diff options
Diffstat (limited to 'drivers/md/lvm-snap.h')
| -rw-r--r-- | drivers/md/lvm-snap.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/md/lvm-snap.h b/drivers/md/lvm-snap.h new file mode 100644 index 000000000..23538a1b7 --- /dev/null +++ b/drivers/md/lvm-snap.h @@ -0,0 +1,47 @@ +/* + * kernel/lvm-snap.h + * + * Copyright (C) 2001 Sistina Software + * + * + * LVM driver is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * LVM driver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +/* + * Changelog + * + * 05/01/2001:Joe Thornber - Factored this file out of lvm.c + * + */ + +#ifndef LVM_SNAP_H +#define LVM_SNAP_H + +/* external snapshot calls */ +extern inline int lvm_get_blksize(kdev_t); +extern int lvm_snapshot_alloc(lv_t *); +extern void lvm_snapshot_fill_COW_page(vg_t *, lv_t *); +extern int lvm_snapshot_COW(kdev_t, ulong, ulong, ulong, lv_t *); +extern int lvm_snapshot_remap_block(kdev_t *, ulong *, ulong, lv_t *); +extern void lvm_snapshot_release(lv_t *); +extern int lvm_write_COW_table_block(vg_t *, lv_t *); +extern inline void lvm_hash_link(lv_block_exception_t *, + kdev_t, ulong, lv_t *); +extern int lvm_snapshot_alloc_hash_table(lv_t *); +extern void lvm_drop_snapshot(lv_t *, const char *); + +#endif |