[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Sat, 12 Dec 2020 11:09:09 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Mike Snitzer <snitzer@...hat.com>,
Sasha Levin <sashal@...nel.org>, dm-devel@...hat.com,
linux-raid@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 5/5] dm table: Remove BUG_ON(in_interrupt())
From: Thomas Gleixner <tglx@...utronix.de>
[ 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@...utronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Mike Snitzer <snitzer@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/md/dm-table.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 2d3ff028f50c9..62e3dc19b6099 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1250,12 +1250,6 @@ 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);
--
2.27.0
Powered by blists - more mailing lists