Staging: hv: storvsc: Optimize bounce buffer handling for the "write" case
Optimize bounce buffer handling for the "write" case. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1 changed files with 6 additions and 6 deletions
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@ -425,17 +425,17 @@ static void storvsc_commmand_completion(struct hv_storvsc_request *request)
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struct scsi_sense_hdr sense_hdr;
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struct vmscsi_request *vm_srb;
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vm_srb = &request->vstor_packet.vm_srb;
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if (cmd_request->bounce_sgl_count) {
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/* FIXME: We can optimize on writes by just skipping this */
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copy_from_bounce_buffer(scsi_sglist(scmnd),
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if (vm_srb->data_in == READ_TYPE) {
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copy_from_bounce_buffer(scsi_sglist(scmnd),
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cmd_request->bounce_sgl,
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scsi_sg_count(scmnd));
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destroy_bounce_buffer(cmd_request->bounce_sgl,
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cmd_request->bounce_sgl_count);
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destroy_bounce_buffer(cmd_request->bounce_sgl,
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cmd_request->bounce_sgl_count);
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}
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}
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vm_srb = &request->vstor_packet.vm_srb;
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scmnd->result = vm_srb->scsi_status;
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if (scmnd->result) {
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