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[Qemu-devel] [PATCHv3 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv3 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes |
Date: |
Tue, 24 Sep 2013 15:35:05 +0200 |
Signed-off-by: Peter Lieven <address@hidden>
---
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
- [Qemu-devel] [PATCHv3 00/20] block: logical block provisioning enhancements, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 04/20] block: introduce bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 01/20] block: make BdrvRequestFlags public, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 02/20] block: add flags to bdrv_*_write_zeroes, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 03/20] block: introduce BDRV_REQ_MAY_UNMAP request flag, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 05/20] block/raw: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 06/20] block: add BlockLimits structure to BlockDriverState, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 07/20] block: honour BlockLimits in bdrv_co_do_write_zeroes, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 08/20] block: honour BlockLimits in bdrv_co_discard, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 11/20] iscsi: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes,
Peter Lieven <=
- [Qemu-devel] [PATCHv3 13/20] block: introduce bdrv_zeroize, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 12/20] iscsi: add bdrv_co_write_zeroes, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 10/20] iscsi: set limits in BlockDriverState, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 14/20] block/get_block_status: set *pnum = 0 on error, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 09/20] iscsi: simplify iscsi_co_discard, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 16/20] block/get_block_status: avoid redundant callouts on raw devices, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 18/20] qemu-img: add support for fully allocated images, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 20/20] block/raw: copy BlockLimits on raw_open, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 15/20] block/get_block_status: avoid segfault if there is no backing_hd, Peter Lieven, 2013/09/24
- [Qemu-devel] [PATCHv3 17/20] block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks, Peter Lieven, 2013/09/24