diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/mirror.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/block/mirror.c b/block/mirror.c index b344182c74..bc982cb99a 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -1514,9 +1514,12 @@ do_sync_target_write(MirrorBlockJob *job, MirrorMethod method, assert(!qiov); ret = blk_co_pwrite_zeroes(job->target, offset, bytes, flags); if (job->zero_bitmap && ret >= 0) { - bitmap_set(job->zero_bitmap, dirty_bitmap_offset / job->granularity, - (dirty_bitmap_end - dirty_bitmap_offset) / - job->granularity); + if (dirty_bitmap_offset < dirty_bitmap_end) { + bitmap_set(job->zero_bitmap, + dirty_bitmap_offset / job->granularity, + (dirty_bitmap_end - dirty_bitmap_offset) / + job->granularity); + } } break; |