btrfs: zoned: update meta write pointer on zone finish

On finishing a zone, the meta_write_pointer should be set of the end of the
zone to reflect the actual write pointer position.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.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>

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 9af3cd9..d718868 100644 (file)
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -2049,6 +2049,9 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ
 
        clear_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags);
        block_group->alloc_offset = block_group->zone_capacity;
+       if (block_group->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM))
+               block_group->meta_write_pointer = block_group->start +
+                                                 block_group->zone_capacity;
        block_group->free_space_ctl->free_space = 0;
        btrfs_clear_treelog_bg(block_group);
        btrfs_clear_data_reloc_bg(block_group);