diff options
Diffstat (limited to 'fs/exofs/exofs.h')
| -rw-r--r-- | fs/exofs/exofs.h | 97 |
1 files changed, 93 insertions, 4 deletions
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h index 5ec72e020b22..c35fd4623986 100644 --- a/fs/exofs/exofs.h +++ b/fs/exofs/exofs.h @@ -30,13 +30,17 @@ * 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" -#ifndef __EXOFS_H__ -#define __EXOFS_H__ +/* FIXME: Remove once pnfs hits mainline + * #include <linux/exportfs/pnfs_osd_xdr.h> + */ +#include "pnfs.h" #define EXOFS_ERR(fmt, a...) printk(KERN_ERR "exofs: " fmt, ##a) @@ -55,7 +59,7 @@ * our extension to the in-memory superblock */ struct exofs_sb_info { - struct osd_dev *s_dev; /* returned by get_osd_dev */ + struct exofs_fscb s_fscb; /* Written often, pre-allocate*/ osd_id s_pid; /* partition ID of file system*/ int s_timeout; /* timeout for OSD operations */ uint64_t s_nextid; /* highest object ID used */ @@ -63,7 +67,11 @@ struct exofs_sb_info { 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 */ + uint8_t s_cred[OSD_CAP_LEN]; /* credential for the fscb */ + + struct pnfs_osd_data_map data_map; /* Default raid to use */ + unsigned s_numdevs; /* Num of devices in array */ + struct osd_dev *s_ods[1]; /* Variable length, minimum 1 */ }; /* @@ -79,6 +87,50 @@ struct exofs_i_info { struct inode vfs_inode; /* normal in-memory inode */ }; +static inline osd_id exofs_oi_objno(struct exofs_i_info *oi) +{ + return oi->vfs_inode.i_ino + EXOFS_OBJ_OFF; +} + +struct exofs_io_state; +typedef void (*exofs_io_done_fn)(struct exofs_io_state *or, void *private); + +struct exofs_io_state { + struct kref kref; + + void *private; + exofs_io_done_fn done; + + struct exofs_sb_info *sbi; + struct osd_obj_id obj; + u8 *cred; + + /* Global read/write IO*/ + loff_t offset; + unsigned long length; + void *kern_buff; + struct bio *bio; + + /* Attributes */ + unsigned in_attr_len; + struct osd_attr *in_attr; + unsigned out_attr_len; + struct osd_attr *out_attr; + + /* Variable array of size numdevs */ + unsigned numdevs; + struct exofs_per_dev_state { + struct osd_request *or; + struct bio *bio; + } per_dev[]; +}; + +static inline unsigned exofs_io_state_size(unsigned numdevs) +{ + return sizeof(struct exofs_io_state) + + sizeof(struct exofs_per_dev_state) * numdevs; +} + /* * our inode flags */ @@ -130,6 +182,42 @@ static inline struct exofs_i_info *exofs_i(struct inode *inode) /************************* * function declarations * *************************/ + +/* ios.c */ +void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], + const struct osd_obj_id *obj); +int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj, + u64 offset, void *p, unsigned length); + +int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** ios); +void exofs_put_io_state(struct exofs_io_state *ios); + +int exofs_check_io(struct exofs_io_state *ios, u64 *resid); + +int exofs_sbi_create(struct exofs_io_state *ios); +int exofs_sbi_remove(struct exofs_io_state *ios); +int exofs_sbi_write(struct exofs_io_state *ios); +int exofs_sbi_read(struct exofs_io_state *ios); + +int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr); + +int exofs_oi_truncate(struct exofs_i_info *oi, u64 new_len); +static inline int exofs_oi_write(struct exofs_i_info *oi, + struct exofs_io_state *ios) +{ + ios->obj.id = exofs_oi_objno(oi); + ios->cred = oi->i_cred; + return exofs_sbi_write(ios); +} + +static inline int exofs_oi_read(struct exofs_i_info *oi, + struct exofs_io_state *ios) +{ + ios->obj.id = exofs_oi_objno(oi); + ios->cred = oi->i_cred; + return exofs_sbi_read(ios); +} + /* inode.c */ void exofs_truncate(struct inode *inode); int exofs_setattr(struct dentry *, struct iattr *); @@ -169,6 +257,7 @@ extern const struct file_operations exofs_file_operations; /* inode.c */ extern const struct address_space_operations exofs_aops; +extern const struct osd_attr g_attr_logical_length; /* namei.c */ extern const struct inode_operations exofs_dir_inode_operations; |