<h1>Btrfs offline dedupe [3.12]</h1>
<ul class="incremental">
<li>
- Btrfs generally does COW rather than updating in-place, allowing
- snapshots and file copies to defer the actual copying and save
- space
+ Btrfs generally copies and frees blocks, rather than updating
+ in-place
+ </li>
+ <li>
+ This allows snapshots and file copies to copy-by-reference,
+ deferring the real copying until changes are made
</li>
<li>
Filesystems may still end up with multiple copies of the same
to use them
</li>
<li>
- <tt>mtip32xx</tt> driver now supports multiqueue, but SCSI
- drivers don't yet - may be backport-able?
+ <tt>nvme</tt> and <tt>mtip32xx</tt> drivers now support
+ multiqueue, but SCSI drivers don't yet - may be backport-able?
</li>
</ul>
</div>