[libvirt] [PULL v3 08/19] block/dirty-bitmap: refactor bdrv_dirty_bitmap_next

From: Vladimir Sementsov-Ogievskiy <vsementsov(a)virtuozzo.com&gt; 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(a)virtuozzo.com&gt; Reviewed-by: John Snow <jsnow(a)redhat.com&gt; Message-id: 20190916141911.5255-5-vsementsov(a)virtuozzo.com Signed-off-by: John Snow <jsnow(a)redhat.com&gt; --- include/block/dirty-bitmap.h | 9 +++++++-- block.c | 4 +--- block/dirty-bitmap.c | 11 +++++++---- block/qcow2-bitmap.c | 8 ++------ migration/block-dirty-bitmap.c | 4 +--- 5 files changed, 18 insertions(+), 18 deletions(-) diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 2f9b088e11..257f0f6704 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -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_inconsistent(const BdrvDirtyBitmap *bitmap); 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); int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t offset, uint64_t bytes); diff --git a/block.c b/block.c index d19a4781a3..5721441697 100644 --- a/block.c +++ b/block.c @@ -5390,9 +5390,7 @@ static void coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, } } - for (bm = bdrv_dirty_bitmap_next(bs, NULL); bm; - bm = bdrv_dirty_bitmap_next(bs, bm)) - { + FOR_EACH_DIRTY_BITMAP(bs, bm) { bdrv_dirty_bitmap_skip_store(bm, false); } diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 4e5c87a907..6065db8094 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -851,11 +851,14 @@ bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs) return false; } -BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs, - BdrvDirtyBitmap *bitmap) +BdrvDirtyBitmap *bdrv_dirty_bitmap_first(BlockDriverState *bs) { - return bitmap == NULL ? QLIST_FIRST(&bs->dirty_bitmaps) : - QLIST_NEXT(bitmap, list); + return QLIST_FIRST(&bs->dirty_bitmaps); +} + +BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BdrvDirtyBitmap *bitmap) +{ + return QLIST_NEXT(bitmap, list); } char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp) diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 687087d2bc..99812b418b 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1488,9 +1488,7 @@ void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp) } /* check constraints and names */ - for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap != NULL; - bitmap = bdrv_dirty_bitmap_next(bs, bitmap)) - { + FOR_EACH_DIRTY_BITMAP(bs, bitmap) { const char *name = bdrv_dirty_bitmap_name(bitmap); uint32_t granularity = bdrv_dirty_bitmap_granularity(bitmap); Qcow2Bitmap *bm; @@ -1610,9 +1608,7 @@ int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp) return -EINVAL; } - for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap != NULL; - bitmap = bdrv_dirty_bitmap_next(bs, bitmap)) - { + FOR_EACH_DIRTY_BITMAP(bs, bitmap) { if (bdrv_dirty_bitmap_get_persistence(bitmap)) { bdrv_dirty_bitmap_set_readonly(bitmap, true); } diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c index 793f249aa5..7eafface61 100644 --- a/migration/block-dirty-bitmap.c +++ b/migration/block-dirty-bitmap.c @@ -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)) { const char *name = bdrv_get_device_or_node_name(bs); - for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap; - bitmap = bdrv_dirty_bitmap_next(bs, bitmap)) - { + FOR_EACH_DIRTY_BITMAP(bs, bitmap) { if (!bdrv_dirty_bitmap_name(bitmap)) { continue; } -- 2.21.0