projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 0b86a832 CM |
1 | /* |
| 2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public | |
| 6 | * License v2 as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 11 | * General Public License for more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU General Public | |
| 14 | * License along with this program; if not, write to the | |
| 15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 16 | * Boston, MA 021110-1307, USA. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef __BTRFS_VOLUMES_ | |
| 20 | #define __BTRFS_VOLUMES_ | |
| 21 | struct btrfs_device { | |
| 22 | struct list_head dev_list; | |
| 23 | struct btrfs_root *dev_root; | |
| 24 | struct btrfs_key dev_key; | |
| 25 | ||
| 26 | struct block_device *bdev; | |
| 27 | ||
| 28 | /* the internal btrfs device id */ | |
| 29 | u64 devid; | |
| 30 | ||
| 31 | /* size of the device */ | |
| 32 | u64 total_bytes; | |
| 33 | ||
| 34 | /* bytes used */ | |
| 35 | u64 bytes_used; | |
| 36 | ||
| 37 | /* optimal io alignment for this device */ | |
| 38 | u32 io_align; | |
| 39 | ||
| 40 | /* optimal io width for this device */ | |
| 41 | u32 io_width; | |
| 42 | ||
| 43 | /* minimal io size for this device */ | |
| 44 | u32 sector_size; | |
| 45 | ||
| 46 | /* the kernel device number */ | |
| 47 | u64 rdev; | |
| 48 | ||
| 49 | /* type and info about this device */ | |
| 50 | u64 type; | |
| 51 | ||
| 52 | /* partition number, 0 for whole dev */ | |
| 53 | int partition; | |
| 54 | ||
| 55 | /* length of the name data at the end of the item */ | |
| 56 | int name_len; | |
| 57 | ||
| 58 | /* physical drive uuid (or lvm uuid) */ | |
| 59 | u8 uuid[BTRFS_DEV_UUID_SIZE]; | |
| 60 | ||
| 61 | char *name; | |
| 62 | }; | |
| 63 | ||
| 64 | int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, | |
| 65 | struct btrfs_device *device, | |
| 66 | u64 owner, u64 num_bytes, u64 *start); | |
| 67 | int btrfs_map_block(struct btrfs_mapping_tree *map_tree, | |
| 68 | u64 logical, u64 *phys, u64 *length, | |
| 69 | struct btrfs_device **dev); | |
| 70 | int btrfs_read_sys_array(struct btrfs_root *root); | |
| 71 | int btrfs_read_chunk_tree(struct btrfs_root *root); | |
| 72 | int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, | |
| 73 | struct btrfs_root *extent_root, u64 *start, | |
| 6324fbf3 | 74 | u64 *num_bytes, u64 type); |
| 0b86a832 CM |
75 | void btrfs_mapping_init(struct btrfs_mapping_tree *tree); |
| 76 | void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree); | |
| 77 | int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio); | |
| 78 | #endif |