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

From: Andrà Almeida
Date: Fri Sep 13 2019 - 14:59:01 EST


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.


[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 module parameter
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(-)