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authorTheodore Ts'o <tytso@mit.edu>2017-02-04 23:14:19 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-12 06:41:45 +0100
commita9b0c14ba1e4be94036c5725c144818a2d3be191 (patch)
treedaa3fb37abd80ed526a998cebf3d52e7a4cb2980 /fs/jbd2
parent3de5a92847c1d87d86ee945e6002f2051e02e868 (diff)
jbd2: don't leak modified metadata buffers on an aborted journal
commit e112666b4959b25a8552d63bc564e1059be703e8 upstream. If the journal has been aborted, we shouldn't mark the underlying buffer head as dirty, since that will cause the metadata block to get modified. And if the journal has been aborted, we shouldn't allow this since it will almost certainly lead to a corrupted file system. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/jbd2')
-rw-r--r--fs/jbd2/transaction.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index e1652665bd93..5e659ee08d6a 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1863,7 +1863,9 @@ static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
__blist_del_buffer(list, jh);
jh->b_jlist = BJ_None;
- if (test_clear_buffer_jbddirty(bh))
+ if (transaction && is_journal_aborted(transaction->t_journal))
+ clear_buffer_jbddirty(bh);
+ else if (test_clear_buffer_jbddirty(bh))
mark_buffer_dirty(bh); /* Expose it to the VM */
}