announce: readahead-1.4

[Michael E Brown]

On Wed, Mar 07, 2007 at 05:38:29PM -0600, Callum Lerwick wrote:
> We could designate the first ext3 block group (actually should make the
> number configurable) as the "hot" area. Patch the kernel so it avoids
> doing any allocations in the "hot" group(s) except as a last resort.
> Then write a tool to move files into the "hot" area somehow, possibly
> with help from the kernel.

There is already work going on for online defrag. Google turns up several hits. You wouldnt really need to patch the kernel to avoid allocations to the 'hot' area if you always have the hot area packed with hot files.
--
Michael