this series add error handle for bdi debugfs register flow, the first three patches try to convert void function to int and do some cleanup if create dir or file fail.
the fourth patch only add a WARN_ON in device_add_disk, no function change. weiping zhang (4): bdi: add check for bdi_debug_root bdi: convert bdi_debug_register to int bdi: add error handle for bdi_debug_register block: add WARN_ON if bdi register fail block/genhd.c | 4 +++- mm/backing-dev.c | 41 +++++++++++++++++++++++++++++++++++------ 2 files changed, 38 insertions(+), 7 deletions(-) -- 2.14.2
