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[fs/lustre-release.git] / lustre / include / linux / lustre_fsfilt.h
index d83e149..8b9b235 100644 (file)
@@ -1,7 +1,7 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- *  Copyright (C) 2001-2004 Cluster File Systems, Inc. <info@clusterfs.com>
+ *  Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
  *
  *   This file is part of Lustre, http://www.lustre.org.
  *
@@ -28,7 +28,6 @@
 #ifdef __KERNEL__
 
 #include <linux/obd.h>
-#include <linux/lustre_log.h>
 #include <linux/obd_class.h>
 
 typedef void (*fsfilt_cb_t)(struct obd_device *obd, __u64 last_rcvd,
@@ -59,43 +58,27 @@ struct fsfilt_operations {
         int     (* fs_set_md)(struct inode *inode, void *handle, void *md,
                               int size);
         int     (* fs_get_md)(struct inode *inode, void *md, int size);
-
-        /* this method is needed to make IO operation fsfilt nature depend. */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-        int     (* fs_send_bio)(struct inode *inode, struct bio *bio);
-#else
-        int     (* fs_send_bio)(struct inode *inode, struct kiobuf *bio);
-#endif
-
-        /* methods for getting page from backing fs and putting page there
-         * during IO. Used on OST. */
-        int (* fs_putpage)(struct inode *inode, struct page *page);
-        struct page *(* fs_getpage)(struct inode *inode, long int index);
-
         ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
                                 loff_t *offset);
-        int     (* fs_add_journal_cb)(struct obd_device *obd, struct super_block *sb,
-                                      __u64 last_rcvd, void *handle, fsfilt_cb_t cb_func,
+        int     (* fs_add_journal_cb)(struct obd_device *obd, __u64 last_rcvd,
+                                      void *handle, fsfilt_cb_t cb_func,
                                       void *cb_data);
         int     (* fs_statfs)(struct super_block *sb, struct obd_statfs *osfs);
         int     (* fs_sync)(struct super_block *sb);
-        int     (* fs_map_inode_pages)(struct inode *inode, struct page **page,
-                                       int pages, unsigned long *blocks,
-                                       int *created, int create,
-                                       struct semaphore *sem);
+        int     (* fs_map_inode_page)(struct inode *inode, struct page *page,
+                                      unsigned long *blocks, int *created,
+                                      int create);
         int     (* fs_prep_san_write)(struct inode *inode, long *blocks,
                                       int nblocks, loff_t newsize);
         int     (* fs_write_record)(struct file *, void *, int size, loff_t *,
                                     int force_sync);
         int     (* fs_read_record)(struct file *, void *, int size, loff_t *);
-        int     (* fs_setup)(struct super_block *sb);
-
-        int     (* fs_set_xattr)(struct inode *inode, void *handle, char *name,
-                                 void *buffer, int buffer_size);
-        int     (* fs_get_xattr)(struct inode *inode, char *name,
-                                 void *buffer, int buffer_size);
-
+        int     (* fs_setup)(struct obd_device *, struct super_block *);
         int     (* fs_get_op_len)(int, struct fsfilt_objinfo *, int);
+        int     (* fs_add_dir_entry)(struct obd_device *, struct dentry *,
+                                     char *, int, unsigned long, unsigned long,
+                                     unsigned);
+        int     (* fs_del_dir_entry)(struct obd_device *, struct dentry *);
 };
 
 extern int fsfilt_register_ops(struct fsfilt_operations *fs_ops);
@@ -113,45 +96,14 @@ extern void fsfilt_put_ops(struct fsfilt_operations *fs_ops);
 #define FSFILT_OP_SETATTR        8
 #define FSFILT_OP_LINK           9
 #define FSFILT_OP_CANCEL_UNLINK 10
-#define FSFILT_OP_NOOP          15
-
-/* XXX BUG 3188 -- must return to one set of opcodes */
-#define KML_UNLINK              0x11
-#define KML_RMDIR               0x12
-#define KML_RENAME              0x13
-#define KML_CREATE              0x14
-#define KML_MKDIR               0x15
-#define KML_SYMLINK             0x16
-#define KML_MKNOD               0x17
-#define KML_LINK                0x19
-
-#define CACHE_UNLINK            0x21
-#define CACHE_RMDIR             0x22
-#define CACHE_RENAME            0x23
-#define CACHE_CREATE            0x24
-#define CACHE_MKDIR             0x25
-#define CACHE_SYMLINK           0x26
-#define CACHE_MKNOD             0x27
-#define CACHE_LINK              0x29
-#define CACHE_NOOP              0x2f
-
-#define KML_CACHE_UNLINK        0x31
-#define KML_CACHE_RMDIR         0x32
-#define KML_CACHE_RENAME        0x33
-#define KML_CACHE_CREATE        0x34
-#define KML_CACHE_MKDIR         0x35
-#define KML_CACHE_SYMLINK       0x36
-#define KML_CACHE_MKNOD         0x37
-#define KML_CACHE_LINK          0x39
-#define KML_CACHE_NOOP          0x3f
-
-static inline void *
-fsfilt_start_ops(struct fsfilt_operations *ops, struct inode *inode,
-                 int op, struct obd_trans_info *oti, int logs)
+
+static inline void *fsfilt_start_log(struct obd_device *obd,
+                                     struct inode *inode, int op,
+                                     struct obd_trans_info *oti, int logs)
 {
         unsigned long now = jiffies;
         void *parent_handle = oti ? oti->oti_handle : NULL;
-        void *handle = ops->fs_start(inode, op, parent_handle, logs);
+        void *handle = obd->obd_fsops->fs_start(inode, op, parent_handle, logs);
         CDEBUG(D_HA, "started handle %p (%p)\n", handle, parent_handle);
 
         if (oti != NULL) {
@@ -168,60 +120,17 @@ fsfilt_start_ops(struct fsfilt_operations *ops, struct inode *inode,
         return handle;
 }
 
-static inline void *
-fsfilt_start_log(struct obd_device *obd, struct inode *inode,
-                 int op, struct obd_trans_info *oti, int logs)
-{
-        return fsfilt_start_ops(obd->obd_fsops, inode, op, oti, logs);
-}
-
-static inline void *
-fsfilt_start(struct obd_device *obd, struct inode *inode,
-             int op, struct obd_trans_info *oti)
-{
-        return fsfilt_start_ops(obd->obd_fsops, inode, op, oti, 0);
-}
-
-static inline void *
-llog_fsfilt_start(struct llog_ctxt *ctxt, struct inode *inode,
-                  int op, struct obd_trans_info *oti)
-{
-        return fsfilt_start_ops(ctxt->loc_fsops, inode, op, oti, 1);
-}
-
-static inline int
-fsfilt_commit_ops(struct fsfilt_operations *ops, struct inode *inode,
-                  void *handle, int force_sync)
-{
-        unsigned long now = jiffies;
-        int rc = ops->fs_commit(inode, handle, force_sync);
-        CDEBUG(D_HA, "committing handle %p\n", handle);
-
-        if (time_after(jiffies, now + 15 * HZ))
-                CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
-
-        return rc;
-}
-
-static inline int
-fsfilt_commit(struct obd_device *obd, struct inode *inode,
-              void *handle, int force_sync)
+static inline void *fsfilt_start(struct obd_device *obd, struct inode *inode,
+                                 int op, struct obd_trans_info *oti)
 {
-        return fsfilt_commit_ops(obd->obd_fsops, inode, handle, force_sync);
+        return fsfilt_start_log(obd, inode, op, oti, 0);
 }
 
-static inline int
-llog_fsfilt_commit(struct llog_ctxt *ctxt, struct inode *inode,
-                   void *handle, int force_sync)
-{
-        return fsfilt_commit_ops(ctxt->loc_fsops, inode, handle, force_sync);
-}
-
-static inline void *
-fsfilt_brw_start_log(struct obd_device *obd, int objcount,
-                     struct fsfilt_objinfo *fso, int niocount,
-                     struct niobuf_local *nb, struct obd_trans_info *oti,
-                     int logs)
+static inline void *fsfilt_brw_start_log(struct obd_device *obd,
+                                         int objcount,
+                                         struct fsfilt_objinfo *fso,
+                                         int niocount, struct niobuf_local *nb,
+                                         struct obd_trans_info *oti, int logs)
 {
         unsigned long now = jiffies;
         void *parent_handle = oti ? oti->oti_handle : NULL;
@@ -244,17 +153,30 @@ fsfilt_brw_start_log(struct obd_device *obd, int objcount,
         return handle;
 }
 
-static inline void *
-fsfilt_brw_start(struct obd_device *obd, int objcount,
-                 struct fsfilt_objinfo *fso, int niocount,
-                 struct niobuf_local *nb, struct obd_trans_info *oti)
+static inline void *fsfilt_brw_start(struct obd_device *obd, int objcount,
+                                     struct fsfilt_objinfo *fso, int niocount,
+                                     struct niobuf_local *nb,
+                                     struct obd_trans_info *oti)
 {
         return fsfilt_brw_start_log(obd, objcount, fso, niocount, nb, oti, 0);
 }
 
-static inline int
-fsfilt_commit_async(struct obd_device *obd, struct inode *inode,
-                    void *handle, void **wait_handle)
+static inline int fsfilt_commit(struct obd_device *obd, struct inode *inode,
+                                void *handle, int force_sync)
+{
+        unsigned long now = jiffies;
+        int rc = obd->obd_fsops->fs_commit(inode, handle, force_sync);
+        CDEBUG(D_HA, "committing handle %p\n", handle);
+
+        if (time_after(jiffies, now + 15 * HZ))
+                CERROR("long journal start time %lus\n", (jiffies - now) / HZ);
+
+        return rc;
+}
+
+static inline int fsfilt_commit_async(struct obd_device *obd,
+                                      struct inode *inode, void *handle,
+                                      void **wait_handle)
 {
         unsigned long now = jiffies;
         int rc = obd->obd_fsops->fs_commit_async(inode, handle, wait_handle);
@@ -266,8 +188,8 @@ fsfilt_commit_async(struct obd_device *obd, struct inode *inode,
         return rc;
 }
 
-static inline int
-fsfilt_commit_wait(struct obd_device *obd, struct inode *inode, void *handle)
+static inline int fsfilt_commit_wait(struct obd_device *obd,
+                                     struct inode *inode, void *handle)
 {
         unsigned long now = jiffies;
         int rc = obd->obd_fsops->fs_commit_wait(inode, handle);
@@ -277,9 +199,8 @@ fsfilt_commit_wait(struct obd_device *obd, struct inode *inode, void *handle)
         return rc;
 }
 
-static inline int
-fsfilt_setattr(struct obd_device *obd, struct dentry *dentry,
-               void *handle, struct iattr *iattr, int do_trunc)
+static inline int fsfilt_setattr(struct obd_device *obd, struct dentry *dentry,
+                                 void *handle, struct iattr *iattr,int do_trunc)
 {
         unsigned long now = jiffies;
         int rc;
@@ -289,120 +210,43 @@ fsfilt_setattr(struct obd_device *obd, struct dentry *dentry,
         return rc;
 }
 
-static inline int
-fsfilt_iocontrol(struct obd_device *obd, struct inode *inode,
-                 struct file *file, unsigned int cmd,
-                 unsigned long arg)
+static inline int fsfilt_iocontrol(struct obd_device *obd, struct inode *inode,
+                                   struct file *file, unsigned int cmd,
+                                   unsigned long arg)
 {
         return obd->obd_fsops->fs_iocontrol(inode, file, cmd, arg);
 }
 
-static inline int fsfilt_setup(struct obd_device *obd,
-                               struct super_block *fs)
-{
-        if (obd->obd_fsops->fs_setup)
-                return obd->obd_fsops->fs_setup(fs);
-
-        return 0;
-}
-
-static inline int
-fsfilt_set_md(struct obd_device *obd, struct inode *inode,
-              void *handle, void *md, int size)
+static inline int fsfilt_set_md(struct obd_device *obd, struct inode *inode,
+                                void *handle, void *md, int size)
 {
         return obd->obd_fsops->fs_set_md(inode, handle, md, size);
 }
 
-static inline int
-fsfilt_get_md(struct obd_device *obd, struct inode *inode,
-              void *md, int size)
+static inline int fsfilt_get_md(struct obd_device *obd, struct inode *inode,
+                                void *md, int size)
 {
         return obd->obd_fsops->fs_get_md(inode, md, size);
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-static inline int
-fsfilt_send_bio(struct obd_device *obd, struct inode *inode,
-                struct bio *bio)
-#else
-static inline int
-fsfilt_send_bio(struct obd_device *obd, struct inode *inode,
-                struct kiobuf *bio)
-#endif
-{
-        return obd->obd_fsops->fs_send_bio(inode, bio);
-}
-
-static inline int
-fsfilt_putpage(struct obd_device *obd, struct inode *inode,
-               struct page *page)
-{
-        int rc = 0;
-        struct filter_obd *filter;
-        unsigned long now = jiffies;
-
-        LASSERT(obd != NULL);
-        LASSERT(inode != NULL);
-        LASSERT(page != NULL);
-
-        filter = &obd->u.filter;
-
-        if (!obd->obd_fsops->fs_putpage)
-                return -ENOSYS;
-
-        CDEBUG(D_INFO, "putpage %lx\n", page->index);
-
-        rc = obd->obd_fsops->fs_putpage(inode, page);
-
-        if (time_after(jiffies, now + 15 * HZ))
-                CERROR("long putpage time %lus\n", (jiffies - now) / HZ);
-
-        return rc;
-}
-
-static inline struct page *
-fsfilt_getpage(struct obd_device *obd, struct inode *inode,
-               unsigned long index)
-{
-        struct page *page;
-        unsigned long now = jiffies;
-
-        LASSERT(obd != NULL);
-        LASSERT(inode != NULL);
-
-        if (!obd->obd_fsops->fs_getpage)
-                return ERR_PTR(-ENOSYS);
-
-        CDEBUG(D_INFO, "getpage %lx\n", index);
-
-        page = obd->obd_fsops->fs_getpage(inode, index);
-
-        if (time_after(jiffies, now + 15 * HZ))
-                CERROR("long getpage time %lus\n", (jiffies - now) / HZ);
-
-        return page;
-}
-
-static inline ssize_t
-fsfilt_readpage(struct obd_device *obd, struct file *file, char *buf,
-                size_t count, loff_t *offset)
+static inline ssize_t fsfilt_readpage(struct obd_device *obd,
+                                      struct file *file, char *buf,
+                                      size_t count, loff_t *offset)
 {
         return obd->obd_fsops->fs_readpage(file, buf, count, offset);
 }
 
-static inline int
-fsfilt_add_journal_cb(struct obd_device *obd, struct super_block *sb,
-                      __u64 last_rcvd, void *handle, fsfilt_cb_t cb_func,
-                      void *cb_data)
+static inline int fsfilt_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
+                                        void *handle, fsfilt_cb_t cb_func,
+                                        void *cb_data)
 {
-        return obd->obd_fsops->fs_add_journal_cb(obd, sb, last_rcvd, handle,
-                                                 cb_func, cb_data);
+        return obd->obd_fsops->fs_add_journal_cb(obd, last_rcvd,
+                                                 handle, cb_func, cb_data);
 }
 
 /* very similar to obd_statfs(), but caller already holds obd_osfs_lock */
-static inline int
-fsfilt_statfs(struct obd_device *obd, struct super_block *sb,
-              unsigned long max_age)
+static inline int fsfilt_statfs(struct obd_device *obd, struct super_block *sb,
+                                unsigned long max_age)
 {
         int rc = 0;
 
@@ -418,59 +262,67 @@ fsfilt_statfs(struct obd_device *obd, struct super_block *sb,
         return rc;
 }
 
-static inline int
-fsfilt_sync(struct obd_device *obd, struct super_block *sb)
+static inline int fsfilt_sync(struct obd_device *obd, struct super_block *sb)
 {
         return obd->obd_fsops->fs_sync(sb);
 }
 
-static inline int fsfilt_map_inode_pages(struct obd_device *obd,
-                                         struct inode *inode,
-                                         struct page **page, int pages,
-                                         unsigned long *blocks, int *created,
-                                         int create, struct semaphore *sem)
+static inline int fsfilt_map_inode_page(struct obd_device *obd,
+                                        struct inode *inode, struct page *page,
+                                        unsigned long *blocks, int *created,
+                                        int create)
 {
-        return obd->obd_fsops->fs_map_inode_pages(inode, page, pages, blocks,
-                                                  created, create, sem);
+        return obd->obd_fsops->fs_map_inode_page(inode, page, blocks, created,
+                                                 create);
 }
 
-static inline int
-fs_prep_san_write(struct obd_device *obd, struct inode *inode,
-                  long *blocks, int nblocks, loff_t newsize)
+static inline int fs_prep_san_write(struct obd_device *obd,
+                                    struct inode *inode,
+                                    long *blocks,
+                                    int nblocks,
+                                    loff_t newsize)
 {
         return obd->obd_fsops->fs_prep_san_write(inode, blocks,
                                                  nblocks, newsize);
 }
 
-static inline int
-fsfilt_read_record(struct obd_device *obd, struct file *file,
-                   void *buf, loff_t size, loff_t *offs)
+static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
+                                     void *buf, loff_t size, loff_t *offs)
 {
         return obd->obd_fsops->fs_read_record(file, buf, size, offs);
 }
 
-static inline int
-fsfilt_write_record(struct obd_device *obd, struct file *file,
-                    void *buf, loff_t size, loff_t *offs, int force_sync)
+static inline int fsfilt_write_record(struct obd_device *obd, struct file *file,
+                                      void *buf, loff_t size, loff_t *offs,
+                                      int force_sync)
 {
-        return obd->obd_fsops->fs_write_record(file, buf, size, offs,
-                                               force_sync);
+        return obd->obd_fsops->fs_write_record(file, buf, size,offs,force_sync);
+}
+
+static inline int fsfilt_setup(struct obd_device *obd, struct super_block *fs)
+{
+        if (obd->obd_fsops->fs_setup)
+                return obd->obd_fsops->fs_setup(obd, fs);
+        return 0;
 }
 
-static inline int
-llog_fsfilt_write_record(struct llog_ctxt *ctxt, struct file *file,
-                         void *buf, loff_t size, loff_t *offs,
-                         int force_sync)
+static inline int fsfilt_add_dir_entry(struct obd_device *obd,
+                                        struct dentry *dir,
+                                        char *name, int namelen,
+                                        unsigned long ino,
+                                        unsigned long generation,
+                                        unsigned mds)
 {
-        return ctxt->loc_fsops->fs_write_record(file, buf, size, offs,
-                                                force_sync);
+        LASSERT(obd->obd_fsops->fs_add_dir_entry);
+        return obd->obd_fsops->fs_add_dir_entry(obd, dir, name,
+                                                namelen, ino, generation, mds);
 }
 
-static inline int
-llog_fsfilt_read_record(struct llog_ctxt *ctxt, struct file *file,
-                        void *buf, loff_t size, loff_t *offs)
+static inline int fsfilt_del_dir_entry(struct obd_device *obd,
+                                        struct dentry *dentry)
 {
-        return ctxt->loc_fsops->fs_read_record(file, buf, size, offs);
+        LASSERT(obd->obd_fsops->fs_del_dir_entry);
+        return obd->obd_fsops->fs_del_dir_entry(obd, dentry);
 }
 
 #endif /* __KERNEL__ */