linux-kernel - [PATCH] virtio_blk.c: Add documentation for vring_enable

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Date:	Wed, 19 May 2010 17:50:48 +0200
From:	Jes.Sorensen@...hat.com
To:	rusty@...tcorp.com.au
Cc:	mst@...hat.com, linux-kernel@...r.kernel.org,
	Jes Sorensen <Jes.Sorensen@...hat.com>
Subject: [PATCH] virtio_blk.c: Add documentation for vring_enable_cb()

From: Jes Sorensen <Jes.Sorensen@...hat.com>

Hi,

This patch adds a bit of documentation to vring_enable_cb() to make it
crystal clear that the function returns false when there is more work
to do and true when the queue is empty.

I wasted several hours trying to figure out why a piece of code wasn't
working due to this, and I know others hit the same problem. Hopefully
this can save a bit of suffering for others in the future.

Cheers,
Jes

Jes Sorensen (1):
  Add documentation for vring_enable_cb()

 drivers/virtio/virtio_ring.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

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