diff options
Diffstat (limited to 'fs/exofs/exofs.h')
| -rw-r--r-- | fs/exofs/exofs.h | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h deleted file mode 100644 index 5dc392404559..000000000000 --- a/fs/exofs/exofs.h +++ /dev/null @@ -1,240 +0,0 @@ -/* - * Copyright (C) 2005, 2006 - * Avishay Traeger (avishay@gmail.com) - * Copyright (C) 2008, 2009 - * Boaz Harrosh <ooo@electrozaur.com> - * - * Copyrights for code taken from ext2: - * Copyright (C) 1992, 1993, 1994, 1995 - * Remy Card (card@masi.ibp.fr) - * Laboratoire MASI - Institut Blaise Pascal - * Universite Pierre et Marie Curie (Paris VI) - * from - * linux/fs/minix/inode.c - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is part of exofs. - * - * exofs is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation. Since it is based on ext2, and the only - * valid version of GPL for the Linux kernel is version 2, the only valid - * version of GPL for exofs is version 2. - * - * exofs is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with exofs; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __EXOFS_H__ -#define __EXOFS_H__ - -#include <linux/fs.h> -#include <linux/time.h> -#include <linux/backing-dev.h> -#include <scsi/osd_ore.h> - -#include "common.h" - -#define EXOFS_ERR(fmt, a...) printk(KERN_ERR "exofs: " fmt, ##a) - -#ifdef CONFIG_EXOFS_DEBUG -#define EXOFS_DBGMSG(fmt, a...) \ - printk(KERN_NOTICE "exofs @%s:%d: " fmt, __func__, __LINE__, ##a) -#else -#define EXOFS_DBGMSG(fmt, a...) \ - do { if (0) printk(fmt, ##a); } while (0) -#endif - -/* u64 has problems with printk this will cast it to unsigned long long */ -#define _LLU(x) (unsigned long long)(x) - -struct exofs_dev { - struct ore_dev ored; - unsigned did; - unsigned urilen; - uint8_t *uri; - struct kobject ed_kobj; -}; -/* - * our extension to the in-memory superblock - */ -struct exofs_sb_info { - struct exofs_sb_stats s_ess; /* Written often, pre-allocate*/ - int s_timeout; /* timeout for OSD operations */ - uint64_t s_nextid; /* highest object ID used */ - uint32_t s_numfiles; /* number of files on fs */ - spinlock_t s_next_gen_lock; /* spinlock for gen # update */ - u32 s_next_generation; /* next gen # to use */ - atomic_t s_curr_pending; /* number of pending commands */ - - struct ore_layout layout; /* Default files layout */ - struct ore_comp one_comp; /* id & cred of partition id=0*/ - struct ore_components oc; /* comps for the partition */ - struct kobject s_kobj; /* holds per-sbi kobject */ -}; - -/* - * our extension to the in-memory inode - */ -struct exofs_i_info { - struct inode vfs_inode; /* normal in-memory inode */ - wait_queue_head_t i_wq; /* wait queue for inode */ - unsigned long i_flags; /* various atomic flags */ - uint32_t i_data[EXOFS_IDATA];/*short symlink names and device #s*/ - uint32_t i_dir_start_lookup; /* which page to start lookup */ - uint64_t i_commit_size; /* the object's written length */ - struct ore_comp one_comp; /* same component for all devices */ - struct ore_components oc; /* inode view of the device table */ -}; - -static inline osd_id exofs_oi_objno(struct exofs_i_info *oi) -{ - return oi->vfs_inode.i_ino + EXOFS_OBJ_OFF; -} - -/* - * our inode flags - */ -#define OBJ_2BCREATED 0 /* object will be created soon*/ -#define OBJ_CREATED 1 /* object has been created on the osd*/ - -static inline int obj_2bcreated(struct exofs_i_info *oi) -{ - return test_bit(OBJ_2BCREATED, &oi->i_flags); -} - -static inline void set_obj_2bcreated(struct exofs_i_info *oi) -{ - set_bit(OBJ_2BCREATED, &oi->i_flags); -} - -static inline int obj_created(struct exofs_i_info *oi) -{ - return test_bit(OBJ_CREATED, &oi->i_flags); -} - -static inline void set_obj_created(struct exofs_i_info *oi) -{ - set_bit(OBJ_CREATED, &oi->i_flags); -} - -int __exofs_wait_obj_created(struct exofs_i_info *oi); -static inline int wait_obj_created(struct exofs_i_info *oi) -{ - if (likely(obj_created(oi))) - return 0; - - return __exofs_wait_obj_created(oi); -} - -/* - * get to our inode from the vfs inode - */ -static inline struct exofs_i_info *exofs_i(struct inode *inode) -{ - return container_of(inode, struct exofs_i_info, vfs_inode); -} - -/* - * Maximum count of links to a file - */ -#define EXOFS_LINK_MAX 32000 - -/************************* - * function declarations * - *************************/ - -/* inode.c */ -unsigned exofs_max_io_pages(struct ore_layout *layout, - unsigned expected_pages); -int exofs_setattr(struct dentry *, struct iattr *); -int exofs_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata); -extern struct inode *exofs_iget(struct super_block *, unsigned long); -struct inode *exofs_new_inode(struct inode *, umode_t); -extern int exofs_write_inode(struct inode *, struct writeback_control *wbc); -extern void exofs_evict_inode(struct inode *); - -/* dir.c: */ -int exofs_add_link(struct dentry *, struct inode *); -ino_t exofs_inode_by_name(struct inode *, struct dentry *); -int exofs_delete_entry(struct exofs_dir_entry *, struct page *); -int exofs_make_empty(struct inode *, struct inode *); -struct exofs_dir_entry *exofs_find_entry(struct inode *, struct dentry *, - struct page **); -int exofs_empty_dir(struct inode *); -struct exofs_dir_entry *exofs_dotdot(struct inode *, struct page **); -ino_t exofs_parent_ino(struct dentry *child); -int exofs_set_link(struct inode *, struct exofs_dir_entry *, struct page *, - struct inode *); - -/* super.c */ -void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], - const struct osd_obj_id *obj); -int exofs_sbi_write_stats(struct exofs_sb_info *sbi); - -/* sys.c */ -int exofs_sysfs_init(void); -void exofs_sysfs_uninit(void); -int exofs_sysfs_sb_add(struct exofs_sb_info *sbi, - struct exofs_dt_device_info *dt_dev); -void exofs_sysfs_sb_del(struct exofs_sb_info *sbi); -int exofs_sysfs_odev_add(struct exofs_dev *edev, - struct exofs_sb_info *sbi); -void exofs_sysfs_dbg_print(void); - -/********************* - * operation vectors * - *********************/ -/* dir.c: */ -extern const struct file_operations exofs_dir_operations; - -/* file.c */ -extern const struct inode_operations exofs_file_inode_operations; -extern const struct file_operations exofs_file_operations; - -/* inode.c */ -extern const struct address_space_operations exofs_aops; - -/* namei.c */ -extern const struct inode_operations exofs_dir_inode_operations; -extern const struct inode_operations exofs_special_inode_operations; - -/* exofs_init_comps will initialize an ore_components device array - * pointing to a single ore_comp struct, and a round-robin view - * of the device table. - * The first device of each inode is the [inode->ino % num_devices] - * and the rest of the devices sequentially following where the - * first device is after the last device. - * It is assumed that the global device array at @sbi is twice - * bigger and that the device table repeats twice. - * See: exofs_read_lookup_dev_table() - */ -static inline void exofs_init_comps(struct ore_components *oc, - struct ore_comp *one_comp, - struct exofs_sb_info *sbi, osd_id oid) -{ - unsigned dev_mod = (unsigned)oid, first_dev; - - one_comp->obj.partition = sbi->one_comp.obj.partition; - one_comp->obj.id = oid; - exofs_make_credential(one_comp->cred, &one_comp->obj); - - oc->first_dev = 0; - oc->numdevs = sbi->layout.group_width * sbi->layout.mirrors_p1 * - sbi->layout.group_count; - oc->single_comp = EC_SINGLE_COMP; - oc->comps = one_comp; - - /* Round robin device view of the table */ - first_dev = (dev_mod * sbi->layout.mirrors_p1) % sbi->oc.numdevs; - oc->ods = &sbi->oc.ods[first_dev]; -} - -#endif |