[PATCH v2 0/4] null_blk: fixes around nr_devices and log improvements

[Andrà Almeida]

Hello,

This patch series address feedback for a previous patch series sent by
me "docs: block: null_blk: enhance document style"[1].

First patch removes a restriction that prevents null_blk to load with
(nr_devices == 0). This restriction breaks applications, so it's a bug. I
have tested it running the kernel with `null_blk.nr_devices=0`.

In the previous series I have changed the type of var nr_devices, but I
forgot to change the type at module_param(). The second patch fix that.

The third patch uses a cleaver approach to make log messages consistent
using pr_fmt and the last one add a note on how to do that at the
coding style documentation.

Thanks,
	AndrÃ

Changes since v1:
 - Add "Fixes" tag at [2/4]
 - No more headers reordering at [3/4]
 - Use #undef pr_fmt and KBUILD_MODNAME at [3/4] and [4/4]
 - Replace "printk.h" for "kernel.h" at [4/4]

 More details are provided at each patch changelog

[1] https://patchwork.kernel.org/project/linux-block/list/?series=172853

Andrà Almeida (4):
  null_blk: do not fail the module load with zero devices
  null_blk: match the type of parameter nr_devices
  null_blk: format pr_* logs with pr_fmt
  coding-style: add explanation about pr_fmt macro

 Documentation/process/coding-style.rst | 10 +++++++++-
 drivers/block/null_blk.h               |  4 +++-
 drivers/block/null_blk_main.c          | 24 ++++++++++--------------
 drivers/block/null_blk_zoned.c         |  6 +++---
 4 files changed, 25 insertions(+), 19 deletions(-)

-- 
2.23.0