[PATCH 06/22] Staging: hv: Allocate request structures zeroed out.
From: K. Y. Srinivasan
Date: Tue Apr 05 2011 - 09:57:52 EST
In preparation for moving state out of struct hv_storvsc_request, allocate
request structures so that they zeroed out to begin with.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Signed-off-by: Abhishek Kane <v-abkane@xxxxxxxxxxxxx>
Signed-off-by: Hank Janssen <hjanssen@xxxxxxxxxxxxx>
---
drivers/staging/hv/blkvsc_drv.c | 14 ++++++++------
drivers/staging/hv/storvsc.c | 1 -
drivers/staging/hv/storvsc_drv.c | 2 +-
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 1e5320e..2661356 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -510,7 +510,7 @@ static int blkvsc_do_flush(struct block_device_context *blkdev)
if (blkdev->device_type != HARDDISK_TYPE)
return 0;
- blkvsc_req = kmem_cache_alloc(blkdev->request_pool, GFP_KERNEL);
+ blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
if (!blkvsc_req)
return -ENOMEM;
@@ -551,7 +551,7 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_inquiry()\n");
- blkvsc_req = kmem_cache_alloc(blkdev->request_pool, GFP_KERNEL);
+ blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
if (!blkvsc_req)
return -ENOMEM;
@@ -638,7 +638,7 @@ static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
blkdev->capacity = 0;
blkdev->media_not_present = 0; /* assume a disk is present */
- blkvsc_req = kmem_cache_alloc(blkdev->request_pool, GFP_KERNEL);
+ blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
if (!blkvsc_req)
return -ENOMEM;
@@ -715,7 +715,7 @@ static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
blkdev->capacity = 0;
blkdev->media_not_present = 0; /* assume a disk is present */
- blkvsc_req = kmem_cache_alloc(blkdev->request_pool, GFP_KERNEL);
+ blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
if (!blkvsc_req)
return -ENOMEM;
@@ -983,7 +983,7 @@ static int blkvsc_do_request(struct block_device_context *blkdev,
(unsigned long)blk_rq_pos(req));
/* Create a group to tie req to list of blkvsc_reqs */
- group = kmem_cache_alloc(blkdev->request_pool, GFP_ATOMIC);
+ group = kmem_cache_zalloc(blkdev->request_pool, GFP_ATOMIC);
if (!group)
return -ENOMEM;
@@ -1026,7 +1026,9 @@ static int blkvsc_do_request(struct block_device_context *blkdev,
* Create new blkvsc_req to represent
* the current bvec
*/
- blkvsc_req = kmem_cache_alloc(blkdev->request_pool, GFP_ATOMIC);
+ blkvsc_req =
+ kmem_cache_zalloc(
+ blkdev->request_pool, GFP_ATOMIC);
if (!blkvsc_req) {
/* free up everything */
list_for_each_entry_safe(
diff --git a/drivers/staging/hv/storvsc.c b/drivers/staging/hv/storvsc.c
index 8dc17b9..e02622d 100644
--- a/drivers/staging/hv/storvsc.c
+++ b/drivers/staging/hv/storvsc.c
@@ -545,7 +545,6 @@ int stor_vsc_on_io_request(struct hv_device *device,
request_extension->request = request;
request_extension->device = device;
- memset(vstor_packet, 0 , sizeof(struct vstor_packet));
vstor_packet->flags |= REQUEST_COMPLETION_FLAG;
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index c2a3a5b..fd1416d 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -735,7 +735,7 @@ static int storvsc_queuecommand_lck(struct scsi_cmnd *scmnd,
request_size = sizeof(struct storvsc_cmd_request);
- cmd_request = kmem_cache_alloc(host_device_ctx->request_pool,
+ cmd_request = kmem_cache_zalloc(host_device_ctx->request_pool,
GFP_ATOMIC);
if (!cmd_request) {
DPRINT_ERR(STORVSC_DRV, "scmnd (%p) - unable to allocate "
--
1.7.4.1
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