1 /* 2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. 3 * Copyright (C) 2007 The Regents of the University of California. 4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). 5 * Written by Brian Behlendorf <[email protected]>. 6 * UCRL-CODE-235197 7 * 8 * This file is part of the SPL, Solaris Porting Layer. 9 * 10 * The SPL is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 * The SPL is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 18 * for more details. 19 * 20 * You should have received a copy of the GNU General Public License along 21 * with the SPL. If not, see <http://www.gnu.org/licenses/>. 22 */ 23 24 #ifndef _SPL_DKIO_H 25 #define _SPL_DKIO_H 26 27 #define DFL_SZ(num_exts) \ 28 (sizeof (dkioc_free_list_t) + (num_exts - 1) * 16) 29 30 #define DKIOC (0x04 << 8) 31 #define DKIOCFLUSHWRITECACHE (DKIOC|34) /* flush cache to phys medium */ 32 33 /* 34 * ioctl to free space (e.g. SCSI UNMAP) off a disk. 35 * Pass a dkioc_free_list_t containing a list of extents to be freed. 36 */ 37 #define DKIOCFREE (DKIOC|50) 38 39 #endif /* _SPL_DKIO_H */ 40