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| author |   Dennis Zhou <dennis@kernel.org> | 2020-01-02 16:26:39 -0500 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2020-01-20 16:41:00 +0100 |
| commit | 7fe6d45e4009d9502fef32ac6222862ac17f8674 (patch) | |
| tree | 870db67c211f8be19b54e97ae253f6600c846af5 /ipc | |
| parent | btrfs: make max async discard size tunable (diff) | |
| download | linux-dev-7fe6d45e4009d9502fef32ac6222862ac17f8674.tar.xz linux-dev-7fe6d45e4009d9502fef32ac6222862ac17f8674.zip | |
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 'ipc')
0 files changed, 0 insertions, 0 deletions