sg: remove SG_ALLOW_DIO_CODE define
sg had lots of the own functions for the direct IO but now sg uses the
block layer functions for it. There are only five lines for the direct
IO. SG_ALLOW_DIO_CODE define was used to compile out the direct IO
code but we don't need the define. If someone wants to remove the
direct IO code, he can do easily without the define.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index d18f90d..2c30331 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -68,7 +68,6 @@
#endif
#define SG_ALLOW_DIO_DEF 0
-#define SG_ALLOW_DIO_CODE /* compile out by commenting this define */
#define SG_MAX_DEVS 32768
@@ -1674,13 +1673,12 @@
if ((dxfer_len <= 0) || (dxfer_dir == SG_DXFER_NONE))
return 0;
-#ifdef SG_ALLOW_DIO_CODE
if (sg_allow_dio && (hp->flags & SG_FLAG_DIRECT_IO) &&
(dxfer_dir != SG_DXFER_UNKNOWN) && (0 == hp->iovec_count) &&
(!sfp->parentdp->device->host->unchecked_isa_dma) &&
blk_rq_aligned(q, hp->dxferp, dxfer_len))
return sg_build_direct(srp, sfp, dxfer_len);
-#endif
+
if ((!sg_res_in_use(sfp)) && (dxfer_len <= rsv_schp->bufflen))
sg_link_reserve(sfp, srp, dxfer_len);
else