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| author | Filipe David Borba Manana <fdmanana@gmail.com> | 2014-02-01 02:02:16 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fb.com> | 2014-03-10 15:15:43 -0400 |
| commit | 5ed7f9ff15e6ea56bcb78f69e9503dc1a587caf0 (patch) | |
| tree | b07f3bbfe731e2de265e4f987a2ec9d7ba8da307 /fs/btrfs/send.c | |
| parent | 03cb4fb9d86d591bc8a3f66eac6fb874b50b1b4d (diff) | |
| download | blackbird-op-linux-5ed7f9ff15e6ea56bcb78f69e9503dc1a587caf0.tar.gz blackbird-op-linux-5ed7f9ff15e6ea56bcb78f69e9503dc1a587caf0.zip | |
Btrfs: more send support for parent/child dir relationship inversion
The commit titled "Btrfs: fix infinite path build loops in incremental send"
didn't cover a particular case where the parent-child relationship inversion
of directories doesn't imply a rename of the new parent directory. This was
due to a simple logic mistake, a logical and instead of a logical or.
Steps to reproduce:
$ mkfs.btrfs -f /dev/sdb3
$ mount /dev/sdb3 /mnt/btrfs
$ mkdir -p /mnt/btrfs/a/b/bar1/bar2/bar3/bar4
$ btrfs subvol snapshot -r /mnt/btrfs /mnt/btrfs/snap1
$ mv /mnt/btrfs/a/b/bar1/bar2/bar3/bar4 /mnt/btrfs/a/b/k44
$ mv /mnt/btrfs/a/b/bar1/bar2/bar3 /mnt/btrfs/a/b/k44
$ mv /mnt/btrfs/a/b/bar1/bar2 /mnt/btrfs/a/b/k44/bar3
$ mv /mnt/btrfs/a/b/bar1 /mnt/btrfs/a/b/k44/bar3/bar2/k11
$ btrfs subvol snapshot -r /mnt/btrfs /mnt/btrfs/snap2
$ btrfs send -p /mnt/btrfs/snap1 /mnt/btrfs/snap2 > /tmp/incremental.send
A patch to update the test btrfs/030 from xfstests, so that it covers
this case, will be submitted soon.
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/send.c')
| -rw-r--r-- | fs/btrfs/send.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 8bd0505ee2f9..154a717d2a3c 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -3053,8 +3053,8 @@ static int wait_for_parent_move(struct send_ctx *sctx, len1 = fs_path_len(path_before); len2 = fs_path_len(path_after); - if ((parent_ino_before != parent_ino_after) && (len1 != len2 || - memcmp(path_before->start, path_after->start, len1))) { + if (parent_ino_before != parent_ino_after || len1 != len2 || + memcmp(path_before->start, path_after->start, len1)) { ret = 1; goto out; } |
