[BUG] fs/dcache: might_sleep is called under a spinlock
From: Jia-Ju Bai
Date: Mon Oct 02 2017 - 22:56:34 EST
According to fs/dcache.c, might_sleep is called under a spinlock,
and the function call path is:
d_prune_aliases (acquire the spinlock)
This bug is found by my static analysis tool and my code review.
A possible fix is to remove might_sleep in dput.