Hi Jens, Dan's smatch run pointed out that there is no need to check for a NULL req->bio in the merge bio into request and request merge helpers because they can't ever be reached by flush or passthrough requests. While validing that I also found a few other odd bits directly next to it, so this two-patch series fixes all of that. Diffstat: blk-merge.c | 35 +++++++---------------------------- 1 file changed, 7 insertions(+), 28 deletions(-)