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[Qemu-devel] [PATCH 07/12] dirty-bitmap: Change bdrv_get_dirty_count() t
From: |
Eric Blake |
Subject: |
[Qemu-devel] [PATCH 07/12] dirty-bitmap: Change bdrv_get_dirty_count() to report bytes |
Date: |
Wed, 12 Apr 2017 12:49:15 -0500 |
Thanks to recent cleanups, all callers were scaling a return value
of sectors into bytes; do the scaling internally instead.
Signed-off-by: Eric Blake <address@hidden>
---
block/dirty-bitmap.c | 4 ++--
block/mirror.c | 13 +++++--------
migration/block.c | 2 +-
3 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 2f9f554..e3c2e34 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -319,7 +319,7 @@ BlockDirtyInfoList
*bdrv_query_dirty_bitmaps(BlockDriverState *bs)
QLIST_FOREACH(bm, &bs->dirty_bitmaps, list) {
BlockDirtyInfo *info = g_new0(BlockDirtyInfo, 1);
BlockDirtyInfoList *entry = g_new0(BlockDirtyInfoList, 1);
- info->count = bdrv_get_dirty_count(bm) << BDRV_SECTOR_BITS;
+ info->count = bdrv_get_dirty_count(bm);
info->granularity = bdrv_dirty_bitmap_granularity(bm);
info->has_name = !!bm->name;
info->name = g_strdup(bm->name);
@@ -494,7 +494,7 @@ void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *iter, int64_t
offset)
int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap)
{
- return hbitmap_count(bitmap->bitmap);
+ return hbitmap_count(bitmap->bitmap) << BDRV_SECTOR_BITS;
}
int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap)
diff --git a/block/mirror.c b/block/mirror.c
index f404ff3..1b98a77 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -794,11 +794,10 @@ static void coroutine_fn mirror_run(void *opaque)
cnt = bdrv_get_dirty_count(s->dirty_bitmap);
/* s->common.offset contains the number of bytes already processed so
- * far, cnt is the number of dirty sectors remaining and
+ * far, cnt is the number of dirty bytes remaining and
* s->bytes_in_flight is the number of bytes currently being
* processed; together those are the current total operation length */
- s->common.len = s->common.offset + s->bytes_in_flight +
- cnt * BDRV_SECTOR_SIZE;
+ s->common.len = s->common.offset + s->bytes_in_flight + cnt;
/* Note that even when no rate limit is applied we need to yield
* periodically with no pending I/O so that bdrv_drain_all() returns.
@@ -810,8 +809,7 @@ static void coroutine_fn mirror_run(void *opaque)
s->common.iostatus == BLOCK_DEVICE_IO_STATUS_OK) {
if (s->in_flight >= MAX_IN_FLIGHT || s->buf_free_count == 0 ||
(cnt == 0 && s->in_flight > 0)) {
- trace_mirror_yield(s, cnt * BDRV_SECTOR_SIZE,
- s->buf_free_count, s->in_flight);
+ trace_mirror_yield(s, cnt, s->buf_free_count, s->in_flight);
mirror_wait_for_io(s);
continue;
} else if (cnt != 0) {
@@ -852,7 +850,7 @@ static void coroutine_fn mirror_run(void *opaque)
* whether to switch to target check one last time if I/O has
* come in the meanwhile, and if not flush the data to disk.
*/
- trace_mirror_before_drain(s, cnt * BDRV_SECTOR_SIZE);
+ trace_mirror_before_drain(s, cnt);
bdrv_drained_begin(bs);
cnt = bdrv_get_dirty_count(s->dirty_bitmap);
@@ -871,8 +869,7 @@ static void coroutine_fn mirror_run(void *opaque)
}
ret = 0;
- trace_mirror_before_sleep(s, cnt * BDRV_SECTOR_SIZE,
- s->synced, delay_ns);
+ trace_mirror_before_sleep(s, cnt, s->synced, delay_ns);
if (!s->synced) {
block_job_sleep_ns(&s->common, QEMU_CLOCK_REALTIME, delay_ns);
if (block_job_is_cancelled(&s->common)) {
diff --git a/migration/block.c b/migration/block.c
index 9a9c214..3daa5c7 100644
--- a/migration/block.c
+++ b/migration/block.c
@@ -672,7 +672,7 @@ static int64_t get_remaining_dirty(void)
aio_context_release(blk_get_aio_context(bmds->blk));
}
- return dirty << BDRV_SECTOR_BITS;
+ return dirty;
}
/* Called with iothread lock taken. */
--
2.9.3
- Re: [Qemu-devel] [PATCH 03/12] dirty-bitmap: Drop unused functions, (continued)
- [Qemu-devel] [PATCH 04/12] dirty-bitmap: Track size in bytes, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 06/12] dirty-bitmap: Change bdrv_dirty_iter_next() to report byte offset, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 05/12] dirty-bitmap: Set iterator start by offset, not sector, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 08/12] dirty-bitmap: Change bdrv_get_dirty() to take bytes, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 07/12] dirty-bitmap: Change bdrv_get_dirty_count() to report bytes,
Eric Blake <=
- [Qemu-devel] [PATCH 09/12] dirty-bitmap: Change bdrv_[re]set_dirty_bitmap() to use bytes, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 10/12] mirror: Switch mirror_dirty_init() to byte-based iteration, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 11/12] dirty-bitmap: Switch bdrv_set_dirty() to bytes, Eric Blake, 2017/04/12
- [Qemu-devel] [PATCH 12/12] dirty-bitmap: Convert internal hbitmap size/granularity, Eric Blake, 2017/04/12