/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * lustre lite cluster file system * * This code is issued under the GNU General Public License. * See the file COPYING in this distribution * * Copyright (C) 2002 Cluster File Systems, Inc. */ #ifndef _LL_H #define _LL_H #ifdef __KERNEL__ #include #include #include #include #include #include #include #include #include #include /* careful, this is easy to screw up */ #define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << PAGE_CACHE_SHIFT) extern kmem_cache_t *ll_file_data_slab; struct ll_file_data { struct obd_client_handle fd_mds_och; struct obd_client_handle fd_ost_och; __u32 fd_flags; }; struct lustre_intent_data { __u64 it_lock_handle[2]; __u32 it_disposition; __u32 it_status; __u32 it_lock_mode; }; struct ll_dentry_data { struct semaphore lld_it_sem; }; #define ll_d2d(dentry) ((struct ll_dentry_data*) dentry->d_fsdata) struct ll_dirty_offsets { rb_root_t do_root; spinlock_t do_lock; unsigned long do_num_dirty; }; void ll_lldo_init(struct ll_dirty_offsets *lldo); void ll_record_dirty(struct inode *inode, unsigned long offset); void ll_remove_dirty(struct inode *inode, unsigned long start, unsigned long end); int ll_find_dirty(struct ll_dirty_offsets *lldo, unsigned long *start, unsigned long *end); int ll_farthest_dirty(struct ll_dirty_offsets *lldo, unsigned long *farthest); extern struct file_operations ll_pgcache_seq_fops; struct ll_inode_info { struct lov_stripe_md *lli_smd; char *lli_symlink_name; struct semaphore lli_open_sem; struct list_head lli_read_extents; loff_t lli_maxbytes; spinlock_t lli_read_extent_lock; struct ll_dirty_offsets lli_dirty; unsigned long lli_flags; #define LLI_F_HAVE_SIZE_LOCK 0 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) struct inode lli_vfs_inode; #endif }; /* * this lets ll_file_read tell ll_readpages how far ahead it can read * and still be covered by ll_file_read's lock. 2.5 won't need this, but * we have the other problem of other readpage callers making sure that * they're covered by a lock.. */ struct ll_read_extent { struct list_head re_lli_item; struct task_struct *re_task; struct ldlm_extent re_extent; }; int ll_check_dirty( struct super_block *sb ); int ll_batch_writepage( struct inode *inode, struct page *page ); /* interpet return codes from intent lookup */ #define LL_LOOKUP_POSITIVE 1 #define LL_LOOKUP_NEGATIVE 2 #define LL_SUPER_MAGIC 0x0BD00BD0 #define LL_COMMITCBD_STOPPING 0x1 #define LL_COMMITCBD_STOPPED 0x2 #define LL_COMMITCBD_RUNNING 0x4 #define LL_SBI_NOLCK 0x1 struct ll_sb_info { struct obd_uuid ll_sb_uuid; struct lustre_handle ll_mdc_conn; struct lustre_handle ll_osc_conn; struct proc_dir_entry* ll_proc_root; obd_id ll_rootino; /* number of root inode */ int ll_flags; wait_queue_head_t ll_commitcbd_waitq; wait_queue_head_t ll_commitcbd_ctl_waitq; int ll_commitcbd_flags; struct task_struct *ll_commitcbd_thread; time_t ll_commitcbd_waketime; time_t ll_commitcbd_timeout; spinlock_t ll_commitcbd_lock; struct list_head ll_conn_chain; /* per-conn chain of SBs */ struct list_head ll_orphan_dentry_list; /*please don't ask -p*/ struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ }; static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb) { #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) return (struct ll_sb_info *)(sb->s_fs_info); #else return (struct ll_sb_info *)(sb->u.generic_sbp); #endif } static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb) { return &(ll_s2sbi(sb))->ll_osc_conn; } static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi) { struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn); if (obd == NULL) LBUG(); return &obd->u.cli; } // FIXME: replace the name of this with LL_SB to conform to kernel stuff static inline struct ll_sb_info *ll_i2sbi(struct inode *inode) { return ll_s2sbi(inode->i_sb); } static inline void d_unhash_aliases(struct inode *inode) { struct dentry *dentry = NULL; struct list_head *tmp; struct ll_sb_info *sbi = ll_i2sbi(inode); ENTRY; CDEBUG(D_INODE, "marking dentries for ino %lx/%x invalid\n", inode->i_ino, inode->i_generation); spin_lock(&dcache_lock); list_for_each(tmp, &inode->i_dentry) { dentry = list_entry(tmp, struct dentry, d_alias); list_del_init(&dentry->d_hash); dentry->d_flags |= DCACHE_LUSTRE_INVALID; list_add(&dentry->d_hash, &sbi->ll_orphan_dentry_list); } spin_unlock(&dcache_lock); EXIT; } // FIXME: replace the name of this with LL_I to conform to kernel stuff // static inline struct ll_inode_info *LL_I(struct inode *inode) static inline struct ll_inode_info *ll_i2info(struct inode *inode) { #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) return container_of(inode, struct ll_inode_info, lli_vfs_inode); #else return (struct ll_inode_info *)&(inode->u.generic_ip); #endif } static inline struct lustre_handle *ll_i2obdconn(struct inode *inode) { return ll_s2obdconn(inode->i_sb); } static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation, int type); static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode) { ll_ino2fid(fid, inode->i_ino, inode->i_generation, inode->i_mode & S_IFMT); } static inline int ll_mds_max_easize(struct super_block *sb) { return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize; } static inline loff_t ll_file_maxbytes(struct inode *inode) { return ll_i2info(inode)->lli_maxbytes; } /* namei.c */ int ll_lock(struct inode *dir, struct dentry *dentry, struct lookup_intent *it, struct lustre_handle *lockh); int ll_unlock(__u32 mode, struct lustre_handle *lockh); typedef int (*intent_finish_cb)(int flag, struct ptlrpc_request *, struct inode *parent, struct dentry **, struct lookup_intent *, int offset, obd_id ino); int ll_intent_lock(struct inode *parent, struct dentry **, struct lookup_intent *, intent_finish_cb); int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, void *data, int flag); void ll_mdc_lock_set_inode(struct lustre_handle *lock, struct inode *inode); void ll_prepare_mdc_op_data(struct mdc_op_data *data, struct inode *i1, struct inode *i2, const char *name, int namelen, int mode); /* dcache.c */ void ll_intent_release(struct dentry *, struct lookup_intent *); /**** I originally implmented these as functions, then realized a macro would be more helpful for debugging, so the CDEBUG messages show the current calling function. The orignal functions are in llite/dcache.c int ll_save_intent(struct dentry * de, struct lookup_intent * it); struct lookup_intent * ll_get_intent(struct dentry * de); ****/ #define IT_RELEASED_MAGIC 0xDEADCAFE #define LL_SAVE_INTENT(de, it) \ do { \ LASSERT(ll_d2d(de) != NULL); \ \ down(&ll_d2d(de)->lld_it_sem); \ LASSERT(de->d_it == NULL); \ de->d_it = it; \ CDEBUG(D_DENTRY, "D_IT DOWN dentry %p fsdata %p intent: %s sem %d\n", \ de, ll_d2d(de), ldlm_it2str(de->d_it->it_op), \ atomic_read(&(ll_d2d(de)->lld_it_sem.count))); \ } while(0) #define LL_GET_INTENT(de, it) \ do { \ it = de->d_it; \ \ LASSERT(ll_d2d(de) != NULL); \ LASSERT(it); \ LASSERT(it->it_op != IT_RELEASED_MAGIC); \ \ CDEBUG(D_DENTRY, "D_IT UP dentry %p fsdata %p intent: %s\n", \ de, ll_d2d(de), ldlm_it2str(de->d_it->it_op)); \ de->d_it = NULL; \ it->it_op = IT_RELEASED_MAGIC; \ up(&ll_d2d(de)->lld_it_sem); \ } while(0) #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0") enum { LPROC_LL_DIRTY_PAGES = 0, LPROC_LL_DIRTY_HITS, LPROC_LL_DIRTY_MISSES, LPROC_LL_WB_WRITEPAGE, LPROC_LL_WB_PRESSURE, LPROC_LL_WB_OK, LPROC_LL_WB_FAIL, LPROC_LL_READ_BYTES, LPROC_LL_WRITE_BYTES, LPROC_LL_BRW_READ, LPROC_LL_BRW_WRITE, LPROC_LL_IOCTL, LPROC_LL_OPEN, LPROC_LL_RELEASE, LPROC_LL_MAP, LPROC_LL_LLSEEK, LPROC_LL_FSYNC, LPROC_LL_SETATTR_RAW, LPROC_LL_SETATTR, LPROC_LL_TRUNC, #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) LPROC_LL_GETATTR, #else LPROC_LL_REVALIDATE, #endif LPROC_LL_STAFS, LPROC_LL_ALLOC_INODE, LPROC_LL_DIRECT_READ, LPROC_LL_DIRECT_WRITE, LPROC_LL_FILE_OPCODES }; /* dcache.c */ int ll_have_md_lock(struct dentry *de); /* dir.c */ extern struct file_operations ll_dir_operations; extern struct inode_operations ll_dir_inode_operations; /* file.c */ extern struct file_operations ll_file_operations; extern struct inode_operations ll_file_inode_operations; extern struct inode_operations ll_special_inode_operations; struct ldlm_lock; int ll_extent_lock_callback(struct ldlm_lock *, struct ldlm_lock_desc *, void *data, int flag); int ll_extent_lock_no_validate(struct ll_file_data *fd, struct inode *inode, struct lov_stripe_md *lsm, int mode, struct ldlm_extent *extent, struct lustre_handle *lockh); int ll_extent_lock(struct ll_file_data *fd, struct inode *inode, struct lov_stripe_md *lsm, int mode, struct ldlm_extent *extent, struct lustre_handle *lockh); int ll_extent_unlock(struct ll_file_data *fd, struct inode *inode, struct lov_stripe_md *lsm, int mode, struct lustre_handle *lockh); int ll_create_objects(struct super_block *sb, obd_id id, uid_t uid, gid_t gid, struct lov_stripe_md **lsmp); int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); /* rw.c */ struct page *ll_getpage(struct inode *inode, unsigned long offset, int create, int locked); void ll_truncate(struct inode *inode); /* super.c */ void ll_update_inode(struct inode *, struct mds_body *, struct lov_stripe_md *); int ll_setattr_raw(struct inode *inode, struct iattr *attr); /* symlink.c */ extern struct inode_operations ll_fast_symlink_inode_operations; extern struct inode_operations ll_symlink_inode_operations; /* sysctl.c */ void ll_sysctl_init(void); void ll_sysctl_clean(void); #else #include #endif /* __KERNEL__ */ static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation, int type) { fid->id = ino; fid->generation = generation; fid->f_type = type; } struct ll_read_inode2_cookie { struct mds_body *lic_body; struct lov_stripe_md *lic_lsm; }; #include #define LL_IOC_GETFLAGS _IOR ('f', 151, long) #define LL_IOC_SETFLAGS _IOW ('f', 152, long) #define LL_IOC_CLRFLAGS _IOW ('f', 153, long) #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long) #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long) #define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */ #define LL_FILE_IGNORE_LOCK 0x00000001 #endif