btrfs: zoned: implement active zone tracking
Add zone_is_active flag to btrfs_block_group. This flag indicates the
underlying zones are all active. Such zone active block groups are tracked
by fs_info->active_bg_list.
btrfs_dev_{set,clear}_active_zone() take responsibility for the underlying
device part. They set/clear the bitmap to indicate zone activeness and
count the number of zones we can activate left.
btrfs_zone_{activate,finish}() take responsibility for the logical part and
the list management. In addition, btrfs_zone_finish() wait for any writes
on it and send REQ_OP_ZONE_FINISH to the zone.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 9ce0f9b..0d26819 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2763,8 +2763,9 @@ void btrfs_dump_free_space(struct btrfs_block_group *block_group,
* out the free space after the allocation offset.
*/
if (btrfs_is_zoned(fs_info)) {
- btrfs_info(fs_info, "free space %llu",
- block_group->zone_capacity - block_group->alloc_offset);
+ btrfs_info(fs_info, "free space %llu active %d",
+ block_group->zone_capacity - block_group->alloc_offset,
+ block_group->zone_is_active);
return;
}