On Tue, Apr 20, 2021 at 12:58:27PM +0800, Su Yue wrote:

Resize to nums without sign prefix makes false output:
 btrfs fi resize 1:150g /srv/extra
Resize device id 1 (/dev/sdb1) from 298.09GiB to 0.00B

The resize operation would take effect though.

check_resize_args() does not handle the mod 0 case and new_size is 0.
Simply assigning @diff to @new_size to fix this.

Issue: #307
Reported-by: Chris Murphy <redacted>
Signed-off-by: Su Yue <redacted>
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Changelog:
v3:
  Just assign @diff to @new_size. (Boris Burkov)

Patch replaced in devel, thanks.