Btrfs: free space cache: make sure there is always room for generation number
io_ctl_set_generation() assumes that the generation number shares the same page with inline CRCs. Let's make sure this is always true. Signed-off-by: Zhihui Zhang <zzhsuny@gmail.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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