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Subject[PATCH 0/5] Implement bitlock map allocator
Currently, bit-based lock e.g. bit_spin_lock cannot use the lock
correctness validator using lockdep. However, it would be useful if
the validator supports for even bit-based lock as well.

Therefore, this patch provides interface for allocation and freeing
lockdep_map for bit-based lock so that the bit-based lock can also use
the lock correctness validator with the lockdep_map, allocated for each
bit address.

This patch can be applied to any bit_spin_lock user except slab
allocator where I am not sure if using kmalloc is safe. Anyway I chose
two example to apply bitlock map allocator, zram and buffer head.
And applied it and included it in this patch set.

Byungchul Park (5):
lockdep: Implement bitlock map allocator
lockdep: Apply bitlock to bit_spin_lock
lockdep: Apply bit_spin_lock lockdep to zram
fs/buffer.c: Remove trailing white space
lockdep: Apply bit_spin_lock lockdep to BH_Uptodate_Lock

drivers/block/zram/zram_drv.c | 10 +++
fs/buffer.c | 24 +++----
include/linux/bit_spinlock.h | 57 ++++++++++++++--
include/linux/bitlock.h | 20 ++++++
kernel/locking/Makefile | 1 +
kernel/locking/bitlock_map.c | 147 ++++++++++++++++++++++++++++++++++++++++++
lib/Kconfig.debug | 10 +++
7 files changed, 252 insertions(+), 17 deletions(-)
create mode 100644 include/linux/bitlock.h
create mode 100644 kernel/locking/bitlock_map.c


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