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Subject[PATCH v2 0/3] 'slot' can be NULL in radix_tree_next_slot()
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This adds comments above radix_tree_next_slot() documenting the combination
of factors that prevent us from dereferencing a NULL 'slot' pointer. It
also adds a radix tree unit test so that we can easily catch any unhandled
NULL pointer issues with radix_tree_next_slot().

Changes from V1:
- Instead of adding an explicit check for 'slot' being NULL at the
beginning of radix_tree_next_slot(), document what factors are keeping
us safe instead. (Konstantin)

Ross Zwisler (3):
radix-tree: 'slot' can be NULL in radix_tree_next_slot()
radix-tree tests: add iteration test
radix-tree tests: properly initialize mutex

include/linux/radix-tree.h | 8 ++
tools/testing/radix-tree/Makefile | 3 +-
tools/testing/radix-tree/iteration_check.c | 180 +++++++++++++++++++++++++++++
tools/testing/radix-tree/main.c | 1 +
tools/testing/radix-tree/regression1.c | 2 +-
tools/testing/radix-tree/test.h | 1 +
6 files changed, 193 insertions(+), 2 deletions(-)
create mode 100644 tools/testing/radix-tree/iteration_check.c

--
2.9.0

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