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btrfs: introduce chunk allocation policy

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Introduce chunk allocation policy for btrfs. This policy controls how
chunks and device extents are allocated from devices.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota
2020-02-25 12:56:08 +09:00
committed by David Sterba
parent b25c19f49e
commit c4a816c67c
2 changed files with 7 additions and 0 deletions
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fs/btrfs/volumes.c
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@@ -1205,6 +1205,7 @@ static int open_fs_devices(struct btrfs_fs_devices *fs_devices,
fs_devices->opened = 1;
fs_devices->latest_bdev = latest_dev->bdev;
fs_devices->total_rw_bytes = 0;
fs_devices->chunk_alloc_policy = BTRFS_CHUNK_ALLOC_REGULAR;
out:
return ret;
}