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| author | Yan Zheng <zheng.yan@oracle.com> | 2008-10-29 14:49:05 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-10-29 14:49:05 -0400 |
| commit | 84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea (patch) | |
| tree | c41f249b448f28b648b21c3898d0763b9c67ca6a /fs/btrfs/extent-tree.c | |
| parent | 2517920135b0d29e70453e5b03d70d7b94207df3 (diff) | |
| download | lwn-84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea.tar.gz lwn-84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea.zip | |
Btrfs: Add root tree pointer transaction ids
This patch adds transaction IDs to root tree pointers.
Transaction IDs in tree pointers are compared with the
generation numbers in block headers when reading root
blocks of trees. This can detect some types of IO errors.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 564260872c7e..155c8dc56a22 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4428,6 +4428,7 @@ static int noinline init_reloc_tree(struct btrfs_trans_handle *trans, btrfs_set_root_refs(root_item, 0); btrfs_set_root_bytenr(root_item, eb->start); btrfs_set_root_level(root_item, btrfs_header_level(eb)); + btrfs_set_root_generation(root_item, trans->transid); btrfs_tree_unlock(eb); free_extent_buffer(eb); |