Otherwise the while() loop in dm_wq_requeue_work() can result in a
"dead loop" on systems that have preemption disabled. This is
particularly problematic on single cpu systems.
Fixes: 8b211aaccb915 ("dm: add two stage requeue mechanism")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
---
drivers/md/dm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 15b91959e433..adb002b8648d 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1009,6 +1009,7 @@ static void dm_wq_requeue_work(struct work_struct *work)
io->next = NULL;
__dm_io_complete(io, false);
io = next;
+ cond_resched();
}
}
--
2.37.0 (Apple Git-136)
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