Hi Jens, this series fixes code that incorrectly splits of zoned append bios due to checking for a wrong max_sectors limit. A big part of the cause is that the bio splitting code is a bit of a mess and full of landmines, so I fixed this as well. To hit this bug a submitter needs to submit a bio larger than max_sectors of device, but smaller than max_hw_sectors. So far the only thing that reproduces it is my not yet upstream zoned XFS code, but in theory this could affect every submitter of zone append bios. Diffstat: block/blk-merge.c | 162 ++++++++++++++++++++++--------------------------- block/blk-mq.c | 11 +-- block/blk.h | 70 +++++++++++++++------ fs/btrfs/bio.c | 30 +++++---- include/linux/bio.h | 4 - include/linux/blkdev.h | 3 6 files changed, 153 insertions(+), 127 deletions(-)
