btrfs: let btrfs_delete_unused_bgs() to clean relocated bgs
Currently, btrfs_relocate_chunk() is removing relocated BG by itself. But the work can be done by btrfs_delete_unused_bgs() (and it's better since it trim the BG). Let's dedupe the code. While btrfs_delete_unused_bgs() is already hitting the relocated BG, it skip the BG since the BG has "ro" flag set (to keep balancing BG intact). On the other hand, btrfs cannot drop "ro" flag here to prevent additional writes. So this patch make use of "removed" flag. btrfs_delete_unused_bgs() now detect the flag to distinguish whether a read-only BG is relocating or not. Signed-off-by:Naohiro Aota <naohiro.aota@hgst.com> Reviewed-by:
Josef Bacik <jbacik@fb.com> Signed-off-by:
David Sterba <dsterba@suse.com>
parent
49303381
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