block/iscsi: reenable iscsi_co_get_block_status

Commit f35c934a accidently disabled iscsi_co_get_block_status for all
libiscsi versions. Its not possible to check for enumeration constants
in the C preprocessor. This patch changes the check to the preprocessor
constant LIBISCSI_FEATURE_IOVECTOR which was introduced shortly after
get_lba_status support was added to libiscsi.

Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/block/iscsi.c b/block/iscsi.c
index 6152ef1..a2a961e 100644 (file)
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -811,7 +811,7 @@ iscsi_getlength(BlockDriverState *bs)
     return len;
 }
 
-#if defined(SCSI_PROVISIONING_TYPE_DEALLOCATED)
+#if defined(LIBISCSI_FEATURE_IOVECTOR)
 
 static int64_t coroutine_fn iscsi_co_get_block_status(BlockDriverState *bs,
                                                   int64_t sector_num,
@@ -903,7 +903,7 @@ out:
     return ret;
 }
 
-#endif /* SCSI_PROVISIONING_TYPE_DEALLOCATED */
+#endif /* LIBISCSI_FEATURE_IOVECTOR */
 
 static int
 coroutine_fn iscsi_co_discard(BlockDriverState *bs, int64_t sector_num,
@@ -1529,7 +1529,7 @@ static BlockDriver bdrv_iscsi = {
     .bdrv_getlength  = iscsi_getlength,
     .bdrv_truncate   = iscsi_truncate,
 
-#if defined(SCSI_PROVISIONING_TYPE_DEALLOCATED)
+#if defined(LIBISCSI_FEATURE_IOVECTOR)
     .bdrv_co_get_block_status = iscsi_co_get_block_status,
 #endif
     .bdrv_co_discard      = iscsi_co_discard,