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[Qemu-block] [PULL 10/18] block: More operations for meta dirty bitmap
From: |
Max Reitz |
Subject: |
[Qemu-block] [PULL 10/18] block: More operations for meta dirty bitmap |
Date: |
Wed, 14 Sep 2016 18:40:54 +0200 |
From: Fam Zheng <address@hidden>
Callers can create an iterator of meta bitmap with
bdrv_dirty_meta_iter_new(), then use the bdrv_dirty_iter_* operations on
it. Meta iterators are also counted by bitmap->active_iterators.
Also add a couple of functions to retrieve granularity and count.
Signed-off-by: Fam Zheng <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Signed-off-by: John Snow <address@hidden>
Message-id: address@hidden
Signed-off-by: Max Reitz <address@hidden>
---
block/dirty-bitmap.c | 19 +++++++++++++++++++
include/block/dirty-bitmap.h | 3 +++
2 files changed, 22 insertions(+)
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 384146b..519737c 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -393,6 +393,11 @@ uint32_t bdrv_dirty_bitmap_granularity(BdrvDirtyBitmap
*bitmap)
return BDRV_SECTOR_SIZE << hbitmap_granularity(bitmap->bitmap);
}
+uint32_t bdrv_dirty_bitmap_meta_granularity(BdrvDirtyBitmap *bitmap)
+{
+ return BDRV_SECTOR_SIZE << hbitmap_granularity(bitmap->meta);
+}
+
BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap,
uint64_t first_sector)
{
@@ -403,6 +408,15 @@ BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap
*bitmap,
return iter;
}
+BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap)
+{
+ BdrvDirtyBitmapIter *iter = g_new(BdrvDirtyBitmapIter, 1);
+ hbitmap_iter_init(&iter->hbi, bitmap->meta, 0);
+ iter->bitmap = bitmap;
+ bitmap->active_iterators++;
+ return iter;
+}
+
void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter)
{
if (!iter) {
@@ -514,3 +528,8 @@ int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap)
{
return hbitmap_count(bitmap->bitmap);
}
+
+int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap)
+{
+ return hbitmap_count(bitmap->meta);
+}
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index efc2965..9dea14b 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -30,6 +30,7 @@ void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
uint32_t bdrv_dirty_bitmap_granularity(BdrvDirtyBitmap *bitmap);
+uint32_t bdrv_dirty_bitmap_meta_granularity(BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_frozen(BdrvDirtyBitmap *bitmap);
const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap);
@@ -47,12 +48,14 @@ int bdrv_dirty_bitmap_get_meta(BlockDriverState *bs,
void bdrv_dirty_bitmap_reset_meta(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap, int64_t sector,
int nb_sectors);
+BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap);
BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap,
uint64_t first_sector);
void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter);
int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t sector_num);
int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap);
+int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap);
void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap,
--
2.5.5
- [Qemu-block] [PULL 00/18] Block layer patches, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 01/18] block: Hide HBitmap in block dirty bitmap interface, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 02/18] HBitmap: Introduce "meta" bitmap to track bit changes, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 03/18] tests: Add test code for meta bitmap, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 04/18] block: Support meta dirty bitmap, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 05/18] block: Add two dirty bitmap getters, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 06/18] block: Assert that bdrv_release_dirty_bitmap succeeded, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 07/18] hbitmap: serialization, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 08/18] block: BdrvDirtyBitmap serialization interface, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 10/18] block: More operations for meta dirty bitmap,
Max Reitz <=
- [Qemu-block] [PULL 09/18] tests: Add test code for hbitmap serialization, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 11/18] qemu-img: add the 'dd' subcommand, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 12/18] qemu-img: add skip option to dd, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 13/18] blockdev: prepare iSCSI block driver for dynamic loading, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 14/18] blockdev: Add dynamic generation of module_block.h, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 15/18] blockdev: Add dynamic module loading for block drivers, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 16/18] blockdev: Modularize nfs block driver, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 17/18] commit: get the overlay node before manipulating the backing chain, Max Reitz, 2016/09/14
- [Qemu-block] [PULL 18/18] iotest 055: refactor and speed up, Max Reitz, 2016/09/14
- Re: [Qemu-block] [Qemu-devel] [PULL 00/18] Block layer patches, no-reply, 2016/09/14