Chris Mason ea9e8b11bd Btrfs: prevent loops in the directory tree when creating snapshots ...

For a directory tree:

/mnt/subvolA/subvolB

btrfsctl -s /mnt/subvolA/subvolB /mnt

Will create a directory loop with subvolA under subvolB.  This
commit uses the forward refs for each subvol and snapshot to error out
before creating the loop.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

2008-11-17 21:14:24 -05:00

8.9 KiB

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