tree fc3917cd7b3fae605e464f94af815dc9d9cce36f
parent 7512487e6d6459e4c3f9c7cedc53050a6c30e387
author Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1264934800 +0900
committer Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1266031563 +0900

nilfs2: fix potential hang in nilfs_error on errors=remount-ro

nilfs_error() calls nilfs_detach_segment_constructor() if
errors=remount-ro option is specified, and this may lead to a hang due
to recursive locking of, for instance, nilfs->ns_segctor_sem and
others.

In this case, detaching segment constructor is not necessary because
read-only flag is set to the filesystem and further writes are
blocked.

This fixes the potential hang issue by removing the
nilfs_detach_segment_constructor() call from nilfs_error.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>