Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
block-migration.c | 6 ++++--
block.c | 14 +++++++-------
block.h | 5 +----
block/mirror.c | 14 ++++----------
4 files changed, 16 insertions(+), 23 deletions(-)
diff --git a/block-migration.c b/block-migration.c
index 6fdce1a..3b05c77 100644
--- a/block-migration.c
+++ b/block-migration.c
@@ -23,7 +23,8 @@
#include "blockdev.h"
#include <assert.h>
-#define BLOCK_SIZE (BDRV_SECTORS_PER_DIRTY_CHUNK << BDRV_SECTOR_BITS)
+#define BLOCK_SIZE (1 << 20)
+#define BDRV_SECTORS_PER_DIRTY_CHUNK (BLOCK_SIZE >> BDRV_SECTOR_BITS)
#define BLK_MIG_FLAG_DEVICE_BLOCK 0x01
#define BLK_MIG_FLAG_EOS 0x02
@@ -264,7 +265,8 @@ static void set_dirty_tracking(int enable)
BlkMigDevState *bmds;
QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
- bdrv_set_dirty_tracking(bmds->bs, enable);
+ bdrv_set_dirty_tracking(bmds->bs,
+ enable ? BDRV_SECTORS_PER_DIRTY_CHUNK : 0);
}
}
diff --git a/block.c b/block.c
index b1d653f..e25b18a 100644
--- a/block.c
+++ b/block.c
@@ -4028,16 +4028,16 @@ void *qemu_blockalign(BlockDriverState *bs, size_t size)
return qemu_memalign((bs && bs->buffer_alignment) ? bs->buffer_alignment :
512, size);
}
-void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable)
+void bdrv_set_dirty_tracking(BlockDriverState *bs, int granularity)
{
int64_t bitmap_size;
- if (enable) {
- if (!bs->dirty_bitmap) {
- bitmap_size = (bdrv_getlength(bs) >> BDRV_SECTOR_BITS);
- bs->dirty_bitmap = hbitmap_alloc(bitmap_size,
- BDRV_LOG_SECTORS_PER_DIRTY_CHUNK);
- }
+ assert((granularity & (granularity - 1)) == 0);
+
+ if (granularity) {
+ assert(!bs->dirty_bitmap);
+ bitmap_size = (bdrv_getlength(bs) >> BDRV_SECTOR_BITS);
+ bs->dirty_bitmap = hbitmap_alloc(bitmap_size, ffs(granularity) - 1);
} else {
if (bs->dirty_bitmap) {
hbitmap_free(bs->dirty_bitmap);
diff --git a/block.h b/block.h
index a79f26b..546fc02 100644
--- a/block.h
+++ b/block.h
@@ -357,11 +357,8 @@ int bdrv_img_create(const char *filename, const char *fmt,
void bdrv_set_buffer_alignment(BlockDriverState *bs, int align);
void *qemu_blockalign(BlockDriverState *bs, size_t size);
-#define BDRV_SECTORS_PER_DIRTY_CHUNK (1 <<
BDRV_LOG_SECTORS_PER_DIRTY_CHUNK)
-#define BDRV_LOG_SECTORS_PER_DIRTY_CHUNK 11
-
struct HBitmapIter;
-void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable);
+void bdrv_set_dirty_tracking(BlockDriverState *bs, int granularity);
int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors);
void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int
nr_sectors);
diff --git a/block/mirror.c b/block/mirror.c
index cc9f1fb..e09beaf 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -17,14 +17,8 @@
#include "qemu/ratelimit.h"
#include "bitmap.h"
-enum {
- /*
- * Size of data buffer for populating the image file. This should be large
- * enough to process multiple clusters in a single call, so that populating
- * contiguous regions of the image is efficient.
- */
- BLOCK_SIZE = 512 * BDRV_SECTORS_PER_DIRTY_CHUNK, /* in bytes */
-};
+#define BLOCK_SIZE (1 << 20)
+#define BDRV_SECTORS_PER_DIRTY_CHUNK (BLOCK_SIZE >> BDRV_SECTOR_BITS)
#define SLICE_TIME 100000000ULL /* ns */
@@ -233,7 +227,7 @@ static void coroutine_fn mirror_run(void *opaque)
immediate_exit:
g_free(s->buf);
g_free(s->cow_bitmap);
- bdrv_set_dirty_tracking(bs, false);
+ bdrv_set_dirty_tracking(bs, 0);
bdrv_iostatus_disable(s->target);
if (s->synced && ret == 0) {
ret = bdrv_flush(s->target);
@@ -344,7 +338,7 @@ void mirror_start(BlockDriverState *bs, BlockDriverState
*target,
}
}
- bdrv_set_dirty_tracking(bs, true);
+ bdrv_set_dirty_tracking(bs, BDRV_SECTORS_PER_DIRTY_CHUNK);
bdrv_set_on_error(s->target, on_target_error, on_target_error);
bdrv_iostatus_enable(s->target);
s->common.co = qemu_coroutine_create(mirror_run);
--
1.7.10.2
