[PATCH v2 4/9] vhost/scsi: Don't reinvent the wheel but use existing llist API

From: Byungchul Park
Date: Mon Feb 13 2017 - 02:22:12 EST


Although llist provides proper APIs, they are not used. Make them used.

Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx>
---
drivers/vhost/scsi.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 253310c..a4cb966 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -496,14 +496,12 @@ static void vhost_scsi_evt_work(struct vhost_work *work)
struct vhost_scsi *vs = container_of(work, struct vhost_scsi,
vs_event_work);
struct vhost_virtqueue *vq = &vs->vqs[VHOST_SCSI_VQ_EVT].vq;
- struct vhost_scsi_evt *evt;
+ struct vhost_scsi_evt *evt, *t;
struct llist_node *llnode;

mutex_lock(&vq->mutex);
llnode = llist_del_all(&vs->vs_event_list);
- while (llnode) {
- evt = llist_entry(llnode, struct vhost_scsi_evt, list);
- llnode = llist_next(llnode);
+ llist_for_each_entry_safe(evt, t, llnode, list) {
vhost_scsi_do_evt_work(vs, evt);
vhost_scsi_free_evt(vs, evt);
}
@@ -529,10 +527,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)

bitmap_zero(signal, VHOST_SCSI_MAX_VQ);
llnode = llist_del_all(&vs->vs_completion_list);
- while (llnode) {
- cmd = llist_entry(llnode, struct vhost_scsi_cmd,
- tvc_completion_list);
- llnode = llist_next(llnode);
+ llist_for_each_entry(cmd, llnode, tvc_completion_list) {
se_cmd = &cmd->tvc_se_cmd;

pr_debug("%s tv_cmd %p resid %u status %#02x\n", __func__,
--
1.9.1