btrfs: use iget5_locked_rcu

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With 20 threads each walking a dedicated 1000 dirs * 1000 files
directory tree to stat(2) on a 32 core + 24GB ram vm:

before: 3.54s user 892.30s system 1966% cpu 45.549 total
after:  3.28s user 738.66s system 1955% cpu 37.932 total (-16.7%)

Benchmark can be found here: https://people.freebsd.org/~mjg/fstree.tgz

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20240611173824.535995-3-mjguzik@gmail.com
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Mateusz Guzik 2024-06-11 19:38:23 +02:00 • committed by Christian Brauner

parent 7180f8d91f

commit 3a8e2f99f1

1 changed files with 1 additions and 1 deletions

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fs/btrfs/inode.c

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