Commit 80ceb057 authored Jun 20, 2011 by Namhyung Kim Committed by Jens Axboe Jun 20, 2011

bsg: fix bsg_poll() to return POLLOUT properly



POLLOUT should be returned only if bd->queued_cmds < bd->max_queue
so that bsg_alloc_command() can proceed.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

parent 2c53b436

block/bsg.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -878,7 +878,7 @@ static unsigned int bsg_poll(struct file file, poll_table wait)
		spin_lock_irq(&bd->lock);
		if (!list_empty(&bd->done_list))
		mask \|= POLLIN \| POLLRDNORM;
		if (bd->queued_cmds >= bd->max_queue)
		if (bd->queued_cmds < bd->max_queue)
		mask \|= POLLOUT;
		spin_unlock_irq(&bd->lock);