| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program 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 version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2014, 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * FIEMAP data structures and flags. This header file will be used until |
| * fiemap.h is available in the upstream kernel. |
| * |
| * Author: Kalpak Shah <kalpak.shah@sun.com> |
| * Author: Andreas Dilger <adilger@sun.com> |
| */ |
| |
| #ifndef _LUSTRE_FIEMAP_H |
| #define _LUSTRE_FIEMAP_H |
| |
| #include <stddef.h> |
| #include <linux/fiemap.h> |
| |
| /* XXX: We use fiemap_extent::fe_reserved[0] */ |
| #define fe_device fe_reserved[0] |
| |
| static inline size_t fiemap_count_to_size(size_t extent_count) |
| { |
| return sizeof(struct fiemap) + extent_count * |
| sizeof(struct fiemap_extent); |
| } |
| |
| static inline unsigned fiemap_size_to_count(size_t array_size) |
| { |
| return (array_size - sizeof(struct fiemap)) / |
| sizeof(struct fiemap_extent); |
| } |
| |
| #define FIEMAP_FLAG_DEVICE_ORDER 0x40000000 /* return device ordered mapping */ |
| |
| #ifdef FIEMAP_FLAGS_COMPAT |
| #undef FIEMAP_FLAGS_COMPAT |
| #endif |
| |
| /* Lustre specific flags - use a high bit, don't conflict with upstream flag */ |
| #define FIEMAP_EXTENT_NO_DIRECT 0x40000000 /* Data mapping undefined */ |
| #define FIEMAP_EXTENT_NET 0x80000000 /* Data stored remotely. |
| * Sets NO_DIRECT flag |
| */ |
| |
| #endif /* _LUSTRE_FIEMAP_H */ |
