request merge changes?

[Jens Axboe]

Hi,

I just ported a project from 2.3.26 to 2.3.39 and I'm witnessing
a strange request effect. Doing

dd if=/dev/zero of=/dev/cdrw bs=2048 count=32

I was relieing on the ll_rw_block layer to correctly handle
request merging and this was fine in 2.3.26. I would receive
a single clustered request. In 2.3.39 I actually get two requests,
one with the first block and a second with the remaining merged.

Surely this isn't the intended effect. Comments?

-- 
*  Jens Axboe <axboe en suse.de>
*  Linux CD-ROM Maintainer
*  http://www.kernel.dk

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo en vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/