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| author | Yan, Zheng | 2009-09-21 22:00:26 +0200 |
|---|---|---|
| committer | Chris Mason | 2009-09-21 22:00:26 +0200 |
| commit | 76dda93c6ae2c1dc3e6cde34569d6aca26b0c918 (patch) | |
| tree | f5ca46ec89d4ae2c762952d5f35e2c6f95ac046a /fs/btrfs/tree-log.c | |
| parent | Btrfs: change how subvolumes are organized (diff) | |
| download | kernel-qcow2-linux-76dda93c6ae2c1dc3e6cde34569d6aca26b0c918.tar.gz kernel-qcow2-linux-76dda93c6ae2c1dc3e6cde34569d6aca26b0c918.tar.xz kernel-qcow2-linux-76dda93c6ae2c1dc3e6cde34569d6aca26b0c918.zip | |
Btrfs: add snapshot/subvolume destroy ioctl
This patch adds snapshot/subvolume destroy ioctl. A subvolume that isn't being
used and doesn't contains links to other subvolumes can be destroyed.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/tree-log.c')
| -rw-r--r-- | fs/btrfs/tree-log.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 6e674d76186d..4d7d9abef42f 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2841,7 +2841,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans, if (!parent || !parent->d_inode || sb != parent->d_inode->i_sb) break; - if (parent == sb->s_root) + if (IS_ROOT(parent)) break; parent = parent->d_parent; @@ -2880,6 +2880,12 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans, goto end_no_trans; } + if (root != BTRFS_I(inode)->root || + btrfs_root_refs(&root->root_item) == 0) { + ret = 1; + goto end_no_trans; + } + ret = check_parent_dirs_for_sync(trans, inode, parent, sb, last_committed); if (ret) @@ -2907,12 +2913,15 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans, break; inode = parent->d_inode; + if (root != BTRFS_I(inode)->root) + break; + if (BTRFS_I(inode)->generation > root->fs_info->last_trans_committed) { ret = btrfs_log_inode(trans, root, inode, inode_only); BUG_ON(ret); } - if (parent == sb->s_root) + if (IS_ROOT(parent)) break; parent = parent->d_parent; |