode, void *opaque);
215 int ll_iocontrol(struct inode *inode, struct file *file,
216 unsigned int cmd, unsigned long arg);
217 void ll_umount_begin(struct super_block *sb);
218 int ll_prep_inode(struct obd_export *exp, struct inode **inode,
219 struct ptlrpc_request *req, int offset, struct super_block *);
220 __u32 get_uuid2int(const char *name, int len);
221 struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len,
222 int fhtype, int parent);
223 int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent);
225 /* llite/special.c */
226 extern struct inode_operations ll_special_inode_operations;
227 extern struct file_operations ll_special_chr_inode_fops;
228 extern struct file_operations ll_special_chr_file_fops;
229 extern struct file_operations ll_special_blk_inode_fops;
230 extern struct file_operations ll_special_fifo_inode_fops;
231 extern struct file_operations ll_special_fifo_file_fops;
232 extern struct file_operations ll_special_sock_inode_fops;
234 /* llite/symlink.c */
235 extern struct inode_operations ll_fast_symlink_inode_operations;
237 /* llite/llite_close.c */
238 struct ll_close_queue {
240 struct list_head lcq_list;
241 wait_queue_head_t lcq_waitq;
242 struct completion lcq_comp;
245 void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
246 void llap_write_complete(struct inode *inode, struct ll_async_page *llap);
247 void ll_open_complete(struct inode *inode);
248 int ll_is_inode_dirty(struct inode *inode);
249 void ll_try_done_writing(struct inode *inode);
250 void ll_queue_done_writing(struct inode *inode);
251 void ll_close_thread_shutdown(struct ll_close_queue *lcq);
252 int ll_close_thread_start(struct ll_close_queue **lcq_ret);
255 #define LL_SUPER_MAGIC 0x0BD00BD0
257 #define LL_SBI_NOLCK 0x1
258 #define LL_SBI_READAHEAD 0x2
260 #define LL_MAX_BLKSIZE (4UL * 1024 * 1024)
262 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
263 #define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->s_fs_info))
264 void __d_rehash(struct dentry * entry, int lock);
265 static inline __u64 ll_ts2u64(struct timespec *time)
267 __u64 t = time->tv_sec;
271 #define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->u.generic_sbp))
272 static inline __u64 ll_ts2u64(time_t *time)
278 /* don't need an addref as the sb_info should be holding one */
279 static inline struct obd_export *ll_s2obdexp(struct super_block *sb)
281 return ll_s2sbi(sb)->ll_osc_exp;
284 /* don't need an addref as the sb_info should be holding one */
285 static inline struct obd_export *ll_s2mdcexp(struct super_block *sb)
287 return ll_s2sbi(sb)->ll_mdc_exp;
290 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
292 struct obd_device *obd = sbi->ll_mdc_exp->exp_obd;
298 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
299 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
301 return ll_s2sbi(inode->i_sb);
304 static inline struct obd_export *ll_i2obdexp(struct inode *inode)
306 return ll_s2obdexp(inode->i_sb);
309 static inline struct obd_export *ll_i2mdcexp(struct inode *inode)
311 return ll_s2mdcexp(inode->i_sb);
314 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
316 mdc_pack_fid(fid, inode->i_ino, inode->i_generation,
317 inode->i_mode & S_IFMT);
320 static inline int ll_mds_max_easize(struct super_block *sb)
322 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
325 static inline __u64 ll_file_maxbytes(struct inode *inode)
327 return ll_i2info(inode)->lli_maxbytes;
330 #endif /* LLITE_INTERNAL_H */