[haiku-development] Re: Fixate blocks in cache block
- From: Axel Dörfler <axeld@xxxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Wed, 14 Apr 2010 13:46:27 +0200
On 04/13/2010 09:18 PM, Janito Ferreira Filho wrote:
> is it a reasonable implementation to use the block cache to store
> altered blocks notified in the journal without actually writing them?
> I'm thinking about getting write access to the overwritten blocks when
> the journal replays the log in read only mode, and then discard
> everything when the file system is unmounted.
That doesn't really sound like a good solution, and would also waste
quite a bit of non-pageable memory.
[...]
> It would probably be more efficient if there were a block remapping
> scheme. Does the block cache support any kind of block triggers? Would
> it be possible to implement something like that (maybe in the future)?
There is no support for this yet, but this would definitely be the way
to go.
Bye,
Axel.
Other related posts:
