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block/iscsi: drop unused IscsiAIOCB->buf field

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The IscsiAIOCB->buf field has not been used since commit
e49ab19fca ("block/iscsi: bump libiscsi
requirement to 1.9.0").  It used to be a linear buffer for old libiscsi
versions that didn't support scatter-gather.  The minimum libiscsi
version supports scatter-gather so we don't linearize buffers anymore.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20180203061621.7033-2-stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2018-02-03 07:16:19 +01:00 committed by Paolo Bonzini
parent b65cc8dec0
commit f92fa85f98
1 changed files with 0 additions and 8 deletions
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8
block/iscsi.c
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@ -117,7 +117,6 @@ typedef struct IscsiAIOCB {
QEMUBH *bh;
IscsiLun *iscsilun;
struct scsi_task *task;
uint8_t *buf;
int status;
int64_t sector_num;
int nb_sectors;
@ -150,9 +149,6 @@ iscsi_bh_cb(void *p)
qemu_bh_delete(acb->bh);
g_free(acb->buf);
acb->buf = NULL;
acb->common.cb(acb->common.opaque, acb->status);
if (acb->task != NULL) {
@ -933,9 +929,6 @@ iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status,
{
IscsiAIOCB *acb = opaque;
g_free(acb->buf);
acb->buf = NULL;
acb->status = 0;
if (status < 0) {
error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s",
@ -1010,7 +1003,6 @@ static BlockAIOCB *iscsi_aio_ioctl(BlockDriverState *bs,
acb->iscsilun = iscsilun;
acb->bh = NULL;
acb->status = -EINPROGRESS;
acb->buf = NULL;
acb->ioh = buf;
if (req != SG_IO) {