hammer_alloc_data panic

[corecode at fs.ei.tum.de]

On Wed, July 16, 2008 18:25, Matthew Dillon wrote:
> But the reblocking doesn't scan by block, it scans the B-Tree.  So,
> due to fragmentation, reblocking by scanning the B-Tree might free up
> *some* of the space in each of those 16 blocks while filling up a new
> block, but the new block may become completely full before any one of those
> 16 blocks becomes completely empty.  So another new block needs
> to be allocated.

Oh I see, that's in clear contrast to LFS.  Is it possible to find all
b-tree elements (or rather, their parents) when looking at one block?

cheers
  simon