diff options
Diffstat (limited to 'fs/exofs/exofs.h')
| -rw-r--r-- | fs/exofs/exofs.h | 97 |
1 files changed, 81 insertions, 16 deletions
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h index 0fd4c785967..fffe86fd7a4 100644 --- a/fs/exofs/exofs.h +++ b/fs/exofs/exofs.h @@ -1,8 +1,6 @@ /* * Copyright (C) 2005, 2006 - * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com) - * Copyright (C) 2005, 2006 - * International Business Machines + * Avishay Traeger (avishay@gmail.com) * Copyright (C) 2008, 2009 * Boaz Harrosh <bharrosh@panasas.com> * @@ -32,13 +30,15 @@ * 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 "common.h" +#include <linux/backing-dev.h> +#include <scsi/osd_ore.h> -#ifndef __EXOFS_H__ -#define __EXOFS_H__ +#include "common.h" #define EXOFS_ERR(fmt, a...) printk(KERN_ERR "exofs: " fmt, ##a) @@ -53,34 +53,51 @@ /* 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 osd_dev *s_dev; /* returned by get_osd_dev */ - osd_id s_pid; /* partition ID of file system*/ + struct backing_dev_info bdi; /* register our bdi with VFS */ + 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 */ - uint8_t s_cred[OSD_CAP_LEN]; /* all-powerful credential */ + + 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 */ - wait_queue_head_t i_wq; /* wait queue for inode */ uint64_t i_commit_size; /* the object's written length */ - uint8_t i_cred[OSD_CAP_LEN];/* all-powerful credential */ - struct inode vfs_inode; /* normal in-memory inode */ + 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 */ @@ -132,16 +149,18 @@ static inline struct exofs_i_info *exofs_i(struct inode *inode) /************************* * function declarations * *************************/ + /* inode.c */ -void exofs_truncate(struct inode *inode); +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 *, int); -extern int exofs_write_inode(struct inode *, int); -extern void exofs_delete_inode(struct inode *); +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 *); @@ -156,6 +175,21 @@ 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 * *********************/ @@ -177,4 +211,35 @@ extern const struct inode_operations exofs_special_inode_operations; extern const struct inode_operations exofs_symlink_inode_operations; extern const struct inode_operations exofs_fast_symlink_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 |