Reviewed-by: Eric Blake <[email protected]>
Signed-off-by: Peter Lieven <[email protected]>
---
block/iscsi.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index 8ed2274..f0ac620 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1449,6 +1449,18 @@ static int iscsi_has_zero_init(BlockDriverState *bs)
return 0;
}
+static bool iscsi_has_discard_zeroes(BlockDriverState *bs)
+{
+ IscsiLun *iscsilun = bs->opaque;
+ return !!iscsilun->lbprz;
+}
+
+static bool iscsi_has_discard_write_zeroes(BlockDriverState *bs)
+{
+ IscsiLun *iscsilun = bs->opaque;
+ return iscsilun->lbprz && iscsilun->lbp.lbpws;
+}
+
static int iscsi_create(const char *filename, QEMUOptionParameter *options,
Error **errp)
{
@@ -1535,7 +1547,9 @@ static BlockDriver bdrv_iscsi = {
.bdrv_aio_writev = iscsi_aio_writev,
.bdrv_aio_flush = iscsi_aio_flush,
- .bdrv_has_zero_init = iscsi_has_zero_init,
+ .bdrv_has_zero_init = iscsi_has_zero_init,
+ .bdrv_has_discard_zeroes = iscsi_has_discard_zeroes,
+ .bdrv_has_discard_write_zeroes = iscsi_has_discard_write_zeroes,
#ifdef __linux__
.bdrv_ioctl = iscsi_ioctl,
--
1.7.9.5
