Signed-off-by: Juan Quintela <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
include/qemu/bitmap.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h
index afdd257..1babd5d 100644
--- a/include/qemu/bitmap.h
+++ b/include/qemu/bitmap.h
@@ -220,4 +220,13 @@ unsigned long bitmap_find_next_zero_area(unsigned long
*map,
unsigned long nr,
unsigned long align_mask);
+static inline unsigned long *bitmap_zero_extend(unsigned long *old,
+ long old_nbits, long new_nbits)
+{
+ long new_len = BITS_TO_LONGS(new_nbits) * sizeof(unsigned long);
+ unsigned long *new = g_realloc(old, new_len);
+ bitmap_clear(new, old_nbits, new_nbits - old_nbits);
+ return new;
+}
+
#endif /* BITMAP_H */