dm table: Remove BUG_ON(in_interrupt())

[ Upstream commit e7b624183d921b49ef0a96329f21647d38865ee9 ]

The BUG_ON(in_interrupt()) in dm_table_event() is a historic leftover from
a rework of the dm table code which changed the calling context.

Issuing a BUG for a wrong calling context is frowned upon and
in_interrupt() is deprecated and only covering parts of the wrong
contexts. The sanity check for the context is covered by
CONFIG_DEBUG_ATOMIC_SLEEP and other debug facilities already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 36275c59e4e7b06aa41c45fc36d5d4b30637486b..f849db3035a05ade49ca530e8b5fe4851126ad19 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1336,12 +1336,6 @@ void dm_table_event_callback(struct dm_table *t,
 
 void dm_table_event(struct dm_table *t)
 {
-       /*
-        * You can no longer call dm_table_event() from interrupt
-        * context, use a bottom half instead.
-        */
-       BUG_ON(in_interrupt());
-
        mutex_lock(&_event_lock);
        if (t->event_fn)
                t->event_fn(t->event_context);