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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 | Btrfs: nuke fs wide allocation mutex V2 (diff) | |
| download | linux-dev-84234f3a1f7c532e4afeba03cc8e7e4a8a5277ea.tar.xz linux-dev-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/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 1136ce2febcc..fd3c8b5676c1 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); |