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authorKent Overstreet <kmo@daterainc.com>2014-02-19 19:48:26 -0800
committerKent Overstreet <kmo@daterainc.com>2014-02-25 18:42:49 -0800
commitdabb44334060b4b84051b34c58573e57cc7432b2 (patch)
tree7372c3f3d4d6309c4ee4214494f93c6e7fcc3d58 /drivers/md/bcache
parent1b4eaf3d3809a658c85911e92d9ff64086931efa (diff)
bcache: Fix a shutdown bug
Shutdown wasn't cancelling/waiting on journal_write_work() Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md/bcache')
-rw-r--r--drivers/md/bcache/journal.c9
-rw-r--r--drivers/md/bcache/journal.h1
-rw-r--r--drivers/md/bcache/super.c4
3 files changed, 12 insertions, 2 deletions
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 18039affc306..e38c5997bf12 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -536,6 +536,7 @@ void bch_journal_next(struct journal *j)
atomic_set(&fifo_back(&j->pin), 1);
j->cur->data->seq = ++j->seq;
+ j->cur->dirty = false;
j->cur->need_write = false;
j->cur->data->keys = 0;
@@ -731,7 +732,10 @@ static void journal_write_work(struct work_struct *work)
struct cache_set,
journal.work);
spin_lock(&c->journal.lock);
- journal_try_write(c);
+ if (c->journal.cur->dirty)
+ journal_try_write(c);
+ else
+ spin_unlock(&c->journal.lock);
}
/*
@@ -761,7 +765,8 @@ atomic_t *bch_journal(struct cache_set *c,
if (parent) {
closure_wait(&w->wait, parent);
journal_try_write(c);
- } else if (!w->need_write) {
+ } else if (!w->dirty) {
+ w->dirty = true;
schedule_delayed_work(&c->journal.work,
msecs_to_jiffies(c->journal_delay_ms));
spin_unlock(&c->journal.lock);
diff --git a/drivers/md/bcache/journal.h b/drivers/md/bcache/journal.h
index 9180c4465075..e3c39457afbb 100644
--- a/drivers/md/bcache/journal.h
+++ b/drivers/md/bcache/journal.h
@@ -95,6 +95,7 @@ struct journal_write {
struct cache_set *c;
struct closure_waitlist wait;
+ bool dirty;
bool need_write;
};
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 24a3a1546caa..c70521fe57a6 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1403,6 +1403,10 @@ static void cache_set_flush(struct closure *cl)
if (ca->alloc_thread)
kthread_stop(ca->alloc_thread);
+ cancel_delayed_work_sync(&c->journal.work);
+ /* flush last journal entry if needed */
+ c->journal.work.work.func(&c->journal.work.work);
+
closure_return(cl);
}