diff options
| author | Dennis Zhou <[email protected]> | 2020-01-02 16:26:43 -0500 |
|---|---|---|
| committer | David Sterba <[email protected]> | 2020-01-20 16:41:00 +0100 |
| commit | 5d90c5c75711d9734e9d3d38a6e3b849b7bea742 (patch) | |
| tree | 292665441c12c09e4959c5871249ebfa4b56662a /scripts/bpf_helpers_doc.py | |
| parent | dbc2a8c92756507e8183a4c23a02fa2a994eb640 (diff) | |
btrfs: increase the metadata allowance for the free_space_cache
Currently, there is no way for the free space cache to recover from
being serviced by purely bitmaps because the extent threshold is set to
0 in recalculate_thresholds() when we surpass the metadata allowance.
This adds a recovery mechanism by keeping large extents out of the
bitmaps and increases the metadata upper bound to 64KB. The recovery
mechanism bypasses this upper bound, thus making it a soft upper bound.
But, with the bypass being 1MB or greater, it shouldn't add unbounded
overhead.
Reviewed-by: Josef Bacik <[email protected]>
Signed-off-by: Dennis Zhou <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions