From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55862) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLvgq-0007K1-Ky for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VLvgk-0001wy-19 for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:40 -0400 Received: from mx.ipv6.kamp.de ([2a02:248:0:51::16]:36764 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLvgj-0001wi-M5 for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:33 -0400 From: Peter Lieven Date: Tue, 17 Sep 2013 15:48:47 +0200 Message-Id: <1379425736-11326-12-git-send-email-pl@kamp.de> In-Reply-To: <1379425736-11326-1-git-send-email-pl@kamp.de> References: <1379425736-11326-1-git-send-email-pl@kamp.de> Subject: [Qemu-devel] [PATCHv2 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 21b1ecf..46c7c8d 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1440,6 +1440,18 @@ static int iscsi_has_zero_init(BlockDriverState *bs) return 0; } +static int iscsi_has_discard_zeroes(BlockDriverState *bs) +{ + IscsiLun *iscsilun = bs->opaque; + return iscsilun->lbprz; +} + +static int 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) { int ret = 0; @@ -1522,7 +1534,9 @@ 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