mbcache: automatically delete entries from cache on freeing
Use the fact that entries with elevated refcount are not removed from the hash and just move removal of the entry from the hash to the entry freeing time. When doing this we also change the generic code to hold one reference to the cache entry, not two of them, which makes code somewhat more obvious. Signed-off-by:Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20220712105436.32204-10-jack@suse.cz Signed-off-by:
Theodore Ts'o <tytso@mit.edu>
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