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| author | Chris Mason <chris.mason@oracle.com> | 2008-04-03 16:29:03 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:01 -0400 |
| commit | 8790d502e4401a4a3a4175b83a3a47e8d595c771 (patch) | |
| tree | 7e01c053d6a99c3c2a6fb71a7338b083e953f0b3 /fs/btrfs/volumes.h | |
| parent | 0ef8b2428a339e83fe225e82ef8bd0ea3f62b180 (diff) | |
| download | linux-8790d502e4401a4a3a4175b83a3a47e8d595c771.tar.gz | |
Btrfs: Add support for mirroring across drives
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 12f297eb0559..35dec3efd78c 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -18,12 +18,16 @@ #ifndef __BTRFS_VOLUMES_ #define __BTRFS_VOLUMES_ + struct btrfs_device { struct list_head dev_list; struct btrfs_root *dev_root; + spinlock_t io_lock; struct block_device *bdev; + u64 total_ios; + char *name; /* the internal btrfs device id */ @@ -68,9 +72,9 @@ struct btrfs_fs_devices { int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 owner, u64 num_bytes, u64 *start); -int btrfs_map_block(struct btrfs_mapping_tree *map_tree, +int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, int stripe_nr, u64 logical, u64 *phys, u64 *length, - struct btrfs_device **dev); + struct btrfs_device **dev, int *total_stripes); int btrfs_read_sys_array(struct btrfs_root *root); int btrfs_read_chunk_tree(struct btrfs_root *root); int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, @@ -80,9 +84,6 @@ void btrfs_mapping_init(struct btrfs_mapping_tree *tree); void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree); int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio); int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf); -int btrfs_map_block(struct btrfs_mapping_tree *map_tree, - u64 logical, u64 *phys, u64 *length, - struct btrfs_device **dev); int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, int flags, void *holder); int btrfs_scan_one_device(const char *path, int flags, void *holder, |