From: Junxiao Bi junxiao.bi@oracle.com
[ Upstream commit d85400af790dba2aa294f0a77e712f166681f977 ]
Dirty flag of the journal should be cleared at the last stage of umount, if do it before jbd2_journal_destroy(), then some metadata in uncommitted transaction could be lost due to io error, but as dirty flag of journal was already cleared, we can't find that until run a full fsck. This may cause system panic or other corruption.
Link: http://lkml.kernel.org/r/20181121020023.3034-3-junxiao.bi@oracle.com Signed-off-by: Junxiao Bi junxiao.bi@oracle.com Reviewed-by: Yiwen Jiang jiangyiwen@huawei.com Reviewed-by: Joseph Qi jiangqi903@gmail.com Cc: Jun Piao piaojun@huawei.com Cc: Changwei Ge ge.changwei@h3c.com Cc: Joel Becker jlbec@evilplan.org Cc: Mark Fasheh mfasheh@versity.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ocfs2/journal.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index c492cbb2410f6..4c7e9b8dca316 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1018,7 +1018,8 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb) mlog_errno(status); }
- if (status == 0) { + /* Shutdown the kernel journal system */ + if (!jbd2_journal_destroy(journal->j_journal) && !status) { /* * Do not toggle if flush was unsuccessful otherwise * will leave dirty metadata in a "clean" journal @@ -1027,9 +1028,6 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb) if (status < 0) mlog_errno(status); } - - /* Shutdown the kernel journal system */ - jbd2_journal_destroy(journal->j_journal); journal->j_journal = NULL;
OCFS2_I(inode)->ip_open_count--;