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>
29 extern kmem_cache_t *ll_file_data_slab;
31 struct lustre_handle fd_mdshandle;
32 struct ptlrpc_request *fd_req;
33 char fd_ostdata[FD_OSTDATA_SIZE];
37 struct lustre_intent_data {
38 __u64 it_lock_handle[2];
44 struct ll_dentry_data {
45 struct semaphore lld_it_sem;
48 #define ll_d2d(dentry) ((struct ll_dentry_data*) dentry->d_fsdata)
50 struct ll_read_inode2_cookie {
51 struct mds_body *lic_body;
52 struct lov_mds_md *lic_lmm;
55 struct ll_inode_info {
56 struct lov_stripe_md *lli_smd;
57 char *lli_symlink_name;
58 struct semaphore lli_open_sem;
59 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
60 struct inode lli_vfs_inode;
64 /* interpet return codes from intent lookup */
65 #define LL_LOOKUP_POSITIVE 1
66 #define LL_LOOKUP_NEGATIVE 2
68 #define LL_SUPER_MAGIC 0x0BD00BD0
70 #define LL_COMMITCBD_STOPPING 0x1
71 #define LL_COMMITCBD_STOPPED 0x2
72 #define LL_COMMITCBD_RUNNING 0x4
74 #define LL_SBI_NOLCK 0x1
77 struct obd_uuid ll_sb_uuid;
78 struct lustre_handle ll_mdc_conn;
79 struct lustre_handle ll_osc_conn;
80 struct proc_dir_entry* ll_proc_root;
81 obd_id ll_rootino; /* number of root inode */
84 wait_queue_head_t ll_commitcbd_waitq;
85 wait_queue_head_t ll_commitcbd_ctl_waitq;
86 int ll_commitcbd_flags;
87 struct task_struct *ll_commitcbd_thread;
88 time_t ll_commitcbd_waketime;
89 time_t ll_commitcbd_timeout;
90 spinlock_t ll_commitcbd_lock;
91 struct list_head ll_conn_chain; /* per-conn chain of SBs */
93 struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
96 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
98 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
99 return (struct ll_sb_info *)(sb->s_fs_info);
101 return (struct ll_sb_info *)(sb->u.generic_sbp);
105 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
107 return &(ll_s2sbi(sb))->ll_osc_conn;
110 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
112 struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
118 // FIXME: replace the name of this with LL_SB to conform to kernel stuff
119 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
121 return ll_s2sbi(inode->i_sb);
124 static inline void d_unhash_aliases(struct inode *inode)
126 struct dentry *dentry = NULL;
127 struct list_head *tmp;
128 struct ll_sb_info *sbi = ll_i2sbi(inode);
131 CDEBUG(D_INODE, "marking dentries for ino %lx/%x invalid\n",
132 inode->i_ino, inode->i_generation);
134 spin_lock(&dcache_lock);
135 list_for_each(tmp, &inode->i_dentry) {
136 dentry = list_entry(tmp, struct dentry, d_alias);
138 list_del_init(&dentry->d_hash);
139 dentry->d_flags |= DCACHE_LUSTRE_INVALID;
140 list_add(&dentry->d_hash, &sbi->ll_orphan_dentry_list);
143 spin_unlock(&dcache_lock);
147 // FIXME: replace the name of this with LL_I to conform to kernel stuff
148 // static inline struct ll_inode_info *LL_I(struct inode *inode)
149 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
151 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
152 return container_of(inode, struct ll_inode_info, lli_vfs_inode);
154 return (struct ll_inode_info *)&(inode->u.generic_ip);
158 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
160 return ll_s2obdconn(inode->i_sb);
163 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
167 fid->generation = generation;
171 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
173 ll_ino2fid(fid, inode->i_ino, inode->i_generation,
174 inode->i_mode & S_IFMT);
177 static inline int ll_mds_max_easize(struct super_block *sb)
179 return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize;
183 int ll_lock(struct inode *dir, struct dentry *dentry,
184 struct lookup_intent *it, struct lustre_handle *lockh);
185 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
187 typedef int (*intent_finish_cb)(int flag, struct ptlrpc_request *,
188 struct dentry **, struct lookup_intent *,
189 int offset, obd_id ino);
190 int ll_intent_lock(struct inode *parent, struct dentry **,
191 struct lookup_intent *, intent_finish_cb);
194 void ll_intent_release(struct dentry *, struct lookup_intent *);
198 I originally implmented these as functions, then realized a macro
199 would be more helpful for debugging, so the CDEBUG messages show
200 the current calling function. The orignal functions are in llite/dcache.c
202 int ll_save_intent(struct dentry * de, struct lookup_intent * it);
203 struct lookup_intent * ll_get_intent(struct dentry * de);
206 #define IT_RELEASED_MAGIC 0xDEADCAFE
208 #define LL_SAVE_INTENT(de, it) \
210 LASSERT(ll_d2d(de) != NULL); \
212 down(&ll_d2d(de)->lld_it_sem); \
213 LASSERT(de->d_it == NULL); \
215 CDEBUG(D_DENTRY, "D_IT DOWN dentry %p fsdata %p intent: %s sem %d\n", \
216 de, ll_d2d(de), ldlm_it2str(de->d_it->it_op), \
217 atomic_read(&(ll_d2d(de)->lld_it_sem.count))); \
220 #define LL_GET_INTENT(de, it) \
224 LASSERT(ll_d2d(de) != NULL); \
226 LASSERT(it->it_op != IT_RELEASED_MAGIC); \
228 CDEBUG(D_DENTRY, "D_IT UP dentry %p fsdata %p intent: %s\n", \
229 de, ll_d2d(de), ldlm_it2str(de->d_it->it_op)); \
231 it->it_op = IT_RELEASED_MAGIC; \
232 up(&ll_d2d(de)->lld_it_sem); \
236 int ll_have_md_lock(struct dentry *de);
239 extern struct file_operations ll_dir_operations;
240 extern struct inode_operations ll_dir_inode_operations;
243 extern struct file_operations ll_file_operations;
244 extern struct inode_operations ll_file_inode_operations;
245 extern struct inode_operations ll_special_inode_operations;
247 int ll_lock_callback(struct ldlm_lock *, struct ldlm_lock_desc *, void *data,
249 int ll_size_lock(struct inode *, struct lov_stripe_md *, obd_off start,
250 int mode, struct lustre_handle *);
251 int ll_size_unlock(struct inode *, struct lov_stripe_md *, int mode,
252 struct lustre_handle *);
253 int ll_file_size(struct inode *inode, struct lov_stripe_md *md, char *ostdata);
254 int ll_create_objects(struct super_block *sb, obd_id id, uid_t uid,
255 gid_t gid, struct lov_stripe_md **lsmp);
258 struct page *ll_getpage(struct inode *inode, unsigned long offset,
259 int create, int locked);
260 void ll_truncate(struct inode *inode);
263 void ll_update_inode(struct inode *, struct mds_body *, struct lov_mds_md *);
264 int ll_setattr_raw(struct inode *inode, struct iattr *attr);
267 extern struct inode_operations ll_fast_symlink_inode_operations;
268 extern struct inode_operations ll_symlink_inode_operations;
271 void ll_sysctl_init(void);
272 void ll_sysctl_clean(void);
274 #endif /* __KERNEL__ */
276 #include <asm/types.h>
278 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
279 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
280 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
281 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
282 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
284 #define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */
286 #define LL_FILE_IGNORE_LOCK 0x00000001