Commit e7b62418 authored Nov 13, 2020 by Thomas Gleixner Committed by Mike Snitzer Dec 01, 2020

dm table: Remove BUG_ON(in_interrupt())



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>

parent 89478335

drivers/md/dm-table.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -1247,12 +1247,6 @@ 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);

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