diff mbox

[16/33] xen/scsiback: Replace a waitqueue and a counter by a completion

Message ID 20170523234854.21452-17-bart.vanassche@sandisk.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bart Van Assche May 23, 2017, 11:48 p.m. UTC
This patch simplifies the implementation of the scsiback driver
but does not change its behavior.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: David Disseldorp <ddiss@suse.de>
Cc: xen-devel@lists.xenproject.org
---
 drivers/xen/xen-scsiback.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

Comments

Juergen Gross May 26, 2017, 10:13 a.m. UTC | #1
On 24/05/17 01:48, Bart Van Assche wrote:
> This patch simplifies the implementation of the scsiback driver
> but does not change its behavior.
> 
> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
> Cc: Juergen Gross <jgross@suse.com>
> Cc: Christoph Hellwig <hch@lst.de>
> Cc: Hannes Reinecke <hare@suse.com>
> Cc: David Disseldorp <ddiss@suse.de>
> Cc: xen-devel@lists.xenproject.org

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen
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Nicholas A. Bellinger June 3, 2017, 5:41 a.m. UTC | #2
On Tue, 2017-05-23 at 16:48 -0700, Bart Van Assche wrote:
> This patch simplifies the implementation of the scsiback driver
> but does not change its behavior.
> 
> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
> Cc: Juergen Gross <jgross@suse.com>
> Cc: Christoph Hellwig <hch@lst.de>
> Cc: Hannes Reinecke <hare@suse.com>
> Cc: David Disseldorp <ddiss@suse.de>
> Cc: xen-devel@lists.xenproject.org
> ---
>  drivers/xen/xen-scsiback.c | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)

Applied.

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diff mbox

Patch

diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 980f32817305..4cb33a0916a8 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -135,8 +135,7 @@  struct vscsibk_pend {
 
 	struct se_cmd se_cmd;
 
-	atomic_t tmr_complete;
-	wait_queue_head_t tmr_wait;
+	struct completion tmr_done;
 };
 
 #define VSCSI_DEFAULT_SESSION_TAGS	128
@@ -600,7 +599,7 @@  static void scsiback_device_action(struct vscsibk_pend *pending_req,
 	u64 unpacked_lun = pending_req->v2p->lun;
 	int rc, err = FAILED;
 
-	init_waitqueue_head(&pending_req->tmr_wait);
+	init_completion(&pending_req->tmr_done);
 
 	rc = target_submit_tmr(&pending_req->se_cmd, nexus->tvn_se_sess,
 			       &pending_req->sense_buffer[0],
@@ -609,8 +608,7 @@  static void scsiback_device_action(struct vscsibk_pend *pending_req,
 	if (rc)
 		goto err;
 
-	wait_event(pending_req->tmr_wait,
-		   atomic_read(&pending_req->tmr_complete));
+	wait_for_completion(&pending_req->tmr_done);
 
 	err = (se_cmd->se_tmr_req->response == TMR_FUNCTION_COMPLETE) ?
 		SUCCESS : FAILED;
@@ -1443,8 +1441,7 @@  static void scsiback_queue_tm_rsp(struct se_cmd *se_cmd)
 	struct vscsibk_pend *pending_req = container_of(se_cmd,
 				struct vscsibk_pend, se_cmd);
 
-	atomic_set(&pending_req->tmr_complete, 1);
-	wake_up(&pending_req->tmr_wait);
+	complete(&pending_req->tmr_done);
 }
 
 static void scsiback_aborted_task(struct se_cmd *se_cmd)