diff options
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/hbitmap.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/qemu/hbitmap.h b/include/qemu/hbitmap.h index a7cb780592..135975530f 100644 --- a/include/qemu/hbitmap.h +++ b/include/qemu/hbitmap.h @@ -300,12 +300,16 @@ void hbitmap_iter_init(HBitmapIter *hbi, const HBitmap *hb, uint64_t first); unsigned long hbitmap_iter_skip_words(HBitmapIter *hbi); /* hbitmap_next_zero: + * + * Find next not dirty bit within selected range. If not found, return -1. + * * @hb: The HBitmap to operate on * @start: The bit to start from. - * - * Find next not dirty bit. + * @count: Number of bits to proceed. If @start+@count > bitmap size, the whole + * bitmap is looked through. You can use UINT64_MAX as @count to search up to + * the bitmap end. */ -int64_t hbitmap_next_zero(const HBitmap *hb, uint64_t start); +int64_t hbitmap_next_zero(const HBitmap *hb, uint64_t start, uint64_t count); /* hbitmap_create_meta: * Create a "meta" hbitmap to track dirtiness of the bits in this HBitmap. |