[ Upstream commit 991bd8d7bc78966b4dc427b53a144f276bffcd52 ]
Some architectures have pages larger than 4k and committing a full
page causes needless overhead.
Fix this by writing a single block when committing the superblock.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>