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authorFilipe David Borba Manana <fdmanana@gmail.com>2014-02-01 02:02:16 +0000
committerJosef Bacik <jbacik@fb.com>2014-03-10 15:15:43 -0400
commit5ed7f9ff15e6ea56bcb78f69e9503dc1a587caf0 (patch)
treeb07f3bbfe731e2de265e4f987a2ec9d7ba8da307 /fs/btrfs/send.c
parent03cb4fb9d86d591bc8a3f66eac6fb874b50b1b4d (diff)
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.c4
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;
}