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dirty-bitmap: make it possible to restore bitmap after merge

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Add backup parameter to bdrv_merge_dirty_bitmap() to be used then with
bdrv_restore_dirty_bitmap() if it needed to restore the bitmap after
merge operation.

This is needed to implement bitmap merge transaction action in further
commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2018-10-29 16:23:15 -04:00 • committed by John Snow
parent 56bd662497
commit fa000f2f9f
5 changed files with 39 additions and 16 deletions
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2
blockdev.c
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@ -2968,7 +2968,7 @@ void qmp_x_block_dirty_bitmap_merge(const char *node, const char *dst_name,
return;
}
bdrv_merge_dirty_bitmap(dst, src, errp);
bdrv_merge_dirty_bitmap(dst, src, NULL, errp);
}
BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node,