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authorYan Zheng <zheng.yan@oracle.com>2008-10-09 19:46:24 +0400
committerChris Mason <chris.mason@oracle.com>2008-10-09 19:46:24 +0400
commit3bb1a1bc42f2ae9582c28adf620484efcd4da38d (patch)
tree4e65ee859e73ea9558e33a02ba10e1d9d54756f3 /fs/btrfs/file.c
parenta76a3cd40c1127ca199d4f7f37bf0d541bf44eb2 (diff)
downloadlinux-3bb1a1bc42f2ae9582c28adf620484efcd4da38d.tar.xz
Btrfs: Remove offset field from struct btrfs_extent_ref
The offset field in struct btrfs_extent_ref records the position inside file that file extent is referenced by. In the new back reference system, tree leaves holding references to file extent are recorded explicitly. We can scan these tree leaves very quickly, so the offset field is not required. This patch also makes the back reference system check the objectid when extents are in deleting. Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Diffstat (limited to 'fs/btrfs/file.c')
-rw-r--r--fs/btrfs/file.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 18dfdf5f91d1..69abbe19add2 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -788,8 +788,7 @@ next_slot:
le64_to_cpu(old.disk_num_bytes),
leaf->start,
root->root_key.objectid,
- trans->transid,
- ins.objectid, ins.offset);
+ trans->transid, ins.objectid);
BUG_ON(ret);
}
btrfs_release_path(root, path);
@@ -808,8 +807,7 @@ next_slot:
disk_bytenr,
le64_to_cpu(old.disk_num_bytes),
leaf_start, root_owner,
- root_gen, key.objectid,
- key.offset, 0);
+ root_gen, key.objectid, 0);
BUG_ON(ret);
*hint_byte = disk_bytenr;
}