#ifndef _OBDFS_H
#define OBDFS_H
#include <linux/obd_class.h>
+#include <linux/list.h>
/* super.c */
void obdfs_read_inode(struct inode *inode);
-
-/* file.c */
-ssize_t obdfs_file_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
-
+/* 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 */
-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_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_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);
+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_readdir(struct file * filp, void * dirent, filldir_t filldir);
int obdfs_check_dir_entry (const char * function, struct inode * dir,
- struct ext2_dir_entry_2 * de,
- struct page * page,
- unsigned long offset);
+ 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);
+
+
+/* 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 */
+};
+
+
+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 obd_conn osi_conn;
- struct super_block *osi_super;
- struct obd_device *osi_obd;
- struct obd_ops *osi_ops;
- ino_t osi_rootino; /* which root inode */
- int osi_minor; /* minor of /dev/obdX */
+ 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;
};
-void obdfs_sysctl_init(void);
-void obdfs_sysctl_clean(void);
+struct obdfs_inode_info {
+ int oi_flags;
+ struct list_head oi_inodes;
+ struct list_head oi_pages;
+ char oi_inline[OBD_INLINESZ];
+};
-struct obdfs_inode_info;
+static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
+{
+ return (struct obdfs_inode_info *)&(inode->u.generic_ip);
+}
-extern struct file_operations obdfs_file_ops;
-extern struct inode_operations obdfs_inode_ops;
+static inline struct obdfs_sb_info *obdfs_i2sbi(struct inode *inode)
+{
+ return (struct obdfs_sb_info *) &(inode->i_sb->u.generic_sbp);
+}
-static inline struct obd_ops *iops(struct inode *i)
+static inline struct list_head *obdfs_iplist(struct inode *inode)
{
- struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
- return sbi->osi_ops;
+ struct obdfs_inode_info *info = obdfs_i2info(inode);
+
+ return &info->oi_pages;
}
-static inline struct obd_conn *iid(struct inode *i)
+static inline struct list_head *obdfs_islist(struct inode *inode)
{
- struct obdfs_sb_info *sbi = (struct obdfs_sb_info *) &i->i_sb->u.generic_sbp;
- return &sbi->osi_conn;
+ struct obdfs_inode_info *info = obdfs_i2info(inode);
+
+ return &info->oi_inodes;
}
+static inline struct list_head *obdfs_slist(struct inode *inode)
+{
+ struct obdfs_sb_info *sbi = obdfs_i2sbi(inode);
+
+ return &sbi->osi_inodes;
+}
+
+#define obd_down(mutex) {\
+ CDEBUG(D_INODE, "got lock at %s, %d\n", __FUNCTION__, __LINE__);\
+ down(mutex);\
+}
+
+#define obd_up(mutex) {\
+ up(mutex);\
+ CDEBUG(D_INODE, "free lock at %s, %d\n", __FUNCTION__, __LINE__);\
+}
+
+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); */
+}
+
+void obdfs_sysctl_init(void);
+void obdfs_sysctl_clean(void);
+
+extern struct file_operations obdfs_file_operations;
+extern struct inode_operations obdfs_file_inode_operations;
+extern struct inode_operations obdfs_dir_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);
+}
+
+static void inline obdfs_from_inode(struct obdo *oa, 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 */
+
+static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
+{
+ struct obdfs_inode_info *oinfo = 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);
+
+ 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
git://git.whamcloud.com / fs / lustre-release.git / blobdiff