On 8/9/06, Hans Reiser <[email protected]> wrote:
Christoph Hellwig wrote:
> I must admit that standalone code snipplet doesn't really tell me a lot.
>
>Do you mean the possibility to pass around a filesystem-defined structure
>to multiple allocator calls? I'm pretty sure can add that, I though it
>would be useful multiple times in the past but always found ways around
>it.
>
>
>
Assuming I understand your discussion, I see two ways to go, one is to
pass around fs specific state and continue to call into the FS many
times, and the other is to instead provide the fs with helper functions
that accomplish readahead calculation, page allocation, etc., and let
the FS keep its state naturally without having to preserve it in some fs
defined structure. The second approach would be cleaner code design,
that would also ease cross-os porting of filesystems, in my view.
the second approach is the one i was heading towards with my
unfinished a_ops patches. *please* won't someone pay me to do that
work...
NATE
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