diff options
Diffstat (limited to 'include/spl/sys/dkio.h')
| -rw-r--r-- | include/spl/sys/dkio.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/spl/sys/dkio.h b/include/spl/sys/dkio.h new file mode 100644 index 000000000..49f166a9c --- /dev/null +++ b/include/spl/sys/dkio.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. + * Copyright (C) 2007 The Regents of the University of California. + * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). + * Written by Brian Behlendorf <[email protected]>. + * UCRL-CODE-235197 + * + * This file is part of the SPL, Solaris Porting Layer. + * For details, see <http://zfsonlinux.org/>. + * + * The SPL 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 of the License, or (at your + * option) any later version. + * + * The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _SPL_DKIO_H +#define _SPL_DKIO_H + +#define DFL_SZ(num_exts) \ + (sizeof (dkioc_free_list_t) + (num_exts - 1) * 16) + +#define DKIOC (0x04 << 8) +#define DKIOCFLUSHWRITECACHE (DKIOC|34) /* flush cache to phys medium */ + +/* + * ioctl to free space (e.g. SCSI UNMAP) off a disk. + * Pass a dkioc_free_list_t containing a list of extents to be freed. + */ +#define DKIOCFREE (DKIOC|50) + +#endif /* _SPL_DKIO_H */ |