erofs-utils: compress trailing data for big pcluster properly

Compress in smaller pcluster size if the trailing data isn't enough for
maximum pcluster size instead of leaving trailing data uncompressed.

Fixes: b71dc92df6f1 ("erofs-utils: mkfs: support multiple block compression")
Link: https://lore.kernel.org/r/20210510072303.4628-2-xiang@kernel.org
Signed-off-by: Gao Xiang <xiang@kernel.org>
2 files changed