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| author | Yan, Zheng <zheng.yan@oracle.com> | 2010-05-16 10:49:58 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-05-25 10:34:52 -0400 |
| commit | d68fc57b7e3245cfacf2e3b47acfed1946a11786 (patch) | |
| tree | c2572fcd935017440c8370c8a12ceb49a7fc4f1f /fs/btrfs/ioctl.c | |
| parent | 8929ecfa50f266163832eeacfbc3642ed5eb83b6 (diff) | |
| download | lwn-d68fc57b7e3245cfacf2e3b47acfed1946a11786.tar.gz lwn-d68fc57b7e3245cfacf2e3b47acfed1946a11786.zip | |
Btrfs: Metadata reservation for orphan inodes
reserve metadata space for handling orphan inodes
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a0686658a3f6..4cdb98cf26de 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1297,10 +1297,12 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file, dest->root_item.drop_level = 0; btrfs_set_root_refs(&dest->root_item, 0); - ret = btrfs_insert_orphan_item(trans, - root->fs_info->tree_root, - dest->root_key.objectid); - BUG_ON(ret); + if (!xchg(&dest->orphan_item_inserted, 1)) { + ret = btrfs_insert_orphan_item(trans, + root->fs_info->tree_root, + dest->root_key.objectid); + BUG_ON(ret); + } ret = btrfs_commit_transaction(trans, root); BUG_ON(ret); |