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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/ioctl.c | |
| parent | 2517920135b0d29e70453e5b03d70d7b94207df3 (diff) | |
| download | op-kernel-dev-84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea.zip op-kernel-dev-84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea.tar.gz | |
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/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 1136ce2..fd3c8b5 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -108,6 +108,7 @@ static noinline int create_subvol(struct btrfs_root *root, inode_item->mode = cpu_to_le32(S_IFDIR | 0755); btrfs_set_root_bytenr(&root_item, leaf->start); + btrfs_set_root_generation(&root_item, trans->transid); btrfs_set_root_level(&root_item, 0); btrfs_set_root_refs(&root_item, 1); btrfs_set_root_used(&root_item, 0); |
