/* 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/list.h>
-/* super.c */
-void obdfs_read_inode(struct inode *inode);
-
-/* flush.c */
-int obdfs_flushd_init(void);
-int obdfs_flushd_cleanup(void);
-int obdfs_flush_reqs(struct list_head *inode_list, int check_time);
-void obdfs_flush_dirty_pages(int check_time);
-
-/* rw.c */
-int obdfs_do_writepage(struct inode *, struct page *, int sync);
-int obdfs_init_pgrqcache(void);
-void obdfs_cleanup_pgrqcache(void);
-int obdfs_readpage(struct dentry *dentry, struct page *page);
-int obdfs_writepage(struct dentry *dentry, struct page *page);
-struct page *obdfs_getpage(struct inode *inode, unsigned long offset,
- int create, int locked);
-int obdfs_write_one_page(struct file *file, struct page *page,
- unsigned long offset, unsigned long bytes,
- const char * buf);
-void obdfs_dequeue_reqs(struct inode *inode);
-
-/* namei.c */
-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);
-
-/* dir.c */
-int obdfs_check_dir_entry (const char * function, struct inode * dir,
- struct ext2_dir_entry_2 * de, struct page * page,
- unsigned long offset);
-
-/* symlink.c */
-int obdfs_readlink (struct dentry *, char *, int);
-struct dentry *obdfs_follow_link(struct dentry *, struct dentry *,
- unsigned int);
-
+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);
+}
-/* list of all OBDFS super blocks */
-struct list_head obdfs_super_list;
-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 obdfs_inode_info {
+ int oi_flags;
+ struct list_head oi_inodes;
+ struct list_head oi_pages;
+ char oi_inline[OBD_INLINESZ];
};
-
-inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
-int obdfs_do_vec_wr(struct inode **inodes, obd_count num_io, obd_count num_oa,
- struct obdo **obdos, obd_count *oa_bufs,
- struct page **pages, char **bufs, obd_size *counts,
- obd_off *offsets, obd_flag *flags);
-
-
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 */
- struct semaphore osi_list_mutex;
+ 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;
};
-struct obdfs_inode_info {
- int oi_flags;
- struct list_head oi_inodes;
- struct list_head oi_pages;
- char oi_inline[OBD_INLINESZ];
-};
static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
{
- return (struct obdfs_inode_info *)&(inode->u.generic_ip);
+ return (struct obdfs_inode_info *)&(inode->u.generic_ip);
}
-static inline struct obdfs_sb_info *obdfs_i2sbi(struct inode *inode)
+static inline int obdfs_has_inline(struct inode *inode)
{
- return (struct obdfs_sb_info *) &(inode->i_sb->u.generic_sbp);
+ return (obdfs_i2info(inode)->oi_flags & OBD_FL_INLINEDATA);
}
-static inline struct list_head *obdfs_iplist(struct inode *inode)
+static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
{
- struct obdfs_inode_info *info = obdfs_i2info(inode);
-
- return &info->oi_pages;
-}
+ 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 inline struct list_head *obdfs_islist(struct inode *inode)
+static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
{
- struct obdfs_inode_info *info = obdfs_i2info(inode);
+ 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 */
- return &info->oi_inodes;
-}
+#define NOLOCK 0
+#define LOCKED 1
-static inline struct list_head *obdfs_slist(struct inode *inode)
-{
- struct obdfs_sb_info *sbi = obdfs_i2sbi(inode);
+#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
- return &sbi->osi_inodes;
-}
+#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 obd_down(mutex) {\
- CDEBUG(D_INODE, "got lock at %s, %d\n", __FUNCTION__, __LINE__);\
- down(mutex);\
-}
+#define OBDFS_SUPER_MAGIC 0x4711
-#define obd_up(mutex) {\
- up(mutex);\
- CDEBUG(D_INODE, "free lock at %s, %d\n", __FUNCTION__, __LINE__);\
-}
+/* 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 */
+};
-static inline void obdfs_print_plist(struct inode *inode)
-{
- struct list_head *page_list = obdfs_iplist(inode);
- struct list_head *tmp;
-
- CDEBUG(D_INODE, "inode %ld: page", inode->i_ino);
- /* obd_down(&obdfs_i2sbi(inode)->osi_list_mutex); */
- if (list_empty(page_list)) {
- printk(" 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);
- printk(" %p", pgrq->rq_page);
- }
- printk("\n");
- /* obd_up(&obdfs_i2sbi(inode)->osi_list_mutex); */
-}
+extern struct list_head obdfs_super_list; /* list of all OBDFS superblocks */
-void obdfs_sysctl_init(void);
-void obdfs_sysctl_clean(void);
+
+/* dir.c */
+extern struct file_operations obdfs_dir_operations;
+extern struct inode_operations obdfs_dir_inode_operations;
+
+/* file.c */
extern struct file_operations obdfs_file_operations;
extern struct inode_operations obdfs_file_inode_operations;
-extern struct inode_operations obdfs_dir_inode_operations;
+
+/* flush.c */
+void obdfs_dequeue_pages(struct inode *inode);
+int obdfs_flushd_init(void);
+int obdfs_flushd_cleanup(void);
+int obdfs_flush_reqs(struct list_head *inode_list, unsigned long check_time);
+int obdfs_flush_dirty_pages(unsigned long check_time);
+
+/* namei.c */
+
+/* rw.c */
+int obdfs_do_writepage(struct page *, int sync);
+int obdfs_init_pgrqcache(void);
+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);
+int obdfs_write_one_page(struct file *file, struct page *page,
+ unsigned long offset, unsigned long bytes,
+ const char * buf);
+int obdfs_do_vec_wr(struct inode **inodes, obd_count num_io, obd_count num_oa,
+ struct obdo **obdos, obd_count *oa_bufs,
+ struct page **pages, char **bufs, obd_size *counts,
+ obd_off *offsets, obd_flag *flags);
+void obdfs_truncate(struct inode *inode);
+
+/* super.c */
+extern long obdfs_cache_count;
+extern long obdfs_mutex_start;
+
+/* symlink.c */
+extern struct inode_operations obdfs_fast_symlink_inode_operations;
extern struct inode_operations obdfs_symlink_inode_operations;
-static inline int obdfs_has_inline(struct inode *inode)
-{
- return (obdfs_i2info(inode)->oi_flags & OBD_FL_INLINEDATA);
-}
+/* sysctl.c */
+void obdfs_sysctl_init(void);
+void obdfs_sysctl_clean(void);
-static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
+static inline struct obdfs_sb_info *obdfs_i2sbi(struct inode *inode)
{
- struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
-
- CDEBUG(D_INODE, "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 */
+ return (struct obdfs_sb_info *) &(inode->i_sb->u.generic_sbp);
+}
-static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
+static inline struct list_head *obdfs_iplist(struct inode *inode)
{
- struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
+ struct obdfs_inode_info *info = obdfs_i2info(inode);
- CDEBUG(D_INODE, "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);
+ return &info->oi_pages;
+}
- 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 */
+static inline struct list_head *obdfs_islist(struct inode *inode)
+{
+ struct obdfs_inode_info *info = obdfs_i2info(inode);
-#define NOLOCK 0
-#define LOCKED 1
+ return &info->oi_inodes;
+}
-#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
+static inline struct list_head *obdfs_slist(struct inode *inode)
+{
+ struct obdfs_sb_info *sbi = obdfs_i2sbi(inode);
-#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
+ return &sbi->osi_inodes;
+}
-#define OBDFS_SUPER_MAGIC 0x4711
+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 */
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff