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author	Samuel Just <sjust@redhat.com>
	Thu, 18 Jan 2024 04:26:07 +0000 (20:26 -0800)
committer	Samuel Just <sjust@redhat.com>
	Thu, 18 Jan 2024 19:56:10 +0000 (11:56 -0800)
commit	9fd22e142ff1482079561c6a9f55adaddcdf413f
tree	f19aeaf6d7f9910ec89981ec96d0053f73bc01ee	tree \| snapshot
parent	10c9fb3240f987b605de6fe7c3c1e66bb32d89aa	commit \| diff

common/intrusive_lru: add clear() mechanism and state for removed items with live references

We need to be able to clear the lru without waiting for all outstanding
references to be released. Items with such references enter an
invalidated state where references can still be added and removed with
deletion at use_count == 0, but can't be accessed any longer via the lru.

Signed-off-by: Samuel Just <sjust@redhat.com>

src/common/intrusive_lru.h		diff \| blob \| history
src/test/common/test_intrusive_lru.cc		diff \| blob \| history

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