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[Qemu-devel] [PATCHv2 06/20] block: add discard and write_zeroes limits
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv2 06/20] block: add discard and write_zeroes limits and alignment to BlockDriverState |
Date: |
Tue, 17 Sep 2013 15:48:42 +0200 |
Signed-off-by: Peter Lieven <address@hidden>
---
include/block/block_int.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 85c3474..692b9ed 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -280,6 +280,18 @@ struct BlockDriverState {
/* the memory alignment required for the buffers handled by this driver */
int buffer_alignment;
+ /* maximum number of sectors that can be discarded at once */
+ int max_discard;
+
+ /* optimal alignment for discard requests in sectors */
+ int64_t discard_alignment;
+
+ /* maximum number of sectors that can zeroized at once */
+ int max_write_zeroes;
+
+ /* optimal alignment for write zeroes requests in sectors */
+ int64_t write_zeroes_alignment;
+
/* do we need to tell the quest if we have a volatile write cache? */
int enable_write_cache;
--
1.7.9.5
- [Qemu-devel] [PATCHv2 00/20] block: logical block provisioning enhancements, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 01/20] block: make BdrvRequestFlags public, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 02/20] block: add flags to bdrv_*_write_zeroes, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 03/20] block: introduce BDRV_REQ_MAY_UNMAP request flag, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 04/20] block: introduce bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 06/20] block: add discard and write_zeroes limits and alignment to BlockDriverState,
Peter Lieven <=
- [Qemu-devel] [PATCHv2 08/20] block: honour alignment and limit in bdrv_co_discard, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 10/20] iscsi: set limits in BlockDriverState, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 09/20] iscsi: simplify iscsi_co_discard, Peter Lieven, 2013/09/17
- [Qemu-devel] [PATCHv2 05/20] block/raw: add bdrv_has_discard_zeroes and bdrv_has_discard_write_zeroes, Peter Lieven, 2013/09/17