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PM / Sleep: JBD and JBD2 missing set_freezable()

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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>
This commit is contained in:
Nigel Cunningham 2012-02-03 19:59:41 +11:00 committed by Rafael J. Wysocki
parent 37f08be11b
commit 35c80422af
2 changed files with 4 additions and 0 deletions
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2
fs/jbd/journal.c
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@ -129,6 +129,8 @@ static int kjournald(void *arg)
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);

2
fs/jbd2/journal.c
View file

@ -139,6 +139,8 @@ static int kjournald2(void *arg)
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);