[PATCH v2 0/5] bitmap: Introduce alloc/free helpers
From: Andy Shevchenko
Date: Fri Jun 15 2018 - 09:20:30 EST
A lot of code is using allocation of bitmaps using BITS_PER_LONG() macro and
sizeof(unsigned long) operator. The readability suffers because of this.
The series introduces three helpers, i.e. bitmap_alloc(), bitmap_zalloc() and
bitmap_free(), to make it more cleaner.
Patch 1 is a preparatory to avoid namespace collisions between bitmap API and
MD bitmap. No functional changes intended.
Patch 2 is just orphaned from previous release cycle.
Patch 3 introduces new helpers.
Patches 4 and 5 is just an example how to use new helpers. Locally I have like
dozen of them against different subsystems and drivers.
Ideally it would go through Input subsystem, thus, needs an Ack from MD maintainer(s).
- added namespace fix patch against MD bitmap API
- moved functions to lib/bitmap.c to avoid circular dependencies
- appended Dmitry's tags
Andy Shevchenko (5):
md: Avoid namespace collision with bitmap API
bitmap: Drop unnecessary 0 check for u32 array operations
bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free()
Input: gpio-keys - Switch to bitmap_zalloc()
Input: evdev - Switch to bitmap_zalloc()
drivers/input/evdev.c | 16 +-
drivers/input/keyboard/gpio_keys.c | 8 +-
drivers/md/dm-raid.c | 6 +-
drivers/md/md-bitmap.c | 301 +++++++++---------
drivers/md/md-bitmap.h | 46 +--
drivers/md/md-cluster.c | 16 +-
drivers/md/md.c | 44 +--
.../md/persistent-data/dm-space-map-common.c | 8 +-
drivers/md/raid1.c | 20 +-
drivers/md/raid10.c | 26 +-
drivers/md/raid5-cache.c | 2 +-
drivers/md/raid5.c | 24 +-
include/linux/bitmap.h | 8 +
lib/bitmap.c | 28 +-
14 files changed, 281 insertions(+), 272 deletions(-)