Commit 8dbfc14f authored by Filipe Manana's avatar Filipe Manana Committed by David Sterba
Browse files

btrfs: account block group tree when calculating global reserve size 



When using the block group tree feature, this tree is a critical tree just
like the extent, csum and free space trees, and just like them it uses the
delayed refs block reserve.

So take into account the block group tree, and its current size, when
calculating the size for the global reserve.

CC: stable@vger.kernel.org # 6.1+
Signed-off-by: default avatarFilipe Manana <fdmanana@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 95ca6599

fs/btrfs/block-rsv.c

+5 −0
Original line number Diff line number Diff line
@@ -349,6 +349,11 @@ void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info) 
	}

	read_unlock(&fs_info->global_root_lock);



	if (btrfs_fs_compat_ro(fs_info, BLOCK_GROUP_TREE)) {

		num_bytes += btrfs_root_used(&fs_info->block_group_root->root_item);

		min_items++;

	}



	/*

	 * But we also want to reserve enough space so we can do the fallback

	 * global reserve for an unlink, which is an additional