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[Qemu-devel] [RFC V2 3/7] block: Add bdrv_has_dedup.
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC V2 3/7] block: Add bdrv_has_dedup. |
Date: |
Wed, 6 Feb 2013 13:32:22 +0100 |
---
block.c | 15 +++++++++++++++
include/block/block.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/block.c b/block.c
index fec29f4..e9d7764 100644
--- a/block.c
+++ b/block.c
@@ -4291,6 +4291,21 @@ void bdrv_lock_medium(BlockDriverState *bs, bool locked)
}
}
+/* Return true if the device has deduplication */
+bool bdrv_has_dedup(BlockDriverState *bs)
+{
+ BlockDriverInfo bdi;
+ int ret = 0;
+
+ ret = bdrv_get_info((BlockDriverState *) bs, &bdi);
+
+ if (ret < 0) {
+ return false;
+ }
+
+ return bdi.has_dedup;
+}
+
/* needed for generic scsi interface */
int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
diff --git a/include/block/block.h b/include/block/block.h
index 4d61ff4..55549ae 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -306,6 +306,7 @@ void bdrv_set_enable_write_cache(BlockDriverState *bs, bool
wce);
int bdrv_is_inserted(BlockDriverState *bs);
int bdrv_media_changed(BlockDriverState *bs);
void bdrv_lock_medium(BlockDriverState *bs, bool locked);
+bool bdrv_has_dedup(BlockDriverState *bs);
void bdrv_eject(BlockDriverState *bs, bool eject_flag);
const char *bdrv_get_format_name(BlockDriverState *bs);
BlockDriverState *bdrv_find(const char *name);
--
1.7.10.4
- [Qemu-devel] [RFC V2 0/7] QCOW2 asynchronous deduplication, Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 2/7] qcow2: Add code to deduplicate cluster flagged with QCOW_OFLAG_TO_DEDUP., Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 6/7] qcow2: Make dedup status persists., Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 5/7] qcow2: Add qcow2_dedup_control., Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 7/7] qmp: Add block-dedup-control., Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 4/7] block: Add bdrv_dedup_control to start and stop deduplication., Benoît Canet, 2013/02/06
- [Qemu-devel] [RFC V2 3/7] block: Add bdrv_has_dedup.,
Benoît Canet <=
- [Qemu-devel] [RFC V2 1/7] block: Add BlockDriver function prototype to pause and resume deduplication., Benoît Canet, 2013/02/06