Description: nilfs2: fix hang in nilfs_lookup_dirty_data_buffers()
References:
Notes:
 carnil> Introduced in 1d1d1a767206 ("mm: only enforce stable page writes if the backing
 carnil> device requires it"). Vulnerable versions: 3.9-rc1 3.10.93 3.12.51 3.14.57
 carnil> 3.16.35 3.18.25 4.1.13 4.2.6.
Bugs:
upstream: released (6.8-rc4) [38296afe3c6ee07319e01bb249aa4bb47c07b534]
6.7-upstream-stable: released (6.7.6) [e38585401d464578d30f5868ff4ca54475c34f7d]
6.6-upstream-stable: released (6.6.18) [ea5ddbc11613b55e5128c85f57b08f907abd9b28]
6.1-upstream-stable: released (6.1.79) [8494ba2c9ea00a54d5b50e69b22c55a8958bce32]
5.10-upstream-stable: released (5.10.210) [98a4026b22ff440c7f47056481bcbbe442f607d6]
4.19-upstream-stable: released (4.19.307) [228742b2ddfb99dfd71e5a307e6088ab6836272e]
sid: released (6.7.7-1)
6.1-bookworm-security: released (6.1.82-1)
5.10-bullseye-security: needed
4.19-buster-security: needed