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Date: Tue, 5 Apr 2011 07:05:06 -0700
From: "K. Y. Srinivasan" <kys@...rosoft.com>
To: gregkh@...e.de, linux-kernel@...r.kernel.org,
devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Abhishek Kane <v-abkane@...rosoft.com>,
Hank Janssen <hjanssen@...rosoft.com>
Subject: [PATCH 22/22] Staging: hv: Get rid of synch primitive in struct blkvsc_request
Get rid of synch primitive in struct blkvsc_request and instead use the
synch primitive already embedded in the struct hv_storvsc_request structure.
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
Signed-off-by: Abhishek Kane <v-abkane@...rosoft.com>
Signed-off-by: Hank Janssen <hjanssen@...rosoft.com>
---
drivers/staging/hv/blkvsc_drv.c | 52 +++++++++++---------------------------
1 files changed, 15 insertions(+), 37 deletions(-)
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 86e0506..9af5347 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -72,9 +72,6 @@ struct blkvsc_request {
/* The group this request is part of. Maybe null */
struct blkvsc_request_group *group;
- wait_queue_head_t wevent;
- int cond;
-
int write;
sector_t sector_start;
unsigned long sector_count;
@@ -515,7 +512,7 @@ static int blkvsc_do_flush(struct block_device_context *blkdev)
return -ENOMEM;
memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
- init_waitqueue_head(&blkvsc_req->wevent);
+ init_completion(&blkvsc_req->request.wait_event);
blkvsc_req->dev = blkdev;
blkvsc_req->req = NULL;
blkvsc_req->write = 0;
@@ -527,14 +524,9 @@ static int blkvsc_do_flush(struct block_device_context *blkdev)
blkvsc_req->cmnd[0] = SYNCHRONIZE_CACHE;
blkvsc_req->cmd_len = 10;
- /*
- * Set this here since the completion routine may be invoked and
- * completed before we return
- */
- blkvsc_req->cond = 0;
blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
- wait_event_interruptible(blkvsc_req->wevent, blkvsc_req->cond);
+ wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
@@ -562,7 +554,7 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
return -ENOMEM;
}
- init_waitqueue_head(&blkvsc_req->wevent);
+ init_completion(&blkvsc_req->request.wait_event);
blkvsc_req->dev = blkdev;
blkvsc_req->req = NULL;
blkvsc_req->write = 0;
@@ -578,18 +570,12 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
blkvsc_req->cmnd[4] = 64;
blkvsc_req->cmd_len = 6;
- /*
- * Set this here since the completion routine may be invoked and
- * completed before we return
- */
- blkvsc_req->cond = 0;
-
blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
- DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete - cond %d\n",
- blkvsc_req, blkvsc_req->cond);
+ DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
+ blkvsc_req);
- wait_event_interruptible(blkvsc_req->wevent, blkvsc_req->cond);
+ wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
buf = kmap(page_buf);
@@ -652,7 +638,7 @@ static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
}
vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
- init_waitqueue_head(&blkvsc_req->wevent);
+ init_completion(&blkvsc_req->request.wait_event);
blkvsc_req->dev = blkdev;
blkvsc_req->req = NULL;
blkvsc_req->write = 0;
@@ -665,18 +651,12 @@ static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
blkvsc_req->cmnd[0] = READ_CAPACITY;
blkvsc_req->cmd_len = 16;
- /*
- * Set this here since the completion routine may be invoked
- * and completed before we return
- */
- blkvsc_req->cond = 0;
-
blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
- DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete - cond %d\n",
- blkvsc_req, blkvsc_req->cond);
+ DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
+ blkvsc_req);
- wait_event_interruptible(blkvsc_req->wevent, blkvsc_req->cond);
+ wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
/* check error */
if (vm_srb->scsi_status) {
@@ -732,7 +712,7 @@ static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
return -ENOMEM;
}
- init_waitqueue_head(&blkvsc_req->wevent);
+ init_completion(&blkvsc_req->request.wait_event);
blkvsc_req->dev = blkdev;
blkvsc_req->req = NULL;
blkvsc_req->write = 0;
@@ -749,14 +729,13 @@ static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
* Set this here since the completion routine may be invoked
* and completed before we return
*/
- blkvsc_req->cond = 0;
blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
- DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete - cond %d\n",
- blkvsc_req, blkvsc_req->cond);
+ DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
+ blkvsc_req);
- wait_event_interruptible(blkvsc_req->wevent, blkvsc_req->cond);
+ wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
/* check error */
if (vm_srb->scsi_status) {
@@ -1161,8 +1140,7 @@ static void blkvsc_cmd_completion(struct hv_storvsc_request *request)
SCSI_SENSE_BUFFERSIZE, &sense_hdr))
scsi_print_sense_hdr("blkvsc", &sense_hdr);
- blkvsc_req->cond = 1;
- wake_up_interruptible(&blkvsc_req->wevent);
+ complete(&blkvsc_req->request.wait_event);
}
static void blkvsc_request_completion(struct hv_storvsc_request *request)
--
1.7.4.1
--
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