Bug#624343: A workaround for "bio too big device mdX (Y > Z)" issue

[Roger Shimizu <rogershimizu@gmail.com>]

As mentioned in my previous post, this issue should be fixed in Linux 4.3.

> So the possible fix may be one of them:
> - let the RAID device be able to split the large data, and feed to the
> sub-device by their own queue size. But unfortunately, the patch by
> Kent Overstreet is not accepted by mainline yet [0] [1]. (But maybe
> soon [2], in Linux 4.3?)
> Reference:
> [2] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54efd50bfd873e2dbf784e0b21a8027ba4299a3e

So I tried the same reproducing script, mentioned in previous post, on
linux-image 4.3.0-trunk-686-pae in experimental repo, and confirmed it
cannot be reproduced, without applying my previous workaround.

By a working workaround and fully fixed kernel in experimental repo, I
suggest this issue can be closed.
Thank you!

Cheers,
Roger