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| author | Dennis Zhou <dennis@kernel.org> | 2020-01-03 00:26:39 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-01-20 18:41:00 +0300 |
| commit | 7fe6d45e4009d9502fef32ac6222862ac17f8674 (patch) | |
| tree | 870db67c211f8be19b54e97ae253f6600c846af5 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 19b2a2c71979f849cadc33af3577f739cc95e1f0 (diff) | |
| download | linux-7fe6d45e4009d9502fef32ac6222862ac17f8674.tar.xz | |
btrfs: have multiple discard lists
Non-block group destruction discarding currently only had a single list
with no minimum discard length. This can lead to caravaning more
meaningful discards behind a heavily fragmented block group.
This adds support for multiple lists with minimum discard lengths to
prevent the caravan effect. We promote block groups back up when we
exceed the BTRFS_ASYNC_DISCARD_MAX_FILTER size, currently we support
only 2 lists with filters of 1MB and 32KB respectively.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions