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[Qemu-devel] [PATCH v4 15/15] block: More operations for meta dirty bitm
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v4 15/15] block: More operations for meta dirty bitmap |
Date: |
Tue, 8 Mar 2016 12:45:06 +0800 |
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>
---
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 3aef91a..3992eb5 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 40a09c0..3cbed02 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,
--
2.4.3
- [Qemu-devel] [PATCH v4 09/15] block: Support meta dirty bitmap, (continued)
- [Qemu-devel] [PATCH v4 09/15] block: Support meta dirty bitmap, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 10/15] block: Add two dirty bitmap getters, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 11/15] block: Assert that bdrv_release_dirty_bitmap succeeded, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 12/15] hbitmap: serialization, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 13/15] block: BdrvDirtyBitmap serialization interface, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 14/15] tests: Add test code for hbitmap serialization, Fam Zheng, 2016/03/07
- [Qemu-devel] [PATCH v4 15/15] block: More operations for meta dirty bitmap,
Fam Zheng <=
- Re: [Qemu-devel] [PATCH v4 00/15] Dirty bitmap changes for migration/persistence work, Max Reitz, 2016/03/11