/* object based disk file system
*
- * This software is licensed under the GPL. See the file COPYING in the
- * top directory of this distribution for details.
+ * This code is issued under the GNU General Public License.
+ * See the file COPYING in this distribution
*
* Copyright (C), 1999, Stelias Computing Inc
*
#ifndef _OBDFS_H
-#define OBDFS_H
+#define _OBDFS_H
#include <linux/obd_class.h>
+#include <linux/obdo.h>
#include <linux/list.h>
-
-
+/* super.c */
struct obdfs_pgrq {
struct list_head rq_plist; /* linked list of req's */
unsigned long rq_jiffies;
struct page *rq_page; /* page to be written */
};
-struct list_head obdfs_super_list; /* list of all OBDFS superblocks */
-
-struct obdfs_sb_info {
- struct list_head osi_list; /* list of supers */
- struct obd_conn osi_conn;
- struct super_block *osi_super;
- struct obd_device *osi_obd;
- struct obd_ops *osi_ops;
- ino_t osi_rootino; /* number of root inode */
- int osi_minor; /* minor of /dev/obdX */
- struct list_head osi_inodes; /* list of dirty inodes */
- unsigned long osi_cache_count;
- struct semaphore osi_list_mutex;
-};
+extern struct list_head obdfs_super_list; /* list of all OBDFS superblocks */
+
-struct obdfs_inode_info {
- int oi_flags;
- struct list_head oi_inodes;
- struct list_head oi_pages;
- char oi_inline[OBD_INLINESZ];
-};
/* dir.c */
-#define EXT2_DIR_PAD 4
-#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
-#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
- ~EXT2_DIR_ROUND)
-#define EXT2_NAME_LEN 255
-struct ext2_dir_entry_2 {
- __u32 inode; /* Inode number */
- __u16 rec_len; /* Directory entry length */
- __u8 name_len; /* Name length */
- __u8 file_type;
- char name[EXT2_NAME_LEN]; /* File name */
-};
-int obdfs_check_dir_entry (const char * function, struct inode * dir,
- struct ext2_dir_entry_2 * de, struct page * page,
- unsigned long offset);
extern struct file_operations obdfs_dir_operations;
extern struct inode_operations obdfs_dir_inode_operations;
int obdfs_flush_dirty_pages(unsigned long check_time);
/* namei.c */
-/*
- * Structure of the super block
- */
-struct ext2_super_block {
- __u32 s_inodes_count; /* Inodes count */
- __u32 s_blocks_count; /* Blocks count */
- __u32 s_r_blocks_count; /* Reserved blocks count */
- __u32 s_free_blocks_count; /* Free blocks count */
- __u32 s_free_inodes_count; /* Free inodes count */
- __u32 s_first_data_block; /* First Data Block */
- __u32 s_log_block_size; /* Block size */
- __s32 s_log_frag_size; /* Fragment size */
- __u32 s_blocks_per_group; /* # Blocks per group */
- __u32 s_frags_per_group; /* # Fragments per group */
- __u32 s_inodes_per_group; /* # Inodes per group */
- __u32 s_mtime; /* Mount time */
- __u32 s_wtime; /* Write time */
- __u16 s_mnt_count; /* Mount count */
- __s16 s_max_mnt_count; /* Maximal mount count */
- __u16 s_magic; /* Magic signature */
- __u16 s_state; /* File system state */
- __u16 s_errors; /* Behaviour when detecting errors */
- __u16 s_minor_rev_level; /* minor revision level */
- __u32 s_lastcheck; /* time of last check */
- __u32 s_checkinterval; /* max. time between checks */
- __u32 s_creator_os; /* OS */
- __u32 s_rev_level; /* Revision level */
- __u16 s_def_resuid; /* Default uid for reserved blocks */
- __u16 s_def_resgid; /* Default gid for reserved blocks */
- /*
- * These fields are for EXT2_DYNAMIC_REV superblocks only.
- *
- * Note: the difference between the compatible feature set and
- * the incompatible feature set is that if there is a bit set
- * in the incompatible feature set that the kernel doesn't
- * know about, it should refuse to mount the filesystem.
- *
- * e2fsck's requirements are more strict; if it doesn't know
- * about a feature in either the compatible or incompatible
- * feature set, it must abort and not try to meddle with
- * things it doesn't understand...
- */
- __u32 s_first_ino; /* First non-reserved inode */
- __u16 s_inode_size; /* size of inode structure */
- __u16 s_block_group_nr; /* block group # of this superblock */
- __u32 s_feature_compat; /* compatible feature set */
- __u32 s_feature_incompat; /* incompatible feature set */
- __u32 s_feature_ro_compat; /* readonly-compatible feature set */
- __u8 s_uuid[16]; /* 128-bit uuid for volume */
- char s_volume_name[16]; /* volume name */
- char s_last_mounted[64]; /* directory where last mounted */
- __u32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT2_COMPAT_PREALLOC flag is on.
- */
- __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
- __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __u16 s_padding1;
- __u32 s_reserved[204]; /* Padding to the end of the block */
-};
-
-#define EXT2_SB(sb) (&((sb)->u.ext2_sb))
-/*
- * Maximal count of links to a file
- */
-#define EXT2_LINK_MAX 32000
-/*
- * Ext2 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
-#define EXT2_FT_UNKNOWN 0
-#define EXT2_FT_REG_FILE 1
-#define EXT2_FT_DIR 2
-#define EXT2_FT_CHRDEV 3
-#define EXT2_FT_BLKDEV 4
-#define EXT2_FT_FIFO 5
-#define EXT2_FT_SOCK 6
-#define EXT2_FT_SYMLINK 7
-
-#define EXT2_FT_MAX 8
-
-#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
-#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
-#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
-
-
-struct dentry *obdfs_lookup(struct inode * dir, struct dentry *dentry);
-int obdfs_create (struct inode * dir, struct dentry * dentry, int mode);
-int obdfs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
-int obdfs_rmdir(struct inode *dir, struct dentry *dentry);
-int obdfs_unlink(struct inode *dir, struct dentry *dentry);
-int obdfs_mknod(struct inode *dir, struct dentry *dentry, int mode, int rdev);
-int obdfs_symlink(struct inode *dir, struct dentry *dentry,
- const char *symname);
-int obdfs_link(struct dentry *old_dentry, struct inode *dir,
- struct dentry *dentry);
-int obdfs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry);
/* rw.c */
int obdfs_do_writepage(struct page *, int sync);
void obdfs_cleanup_pgrqcache(void);
inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
int obdfs_readpage(struct file *file, struct page *page);
+int obdfs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to);
+int obdfs_commit_write(struct file *file, struct page *page, unsigned from, unsigned to);
int obdfs_writepage(struct page *page);
struct page *obdfs_getpage(struct inode *inode, unsigned long offset,
int create, int locked);
void obdfs_sysctl_init(void);
void obdfs_sysctl_clean(void);
-
-static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
-{
- return (struct obdfs_inode_info *)&(inode->u.generic_ip);
-}
-
static inline struct obdfs_sb_info *obdfs_i2sbi(struct inode *inode)
{
return (struct obdfs_sb_info *) &(inode->i_sb->u.generic_sbp);
return &sbi->osi_inodes;
}
+static void inline obdfs_set_size (struct inode *inode, obd_size size)
+{
+ inode->i_size = size;
+ inode->i_blocks = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits;
+} /* obdfs_set_size */
+
+
+#if 0 /* PAGE CACHE DISABLED */
+
#define obd_down(mutex) { \
/* CDEBUG(D_INFO, "get lock\n"); */ \
obdfs_mutex_start = jiffies; \
CDEBUG(D_INFO, "\n");
/* obd_up(&obdfs_i2sbi(inode)->osi_list_mutex); */
}
-
-static inline int obdfs_has_inline(struct inode *inode)
-{
- return (obdfs_i2info(inode)->oi_flags & OBD_FL_INLINEDATA);
-}
-
-static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
-{
- struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
-
- CDEBUG(D_INFO, "src inode %ld, dst obdo %ld valid 0x%08x\n",
- inode->i_ino, (long)oa->o_id, oa->o_valid);
- obdo_from_inode(oa, inode);
- if (obdfs_has_inline(inode)) {
- CDEBUG(D_INODE, "copying inline data from inode to obdo\n");
- memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
- oa->o_obdflags |= OBD_FL_INLINEDATA;
- oa->o_valid |= OBD_MD_FLINLINE;
- }
-} /* obdfs_from_inode */
-
-static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
-{
- struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
-
- CDEBUG(D_INFO, "src obdo %ld valid 0x%08x, dst inode %ld\n",
- (long)oa->o_id, oa->o_valid, inode->i_ino);
-
- obdo_to_inode(inode, oa);
-
- if (obdo_has_inline(oa)) {
- CDEBUG(D_INODE, "copying inline data from obdo to inode\n");
- memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
- oinfo->oi_flags |= OBD_FL_INLINEDATA;
- }
-} /* obdfs_to_inode */
-
-#define NOLOCK 0
-#define LOCKED 1
-
-#ifdef OPS
-#warning "*** WARNING redefining OPS"
-#else
-#define OPS(sb,op) ((struct obdfs_sb_info *)(& ## sb ## ->u.generic_sbp))->osi_ops->o_ ## op
-#define IOPS(inode,op) ((struct obdfs_sb_info *)(& ## inode->i_sb ## ->u.generic_sbp))->osi_ops->o_ ## op
-#endif
-
-#ifdef ID
-#warning "*** WARNING redefining ID"
-#else
-#define ID(sb) (&((struct obdfs_sb_info *)( & ## sb ## ->u.generic_sbp))->osi_conn)
-#define IID(inode) (&((struct obdfs_sb_info *)( & ## inode->i_sb ## ->u.generic_sbp))->osi_conn)
#endif
-#define OBDFS_SUPER_MAGIC 0x4711
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff