PM / Sleep: JBD and JBD2 missing set_freezable()
With the latest and greatest changes to the freezer, I started seeing
panics that were caused by jbd2 running post-process freezing and
hitting the canary BUG_ON for non-TuxOnIce I/O submission. I've traced
this back to a lack of set_freezable calls in both jbd and jbd2. Since
they're clearly meant to be frozen (there are tests for freezing()), I
submit the following patch to add the missing calls.
Signed-off-by: Nigel Cunningham <nigel@tuxonice.net>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index c0a5f9f..663e47c 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -139,6 +139,8 @@
setup_timer(&journal->j_commit_timer, commit_timeout,
(unsigned long)current);
+ set_freezable();
+
/* Record that the journal thread is running */
journal->j_task = current;
wake_up(&journal->j_wait_done_commit);