Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- drivers/block/loop.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 836a53eef4b4..84b007b9c38c 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -311,6 +311,13 @@ static void loop_clear_limits(struct loop_device *lo, int mode) lim.discard_granularity = 0; } + /* + * XXX: this updates the queue limits without freezing the queue, which + * is against the locking protocol and dangerous. But we can't just + * freeze the queue as we're inside the ->queue_rq method here. So this + * should move out into a workqueue unless we get the file operations to + * advertise if they support specific fallocate operations. + */ queue_limits_commit_update(lo->lo_queue, &lim); } -- 2.45.2
