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Btrfs: Clone file data ioctl

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Add a new ioctl to clone file data

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Sage Weil
2008-05-02 14:43:14 -04:00
committed by Chris Mason
parent d6bfde8765
commit f2eb0a241f
5 changed files with 179 additions and 11 deletions
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12
fs/btrfs/file-item.c
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@ -28,10 +28,10 @@
sizeof(struct btrfs_item) * 2) / \
BTRFS_CRC32_SIZE) - 1))
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 pos,
u64 offset, u64 disk_num_bytes,
u64 num_bytes)
struct btrfs_root *root,
u64 objectid, u64 pos,
u64 disk_offset, u64 disk_num_bytes,
u64 num_bytes, u64 offset)
{
int ret = 0;
struct btrfs_file_extent_item *item;
@ -53,9 +53,9 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
leaf = path->nodes[0];
item = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_file_extent_item);
btrfs_set_file_extent_disk_bytenr(leaf, item, offset);
btrfs_set_file_extent_disk_bytenr(leaf, item, disk_offset);
btrfs_set_file_extent_disk_num_bytes(leaf, item, disk_num_bytes);
btrfs_set_file_extent_offset(leaf, item, 0);
btrfs_set_file_extent_offset(leaf, item, offset);
btrfs_set_file_extent_num_bytes(leaf, item, num_bytes);
btrfs_set_file_extent_generation(leaf, item, trans->transid);
btrfs_set_file_extent_type(leaf, item, BTRFS_FILE_EXTENT_REG);