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yaml
---
r: 248950
b: refs/heads/master
c: f336545
h: refs/heads/master
v: v3
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K. Y. Srinivasan authored and Greg Kroah-Hartman committed Apr 5, 2011
1 parent 846076f commit 9ef3ff9
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Showing 2 changed files with 16 additions and 38 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: d7a1bdb990b9dfe93d080dc242860e33d08ec5a6
refs/heads/master: f3365453a3c4a1e8ca28c0dedabf371385456d1f
52 changes: 15 additions & 37 deletions trunk/drivers/staging/hv/blkvsc_drv.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -517,7 +514,7 @@ 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;
Expand All @@ -529,14 +526,9 @@ 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);

Expand Down Expand Up @@ -564,7 +556,7 @@ 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;
Expand All @@ -580,18 +572,12 @@ 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);

Expand Down Expand Up @@ -654,7 +640,7 @@ 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;
Expand All @@ -667,18 +653,12 @@ 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) {
Expand Down Expand Up @@ -734,7 +714,7 @@ 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;
Expand All @@ -751,14 +731,13 @@ 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) {
Expand Down Expand Up @@ -1163,8 +1142,7 @@ 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)
Expand Down

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