dm bufio: add lock_history optimization for cache iterators

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Sometimes it is beneficial to repeatedly get and drop locks as part of
an iteration.  Introduce lock_history struct to help avoid redundant
drop and gets of the same lock.

Optimizes cache_iterate, cache_mark_many and cache_evict.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

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Joe Thornber 2023-03-24 23:01:03 -04:00 • committed by Mike Snitzer

parent 450e8dee51

commit 791188065b

1 changed files with 111 additions and 8 deletions

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drivers/md/dm-bufio.c

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