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| author | Joe Thornber <ejt@redhat.com> | 2023-03-29 10:29:34 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-03-30 15:57:51 -0400 |
| commit | 363b7fd76c91dc611a56d992e9550bb1ba070e1a (patch) | |
| tree | a8871fafe3b50344d8ff12a4fc7403cfdfd9772a /lib/bug.c | |
| parent | b6279f82eb11a1f380af3a26acf921c37505fc86 (diff) | |
| download | linux-stable-363b7fd76c91dc611a56d992e9550bb1ba070e1a.tar.gz linux-stable-363b7fd76c91dc611a56d992e9550bb1ba070e1a.tar.bz2 linux-stable-363b7fd76c91dc611a56d992e9550bb1ba070e1a.zip | |
dm: improve hash_locks sizing and hash function
Both bufio and bio-prison-v1 use the identical model for splitting
their respective locks and rbtrees. Improve dm_num_hash_locks() to
distribute across more rbtrees to improve overall performance -- but
the maximum number of locks/rbtrees is still 64.
Also factor out a common hash function named dm_hash_locks_index(),
the magic numbers used were determined to be best using this program:
https://gist.github.com/jthornber/e05c47daa7b500c56dc339269c5467fc
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'lib/bug.c')
0 files changed, 0 insertions, 0 deletions