[v2,01/19] block/block-copy: move copy_bitmap initialization to block_copy_state_new()

Commit Message

Vladimir Sementsov-Ogievskiy Aug. 27, 2021, 6:17 p.m. UTC

We are going to complicate bitmap initialization in the further
commit. And in future, backup job will be able to work without filter
(when source is immutable), so we'll need same bitmap initialization in
copy-before-write filter and in backup job. So, it's reasonable to do
it in block-copy.

Note that for now cbw_open() is the only caller of
block_copy_state_new().

Signed-off-by: Vladimir Sementsov-Ogievskiy <[e-mail]>
---
 block/block-copy.c        | 1 +
 block/copy-before-write.c | 4 ----
 2 files changed, 1 insertion(+), 4 deletions(-)

Patch

diff --git a/block/block-copy.c b/block/block-copy.c
index 37d804ec42..c39cb5fda7 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -401,6 +401,7 @@  BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
         return NULL;
     }
     bdrv_disable_dirty_bitmap(copy_bitmap);
+    bdrv_set_dirty_bitmap(copy_bitmap, 0, bdrv_dirty_bitmap_size(copy_bitmap));
 
     /*
      * If source is in backing chain of target assume that target is going to be
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 2a5e57deca..f5551cd15b 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -148,7 +148,6 @@  static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
                     Error **errp)
 {
     BDRVCopyBeforeWriteState *s = bs->opaque;
-    BdrvDirtyBitmap *copy_bitmap;
 
     bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
                                BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
@@ -176,9 +175,6 @@  static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
         return -EINVAL;
     }
 
-    copy_bitmap = block_copy_dirty_bitmap(s->bcs);
-    bdrv_set_dirty_bitmap(copy_bitmap, 0, bdrv_dirty_bitmap_size(copy_bitmap));
-
     return 0;
 }