On Thu, May 18, 2017 at 03:17:57PM +0200, Christoph Hellwig wrote:

This series introduces a new blk_status_t error code type for the block
layer so that we can have tigher control and explicit semantics for
block layer errors.

All but the last three patches are cleanups that lead to the new type.

The series it mostly limited to the block layer and drivers, and touching
file systems a little bit.  The only major exception is btrfs, which
does funny things with bios and thus sees a larger amount of propagation
of the new blk_status_t.

JFYI, the patches 13 and 15 are missing, not in linux-btrfs mailbox and
patchwork web. Does not look like a delay, maybe vger refused them
completely.