btrfs: fix free space calculation in dump_space_info() (39581a3a) · Commits · 戴 / test

In btrfs, btrfs_space_info's bytes_may_use is treated as fs used space, as what we do in reserve_metadata_bytes() or btrfs_alloc_data_chunk_ondemand(), so in dump_space_info(), when calculating free space, we should also subtract btrfs_space_info's bytes_may_use. Signed-off-by:

Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Reviewed-by:

David Sterba <dsterba@suse.com> Signed-off-by:

David Sterba <dsterba@suse.com>

fs/btrfs/extent-tree.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -7906,8 +7906,8 @@ static void dump_space_info(struct btrfs_space_info *info, u64 bytes,
		printk(KERN_INFO "BTRFS: space_info %llu has %llu free, is %sfull\n",
		info->flags,
		info->total_bytes - info->bytes_used - info->bytes_pinned -
		info->bytes_reserved - info->bytes_readonly,
		(info->full) ? "" : "not ");
		info->bytes_reserved - info->bytes_readonly -
		info->bytes_may_use, (info->full) ? "" : "not ");
		printk(KERN_INFO "BTRFS: space_info total=%llu, used=%llu, pinned=%llu, "
		"reserved=%llu, may_use=%llu, readonly=%llu\n",
		info->total_bytes, info->bytes_used, info->bytes_pinned,

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