From 56207df55ea546f3e72578a5920e68a346440b1a Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Thu, 12 Oct 2017 16:53:09 +0300 Subject: hbitmap: add next_zero function The function searches for next zero bit. Also add interface for BdrvDirtyBitmap and unit test. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow Message-id: 20171012135313.227864-2-vsementsov@virtuozzo.com Signed-off-by: Jeff Cody --- include/qemu/hbitmap.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/qemu') diff --git a/include/qemu/hbitmap.h b/include/qemu/hbitmap.h index 81e7804..6b6490e 100644 --- a/include/qemu/hbitmap.h +++ b/include/qemu/hbitmap.h @@ -292,6 +292,14 @@ void hbitmap_iter_init(HBitmapIter *hbi, const HBitmap *hb, uint64_t first); */ unsigned long hbitmap_iter_skip_words(HBitmapIter *hbi); +/* hbitmap_next_zero: + * @hb: The HBitmap to operate on + * @start: The bit to start from. + * + * Find next not dirty bit. + */ +int64_t hbitmap_next_zero(const HBitmap *hb, uint64_t start); + /* hbitmap_create_meta: * Create a "meta" hbitmap to track dirtiness of the bits in this HBitmap. * The caller owns the created bitmap and must call hbitmap_free_meta(hb) to -- cgit v1.1