diff options
author | Paul Mackerras <paulus@samba.org> | 2008-03-26 08:44:18 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-03-26 08:44:18 +1100 |
commit | 54f53f2b94feb72622bec7a8563fc487d9f97720 (patch) | |
tree | ab0c4e1dcadd25a00fa7a4febf41bc43b864cf73 /include/linux/virtio.h | |
parent | f61fb8a52cdf8b9b6a6badde84aefe58cb35d315 (diff) | |
parent | a4083c9271e0a697278e089f2c0b9a95363ada0a (diff) |
Merge branch 'linux-2.6'
Diffstat (limited to 'include/linux/virtio.h')
-rw-r--r-- | include/linux/virtio.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 260d1fcf29a4..12c18ac1b973 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -43,8 +43,9 @@ struct virtqueue * vq: the struct virtqueue we're talking about. * @enable_cb: restart callbacks after disable_cb. * vq: the struct virtqueue we're talking about. - * This returns "false" (and doesn't re-enable) if there are pending - * buffers in the queue, to avoid a race. + * This re-enables callbacks; it returns "false" if there are pending + * buffers in the queue, to detect a possible race between the driver + * checking for more work, and enabling callbacks. * * Locking rules are straightforward: the driver is responsible for * locking. No two operations may be invoked simultaneously. |