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authorJosef Bacik <josef@redhat.com>2011-06-14 15:16:14 -0400
committerJosef Bacik <josef@redhat.com>2011-06-15 13:24:46 -0400
commit8351583e3f6e430ce8f71913909a96ad5cc6a2f6 (patch)
treef345f40f94d12ffe090735f19aebc96c72be44bd /fs/exofs
parent71d7aed014457147e8f71a843d5fbf03235e4a85 (diff)
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Btrfs: protect the pending_snapshots list with trans_lock
Currently there is nothing protecting the pending_snapshots list on the transaction. We only hold the directory mutex that we are snapshotting and a read lock on the subvol_sem, so we could race with somebody else creating a snapshot in a different directory and end up with list corruption. So protect this list with the trans_lock. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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