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btrfs: account block group tree when calculating global reserve size 

commit 8dbfc14fc7 upstream.

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: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Filipe Manana 2023-07-20 12:44:33 +01:00 committed by Greg Kroah-Hartman
parent 5fec6f7903
commit cbec34d302
1 changed files with 5 additions and 0 deletions
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5
fs/btrfs/block-rsv.c
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@ -377,6 +377,11 @@ 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 5 items (see the