[Qemu-devel] [PATCH 05/12] block: add logical block provisioning information to BlockDriverInfo

[Peter Lieven <pl@kamp.de>]

Signed-off-by: Peter Lieven <pl@kamp.de>
---
 include/block/block.h |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/block/block.h b/include/block/block.h
index 599de7d..ee17048 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -18,6 +18,15 @@ typedef struct BlockDriverInfo {
     /* offset at which the VM state can be saved (0 if not possible) */
     int64_t vm_state_offset;
     bool is_dirty;
+    /* do discarded blocks read back as zeroes? */
+    bool discard_zeroes;
+    /* is write zeroes optimized by a discard/unmap operation?
+     * this requires support for the BDRV_REQ_MAY_UNMAP flag. */
+    bool discard_write_zeroes;
+    /* maximum number of sectors that can be discarded at once */
+    int max_discard;
+    /* maximum number of sectors that can zeroized at once */
+    int max_write_zeroes;
 } BlockDriverInfo;
 
 typedef struct BlockFragInfo {
-- 
1.7.9.5