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generic radix trees

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Very simple radix tree implementation that supports storing arbitrary
size entries, up to PAGE_SIZE - upcoming patches will convert existing
flex_array users to genradixes.  The new genradix code has a much
simpler API and implementation, and doesn't have a hard limit on the
number of elements like flex_array does.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Kent Overstreet <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Eric Paris <[email protected]>
Cc: Marcelo Ricardo Leitner <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Neil Horman <[email protected]>
Cc: Paul Moore <[email protected]>
Cc: Pravin B Shelar <[email protected]>
Cc: Shaohua Li <[email protected]>
Cc: Stephen Smalley <[email protected]>
Cc: Vlad Yasevich <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kent Overstreet 2019-03-11 23:31:14 -07:00 • committed by Linus Torvalds
commit ba20ba2e37
5 changed files with 463 additions and 1 deletions
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3
lib/Makefile
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@ -38,7 +38,8 @@ obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
bsearch.o find_bit.o llist.o memweight.o kfifo.o \
percpu-refcount.o rhashtable.o reciprocal_div.o \
once.o refcount.o usercopy.o errseq.o bucket_locks.o
once.o refcount.o usercopy.o errseq.o bucket_locks.o \
generic-radix-tree.o
obj-$(CONFIG_STRING_SELFTEST) += test_string.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o