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[Qemu-devel] [PATCH 09/17] qcow2-dirty-bitmap: add qcow2_dirty_bitmap_lo
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH 09/17] qcow2-dirty-bitmap: add qcow2_dirty_bitmap_load_check() |
Date: |
Sat, 5 Sep 2015 19:43:51 +0300 |
The function checks existing of the bitmap without loading it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
block.c | 15 +++++++++++++++
block/qcow2-dirty-bitmap.c | 5 +++++
block/qcow2.c | 1 +
block/qcow2.h | 1 +
include/block/block.h | 2 ++
include/block/block_int.h | 2 ++
6 files changed, 26 insertions(+)
diff --git a/block.c b/block.c
index 8c39d0a..69d7c30 100644
--- a/block.c
+++ b/block.c
@@ -3347,6 +3347,21 @@ void bdrv_release_meta_bitmap(BdrvDirtyBitmap *bitmap)
}
}
+bool bdrv_load_check_dirty_bitmap(BlockDriverState *file, const char *name)
+{
+ BlockDriver *drv = file->drv;
+ if (!drv) {
+ return false;
+ }
+ if (drv->bdrv_dirty_bitmap_load_check) {
+ return drv->bdrv_dirty_bitmap_load_check(file, name);
+ }
+ if (file->file) {
+ return bdrv_load_check_dirty_bitmap(file->file, name);
+ }
+ return false;
+}
+
BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
uint32_t granularity,
const char *name,
diff --git a/block/qcow2-dirty-bitmap.c b/block/qcow2-dirty-bitmap.c
index 39f54e4..2687edc 100644
--- a/block/qcow2-dirty-bitmap.c
+++ b/block/qcow2-dirty-bitmap.c
@@ -303,6 +303,11 @@ finish:
return ret;
}
+bool qcow2_dirty_bitmap_load_check(BlockDriverState *file, const char *name)
+{
+ return find_dirty_bitmap_by_name(file, name) != NULL;
+}
+
BdrvDirtyBitmap * qcow2_dirty_bitmap_load(BlockDriverState *bs_for,
BlockDriverState *bs_file,
const char *name,
diff --git a/block/qcow2.c b/block/qcow2.c
index de638e7..36f404c 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3045,6 +3045,7 @@ BlockDriver bdrv_qcow2 = {
.bdrv_get_specific_info = qcow2_get_specific_info,
.bdrv_dirty_bitmap_load = qcow2_dirty_bitmap_load,
+ .bdrv_dirty_bitmap_load_check = qcow2_dirty_bitmap_load_check,
.bdrv_dirty_bitmap_store = qcow2_dirty_bitmap_store,
.bdrv_save_vmstate = qcow2_save_vmstate,
diff --git a/block/qcow2.h b/block/qcow2.h
index ec42cec..05f59e0 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -608,6 +608,7 @@ int qcow2_read_snapshots(BlockDriverState *bs);
void qcow2_free_dirty_bitmaps(BlockDriverState *bs);
int qcow2_read_dirty_bitmaps(BlockDriverState *bs);
+bool qcow2_dirty_bitmap_load_check(BlockDriverState *file, const char *name);
BdrvDirtyBitmap *qcow2_dirty_bitmap_load(BlockDriverState *bs_for,
BlockDriverState *bs_file,
const char *name,
diff --git a/include/block/block.h b/include/block/block.h
index 8166640..5e95e51 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -531,6 +531,8 @@ HBitmap *bdrv_create_meta_bitmap(BdrvDirtyBitmap *bitmap,
uint64_t granularity);
void bdrv_release_meta_bitmap(BdrvDirtyBitmap *bitmap);
+bool bdrv_load_check_dirty_bitmap(BlockDriverState *file, const char *name);
+
void bdrv_enable_copy_on_read(BlockDriverState *bs);
void bdrv_disable_copy_on_read(BlockDriverState *bs);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index c66621e..2c35a73 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -204,6 +204,8 @@ struct BlockDriver {
int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi);
ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs);
+ bool (*bdrv_dirty_bitmap_load_check)(BlockDriverState *file,
+ const char *name);
BdrvDirtyBitmap *(*bdrv_dirty_bitmap_load)(BlockDriverState *bs_for,
BlockDriverState *bs_file,
const char *name,
--
2.1.4
- [Qemu-devel] [PATCH v3 RFC 0/17] block: persistent dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 02/17] block: add bdrv_dirty_bitmap_size(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 01/17] block: fix bdrv_dirty_bitmap_granularity(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 05/17] qcow2-dirty-bitmap: read dirty bitmap directory, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 04/17] qcow2: Dirty Bitmaps Ext: structs and consts, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 03/17] spec: add qcow2-dirty-bitmaps specification, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 06/17] qcow2-dirty-bitmap: add qcow2_dirty_bitmap_load(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 07/17] qcow2-dirty-bitmap: add qcow2_dirty_bitmap_store(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 08/17] qcow2: add dirty bitmaps extension, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 09/17] qcow2-dirty-bitmap: add qcow2_dirty_bitmap_load_check(),
Vladimir Sementsov-Ogievskiy <=
- [Qemu-devel] [PATCH 10/17] block: store persistent dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 12/17] qcow2-dirty-bitmap: add autoclear bit, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 11/17] block: add bdrv_load_dirty_bitmap(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 14/17] qcow2-dirty-bitmap: add IN_USE flag, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 13/17] qemu: command line option for dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 16/17] iotests: add VM.test_launcn(), Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 15/17] qcow2-dirty-bitmaps: handle store reqursion, Vladimir Sementsov-Ogievskiy, 2015/09/05
- [Qemu-devel] [PATCH 17/17] iotests: test internal persistent dirty bitmap, Vladimir Sementsov-Ogievskiy, 2015/09/05
- Re: [Qemu-devel] [PATCH v3 RFC 0/17] block: persistent dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2015/09/05
- Re: [Qemu-devel] [PATCH v3 RFC 0/17] block: persistent dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2015/09/05