btrfs: zlib: use copy_page for full page copy

The copy_page helper may use an optimized version for full page copy
(eg. on s390 there's a special instruction for that), there's one more
left to convert.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2022-10-31 20:33:40 +01:00
commit 9e5e6d4e2e