[PATCH 11/13] btrfs: zoned: activate necessary block group

[Naohiro Aota <naohiro.aota@wdc.com>]

There are two places where allocating a chunk is not enough. These two
places are trying to ensure the space by allocating a chunk. To meet the
condition for active_total_bytes, we also need to activate a block group
there.

CC: stable@vger.kernel.org # 5.16+
Fixes: afba2bc036b0 ("btrfs: zoned: implement active zone tracking")
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 fs/btrfs/block-group.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index 51e7c1f1d93f..1c22cfe91a65 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -2664,6 +2664,11 @@ int btrfs_inc_block_group_ro(struct btrfs_block_group *cache,
 	ret = btrfs_chunk_alloc(trans, alloc_flags, CHUNK_ALLOC_FORCE);
 	if (ret < 0)
 		goto out;
+	/*
+	 * We have allocated a new chunk. We also need to activate that chunk to
+	 * grant metadata tickets for zoned btrfs.
+	 */
+	btrfs_zoned_activate_one_bg(fs_info, cache->space_info, true);
 	ret = inc_block_group_ro(cache, 0);
 	if (ret == -ETXTBSY)
 		goto unlock_out;
@@ -3889,6 +3894,12 @@ static void reserve_chunk_space(struct btrfs_trans_handle *trans,
 		if (IS_ERR(bg)) {
 			ret = PTR_ERR(bg);
 		} else {
+			/*
+			 * We have a new chunk. We also need to activate it for
+			 * zoned btrfs.
+			 */
+			btrfs_zoned_activate_one_bg(fs_info, info, true);
+
 			/*
 			 * If we fail to add the chunk item here, we end up
 			 * trying again at phase 2 of chunk allocation, at
-- 
2.35.1