diff options
| author | Naohiro Aota <naohiro.aota@wdc.com> | 2024-11-14 11:04:29 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2025-01-13 16:53:14 +0300 |
| commit | 453a73c3069a268c3c4dd00695fc2a95f7880438 (patch) | |
| tree | 1a51276e63990e0954f6c68ec43026ab044dbd30 /include/trace | |
| parent | 7de9ca1f30b7002a237e3119a8a4a54f26988b92 (diff) | |
| download | linux-453a73c3069a268c3c4dd00695fc2a95f7880438.tar.xz | |
btrfs: zoned: reclaim unused zone by zone resetting
On the zoned mode, once used and freed region is still not reusable after the
freeing. The underlying zone needs to be reset before reusing. Btrfs resets a
zone when it removes a block group, and then new block group is allocated on
the zones to reuse the zones. But, it is sometime too late to catch up with a
write side.
This commit introduces a new space-info reclaim method ZONE_RESET. That will
pick a block group from the unused list and reset its zone to reuse the
zone_unusable space. It is faster than removing the block group and re-creating
a new block group on the same zones.
For the first implementation, the ZONE_RESET is only applied to a block group
whose region is fully zone_unusable. Reclaiming partial zone_unusable block
group could be implemented later.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/btrfs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 4df93ca9b7a8..549ab3b41961 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -100,7 +100,8 @@ struct find_free_extent_ctl; EM( ALLOC_CHUNK, "ALLOC_CHUNK") \ EM( ALLOC_CHUNK_FORCE, "ALLOC_CHUNK_FORCE") \ EM( RUN_DELAYED_IPUTS, "RUN_DELAYED_IPUTS") \ - EMe(COMMIT_TRANS, "COMMIT_TRANS") + EM( COMMIT_TRANS, "COMMIT_TRANS") \ + EMe(RESET_ZONES, "RESET_ZONES") /* * First define the enums in the above macros to be exported to userspace via |