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block/dirty-bitmap: refactor bdrv_dirty_bitmap_next

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bdrv_dirty_bitmap_next is always used in same pattern. So, split it
into _next and _first, instead of combining two functions into one and
add FOR_EACH_DIRTY_BITMAP macro.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20190916141911.5255-5-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-09-16 17:19:11 +03:00 • committed by John Snow
parent 1e63830160
commit ef9041a7b8
5 changed files with 18 additions and 18 deletions
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4
block.c
View file

@ -5390,9 +5390,7 @@ static void coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs,
} }
} }
for (bm = bdrv_dirty_bitmap_next(bs, NULL); bm; FOR_EACH_DIRTY_BITMAP(bs, bm) {
bm = bdrv_dirty_bitmap_next(bs, bm))
{
bdrv_dirty_bitmap_skip_store(bm, false); bdrv_dirty_bitmap_skip_store(bm, false);
} }

11
block/dirty-bitmap.c
View file

@ -851,11 +851,14 @@ bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs)
return false; return false;
} }
BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs, BdrvDirtyBitmap *bdrv_dirty_bitmap_first(BlockDriverState *bs)
BdrvDirtyBitmap *bitmap)
{ {
return bitmap == NULL ? QLIST_FIRST(&bs->dirty_bitmaps) : return QLIST_FIRST(&bs->dirty_bitmaps);
QLIST_NEXT(bitmap, list); }
BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BdrvDirtyBitmap *bitmap)
{
return QLIST_NEXT(bitmap, list);
} }
char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp) char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp)

8
block/qcow2-bitmap.c
View file

@ -1488,9 +1488,7 @@ void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp)
} }
/* check constraints and names */ /* check constraints and names */
for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap != NULL; FOR_EACH_DIRTY_BITMAP(bs, bitmap) {
bitmap = bdrv_dirty_bitmap_next(bs, bitmap))
{
const char *name = bdrv_dirty_bitmap_name(bitmap); const char *name = bdrv_dirty_bitmap_name(bitmap);
uint32_t granularity = bdrv_dirty_bitmap_granularity(bitmap); uint32_t granularity = bdrv_dirty_bitmap_granularity(bitmap);
Qcow2Bitmap *bm; Qcow2Bitmap *bm;
@ -1610,9 +1608,7 @@ int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp)
return -EINVAL; return -EINVAL;
} }
for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap != NULL; FOR_EACH_DIRTY_BITMAP(bs, bitmap) {
bitmap = bdrv_dirty_bitmap_next(bs, bitmap))
{
if (bdrv_dirty_bitmap_get_persistence(bitmap)) { if (bdrv_dirty_bitmap_get_persistence(bitmap)) {
bdrv_dirty_bitmap_set_readonly(bitmap, true); bdrv_dirty_bitmap_set_readonly(bitmap, true);
} }

9
include/block/dirty-bitmap.h
View file

@ -96,8 +96,13 @@ bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap); bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap); bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap);
bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs); bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap); BdrvDirtyBitmap *bdrv_dirty_bitmap_first(BlockDriverState *bs);
BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BdrvDirtyBitmap *bitmap);
#define FOR_EACH_DIRTY_BITMAP(bs, bitmap) \
for (bitmap = bdrv_dirty_bitmap_first(bs); bitmap; \
bitmap = bdrv_dirty_bitmap_next(bitmap))
char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp); char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp);
int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t offset, int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t offset,
uint64_t bytes); uint64_t bytes);

4
migration/block-dirty-bitmap.c
View file

@ -283,9 +283,7 @@ static int init_dirty_bitmap_migration(void)
for (bs = bdrv_next_all_states(NULL); bs; bs = bdrv_next_all_states(bs)) { for (bs = bdrv_next_all_states(NULL); bs; bs = bdrv_next_all_states(bs)) {
const char *name = bdrv_get_device_or_node_name(bs); const char *name = bdrv_get_device_or_node_name(bs);
for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap; FOR_EACH_DIRTY_BITMAP(bs, bitmap) {
bitmap = bdrv_dirty_bitmap_next(bs, bitmap))
{
if (!bdrv_dirty_bitmap_name(bitmap)) { if (!bdrv_dirty_bitmap_name(bitmap)) {
continue; continue;
} }