land v0.9.1 on HEAD, in preparation for a 1.0.x branch

[fs/lustre-release.git] / lustre / include / linux / obd_snap_support.h

diff --git a/lustre/include/linux/obd_snap_support.h b/lustre/include/linux/obd_snap_support.h
deleted file mode 100644 (file)
index fd8baa4..0000000
--- a/lustre/include/linux/obd_snap_support.h
+++ /dev/null
@@ -1,85 +0,0 @@
-#ifndef __OBD_SNAP_SUPP_H
-#define __OBD_SNAP_SUPP_H
-/*
- * Copyright (C) 2001  Cluster File Systems, Inc.
- *
- * This code is issued under the GNU General Public License.
- * See the file COPYING in this distribution
- */
-
-/* What we use to point to IDs in the obdmd data for snapshots.  If we use
- * obd_id (8 bytes) instead of ino_t (4 bytes), we halve the number of
- * available snapshot slots (14 in 56 bytes vs. 7 in 56 bytes until we
- * increase the size of OBD_OBDMDSZ).
- */
-typedef obd_id snap_id;
-
-/* maximum number of snapshot tables we maintain in the kernel */
-#define SNAP_MAX_TABLES 8
-
-/* maximum number of snapshots per device 
-   must fit in "o_obdmd" area of struct obdo */
-#define SNAP_MAX ((OBD_OBDMDSZ - sizeof(uint32_t))/sizeof(snap_id))
-
-struct snap_md {
-       uint32_t m_magic;
-       snap_id  m_ids[SNAP_MAX];       /* id of snaps; slot 0 has current id */
-};
-
-
-/* if time is 0 this designates the "current" snapshot, i.e.
-   the head of the tree 
-*/
-struct snap {
-       time_t time;
-       int index;
-};
-
-/* snap ioctl data for attach: current always in first slot of this array */
-struct snap_obd_data {
-       int          snap_dev;  /* which device contains the data */
-       unsigned int snap_index;/* which snapshot is ours */
-       unsigned int snap_table;/* which table do we use */
-};
-
-
-/* snap ioctl data for table fiddling */
-struct snap_table_data {
-       int             tblcmd_no;      /* which table */
-       unsigned int    tblcmd_count;   /* how many snaps */
-       struct snap     tblcmd_snaps[SNAP_MAX]; /* sorted times! */
-};
-
-
-struct snap_table {
-       spinlock_t          tbl_lock;
-       unsigned int tbl_count; /* how many snapshots exist in this table*/
-       int tbl_used;  /* bitmap of snaps in use by a device */
-       time_t tbl_times[SNAP_MAX];
-       int tbl_index[SNAP_MAX];
-};
-
-struct snap_iterdata {
-       struct lustre_handle *conn;
-       struct lustre_handle *ch_conn;
-       int index;
-       int previndex;
-       int currentindex;
-       int prevslot;
-       time_t prevtime;
-};
-
-inline struct lustre_handle *child_conn(struct lustre_handle *conn);
-int snap_deleteobj(obd_id id, obd_gr group, void *data);
-int snap_restoreobj(obd_id id, obd_gr group, void *data);
-int snap_printobj(obd_id id, obd_gr group, void *data);
-int snap_iocontrol(unsigned int cmd, struct lustre_handle *conn, int len, void *karg, void *uarg);
-
-/* In the future, this function may have to deal with offsets into the obdmd.
- * Currently, we assume we have the whole obdmd struct.
- */
-static __inline__ struct snap_md *snap_obdmd(struct obdo *oa)
-{
-       return ((struct snap_md *)(&oa->o_obdmd));
-}
-#endif