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). Since v2: - 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(-) -- 2.17.1 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
