> include/linux/blk.h
>
> Changed NR_REQUEST from 256 to 16. This reduces the number of
> requests that can be queued. The size of the queue is reduced
> from 16K to 1K.
You can do even more than this -- I dunno what I/O interface these
embedded system generally uses (the mtd stuff?). Provided you provide a
direct make_request_fn entry into these instead of using the queue, you
can basically cut all of ll_rw_blk.c and elevator.c. ll_rw_block,
submit_bh, and generic_make_request would be all that is left.
That should reclaim quite a lot of space. If there's any interest in
this (has it already been done?), I can help out getting it done.
-- Jens Axboe- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:21 EST