From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VOSnx-0004OG-2W for qemu-devel@nongnu.org; Tue, 24 Sep 2013 09:37:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VOSnq-0004y7-6K for qemu-devel@nongnu.org; Tue, 24 Sep 2013 09:37:28 -0400 Received: from mx.ipv6.kamp.de ([2a02:248:0:51::16]:55236 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VOSnp-0004xt-Ic for qemu-devel@nongnu.org; Tue, 24 Sep 2013 09:37:22 -0400 From: Peter Lieven Date: Tue, 24 Sep 2013 15:35:05 +0200 Message-Id: <1380029714-5239-12-git-send-email-pl@kamp.de> In-Reply-To: <1380029714-5239-1-git-send-email-pl@kamp.de> References: <1380029714-5239-1-git-send-email-pl@kamp.de> Subject: [Qemu-devel] [PATCHv3 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, ronniesahlberg@gmail.com, Peter Lieven , stefanha@redhat.com, anthony@codemonkey.ws, pbonzini@redhat.com Signed-off-by: Peter Lieven --- block/iscsi.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/block/iscsi.c b/block/iscsi.c index 90dc7c2..f6cd322 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) { @@ -1534,7 +1546,9 @@ 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