diff options
| author | Juan Quintela <quintela@redhat.com> | 2013-10-08 16:12:17 +0200 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2014-01-13 14:04:54 +0100 |
| commit | 164590a60fd685399da259ac41b338d9a0b9d6c0 (patch) | |
| tree | 5afe310f39b0d4978aeb1e2aa6be7f485266a6f1 | |
| parent | e8a97cafc4108fa964807eb9cbce7eda698f99bb (diff) | |
bitmap: Add bitmap_zero_extend operation
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
| -rw-r--r-- | include/qemu/bitmap.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h index afdd257d8f..1babd5d812 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 */ |