[PATCH 40/40] Staging: hv: storvsc: No need to copy from bounce buffer in case of failure

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



In case we are not able to submit an I/O, there is no need to copy
from the bounce buffers; get of the code to copy.

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/storvsc_drv.c |   10 +---------
 1 files changed, 1 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index cc4b128..e2cdd7b 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -1421,17 +1421,9 @@ retry_request:
 	if (ret == -EAGAIN) {
 		/* no more space */
 
-		if (cmd_request->bounce_sgl_count) {
-			/*
-			 * FIXME: We can optimize on writes by just skipping
-			 * this
-			 */
-			copy_from_bounce_buffer(scsi_sglist(scmnd),
-						cmd_request->bounce_sgl,
-						scsi_sg_count(scmnd));
+		if (cmd_request->bounce_sgl_count)
 			destroy_bounce_buffer(cmd_request->bounce_sgl,
 					      cmd_request->bounce_sgl_count);
-		}
 
 		kmem_cache_free(host_dev->request_pool, cmd_request);
 
-- 
1.7.4.1

_______________________________________________
Virtualization mailing list
Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/virtualization


[Index of Archives]     [KVM Development]     [Libvirt Development]     [Libvirt Users]     [CentOS Virtualization]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux