Messages in this thread Patch in this message |  | | Date | Fri, 31 Jan 2020 16:07:10 +0100 | From | Peter Zijlstra <> | Subject | [PATCH -v2 7/7] locking/percpu-rwsem: Add might_sleep() for writer locking |
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From: Davidlohr Bueso <dave@stgolabs.net>
We are missing this annotation in percpu_down_write(). Correct this.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200108013305.7732-1-dave@stgolabs.net --- kernel/locking/percpu-rwsem.c | 1 + 1 file changed, 1 insertion(+)
--- a/kernel/locking/percpu-rwsem.c +++ b/kernel/locking/percpu-rwsem.c @@ -212,6 +212,7 @@ static bool readers_active_check(struct void percpu_down_write(struct percpu_rw_semaphore *sem) { + might_sleep(); rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_); /* Notify readers to take the slow path. */
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