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scsi-disk: make discard asynchronous 

By making discard asynchronous, we can reuse all the error handling
code that is used for other commands.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-02-08 10:37:48 +01:00
parent 353815aa6d
commit c1b3524788
1 changed files with 10 additions and 12 deletions
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22
hw/scsi-disk.c
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@ -169,7 +169,7 @@ static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
}
static void scsi_flush_complete(void * opaque, int ret)
static void scsi_aio_complete(void *opaque, int ret)
{
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
@ -222,7 +222,7 @@ static void scsi_write_do_fua(SCSIDiskReq *r)
if (scsi_is_cmd_fua(&r->req.cmd)) {
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r);
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
return;
}
@ -1543,7 +1543,7 @@ static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
/* The request is used as the AIO opaque value, so add a ref. */
scsi_req_ref(&r->req);
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r);
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
return 0;
case READ_6:
case READ_10:
@ -1620,15 +1620,13 @@ static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
goto fail;
}
rc = bdrv_discard(s->qdev.conf.bs,
r->req.cmd.lba * (s->qdev.blocksize / 512),
len * (s->qdev.blocksize / 512));
if (rc < 0) {
/* XXX: better error code ?*/
goto fail;
}
break;
/* The request is used as the AIO opaque value, so add a ref. */
scsi_req_ref(&r->req);
r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs,
r->req.cmd.lba * (s->qdev.blocksize / 512),
len * (s->qdev.blocksize / 512),
scsi_aio_complete, r);
return 0;
default:
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));