And this is relevant to ext4... exactly how?

Posted Dec 2, 2011 23:35 UTC (Fri) by nix (subscriber, #2304)
In reply to: And this is relevant to ext4... exactly how? by tytso
Parent article: Improving ext4: bigalloc, inline data, and metadata checksums

We could fix things so that as you delete files from a full file system, we reduce the high watermark field for each block group's inode table

That seems hard to me. It's easy to tell if you need to increase the high watermark when adding a new file: but when you delete one, how can you tell what to reduce the high watermark to without doing a fairly expensive scan?