#ifndef _OBDFS_H
-#define OBDFS_H
+#define _OBDFS_H
#include <linux/obd_class.h>
-#include <linux/obdo.h>
#include <linux/list.h>
+static inline struct obdo *obdo_fromid(struct lustre_handle *conn, obd_id id,
+ obd_mode mode, obd_flag valid)
+{
+ struct obdo *oa;
+ int err;
+
+ ENTRY;
+ oa = obdo_alloc();
+ if ( !oa ) {
+ RETURN(ERR_PTR(-ENOMEM));
+ }
+
+ oa->o_id = id;
+ oa->o_mode = mode;
+ oa->o_valid = valid;
+ if ((err = obd_getattr(conn, oa))) {
+ obdo_free(oa);
+ RETURN(ERR_PTR(err));
+ }
+ RETURN(oa);
+}
+
+
+struct obdfs_inode_info {
+ int oi_flags;
+ struct list_head oi_inodes;
+ struct list_head oi_pages;
+ char oi_inline[OBD_INLINESZ];
+};
+
+struct obdfs_sb_info {
+ struct list_head osi_list; /* list of supers */
+ struct lustre_handle osi_conn;
+ struct super_block *osi_super;
+ struct obd_device *osi_obd;
+ 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;
+};
+
+
+static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
+{
+ return (struct obdfs_inode_info *)&(inode->u.generic_ip);
+}
+
+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 (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
+ CDEBUG(D_INODE, "copying device %x from inode to obdo\n",
+ inode->i_rdev);
+ *((obd_rdev *)oa->o_inline) = kdev_t_to_nr(inode->i_rdev);
+ oa->o_obdflags |= OBD_FL_INLINEDATA;
+ oa->o_valid |= OBD_MD_FLINLINE;
+ } else 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 (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
+ S_ISFIFO(inode->i_mode)) {
+ obd_rdev rdev = *((obd_rdev *)oa->o_inline);
+ init_special_inode(inode, inode->i_mode, rdev);
+ }
+ if (obdo_has_inline(oa)) {
+ CDEBUG(D_INFO, "copying inline 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
/* super.c */
struct obdfs_pgrq {
struct page *rq_page; /* page to be written */
};
-struct list_head obdfs_super_list; /* list of all OBDFS superblocks */
+extern struct list_head obdfs_super_list; /* list of all OBDFS superblocks */
/* 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
-#if 0
-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 */
-};
-#endif
-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
- */
-
-#if 0
-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 */
-};
-#endif
-
-#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) )
/* rw.c */
int obdfs_do_writepage(struct page *, int sync);
inode->i_size = size;
inode->i_blocks = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
inode->i_sb->s_blocksize_bits;
- inode->i_bytes = inode->i_size &
- ((1 << inode->i_sb->s_blocksize_bits) - 1);
} /* obdfs_set_size */
-
-
-#define obd_down(mutex) { \
- /* CDEBUG(D_INFO, "get lock\n"); */ \
- obdfs_mutex_start = jiffies; \
- down(mutex); \
- if (jiffies - obdfs_mutex_start) \
- CDEBUG(D_CACHE, "waited on mutex %ld jiffies\n", \
- jiffies - obdfs_mutex_start); \
-}
-
-#define obd_up(mutex) { \
- up(mutex); \
- if (jiffies - obdfs_mutex_start > 1) \
- CDEBUG(D_CACHE, "held mutex for %ld jiffies\n", \
- jiffies - obdfs_mutex_start); \
- /* CDEBUG(D_INFO, "free lock\n"); */ \
-}
-
-/* We track if a page has been added to the OBD page cache by stting a
- * flag on the page. We have chosen a bit that will hopefully not be
- * used for a while.
- */
-#define PG_obdcache 29
-#define OBDAddCachePage(page) test_and_set_bit(PG_obdcache, &(page)->flags)
-#define OBDClearCachePage(page) clear_bit(PG_obdcache, &(page)->flags)
-
-static inline void obdfs_print_plist(struct inode *inode)
-{
- struct list_head *page_list = obdfs_iplist(inode);
- struct list_head *tmp;
-
- CDEBUG(D_INFO, "inode %ld: page", inode->i_ino);
- /* obd_down(&obdfs_i2sbi(inode)->osi_list_mutex); */
- if (list_empty(page_list)) {
- CDEBUG(D_INFO, " list empty\n");
- obd_up(&obdfs_i2sbi(inode)->osi_list_mutex);
- return;
- }
-
- tmp = page_list;
- while ( (tmp = tmp->next) != page_list) {
- struct obdfs_pgrq *pgrq;
- pgrq = list_entry(tmp, struct obdfs_pgrq, rq_plist);
- CDEBUG(D_INFO, " %p", pgrq->rq_page);
- }
- CDEBUG(D_INFO, "\n");
- /* obd_up(&obdfs_i2sbi(inode)->osi_list_mutex); */
-}
-#include <linux/obdo.h>
-
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff