From: Zhang Yi yi.zhang@huawei.com
hulk inclusion category: bugfix bugzilla: 50788 CVE: NA ---------------------------
This reverts commit b8ac39c4a77a4ab351526d3b3afbe18c626d2ebd. Prepare to backport 235d68069cbd ("jbd2: don't abort the journal when freeing buffers")
Signed-off-by: Zhang Yi yi.zhang@huawei.com Reviewed-by: Yang Erkun yangerkun@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/jbd2/transaction.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 4055929a043cf..ffa6d3530f4bd 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -2085,6 +2085,7 @@ int jbd2_journal_try_to_free_buffers(journal_t *journal, { struct buffer_head *head; struct buffer_head *bh; + bool has_write_io_error = false; int ret = 0;
J_ASSERT(PageLocked(page)); @@ -2109,10 +2110,26 @@ int jbd2_journal_try_to_free_buffers(journal_t *journal, jbd_unlock_bh_state(bh); if (buffer_jbd(bh)) goto busy; + + /* + * If we free a metadata buffer which has been failed to + * write out, the jbd2 checkpoint procedure will not detect + * this failure and may lead to filesystem inconsistency + * after cleanup journal tail. + */ + if (buffer_write_io_error(bh)) { + pr_err("JBD2: Error while async write back metadata bh %llu.", + (unsigned long long)bh->b_blocknr); + has_write_io_error = true; + } } while ((bh = bh->b_this_page) != head);
ret = try_to_free_buffers(page); + busy: + if (has_write_io_error) + jbd2_journal_abort(journal, -EIO); + return ret; }