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block: Resize bitmaps on bdrv_truncate

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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1429314609-29776-16-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
John Snow 2015-04-17 19:50:03 -04:00 • committed by Kevin Wolf
parent 20dca81075
commit ce1ffea8cd
3 changed files with 76 additions and 0 deletions
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10
include/qemu/hbitmap.h
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@ -64,6 +64,16 @@ struct HBitmapIter {
*/
HBitmap *hbitmap_alloc(uint64_t size, int granularity);
/**
* hbitmap_truncate:
* @hb: The bitmap to change the size of.
* @size: The number of elements to change the bitmap to accommodate.
*
* truncate or grow an existing bitmap to accommodate a new number of elements.
* This may invalidate existing HBitmapIterators.
*/
void hbitmap_truncate(HBitmap *hb, uint64_t size);
/**
* hbitmap_merge:
* @a: The bitmap to store the result in.