tree cf89f36252648025036de3ccefbee91f501b453c
parent 767de537b1268d20dca363a74ba8c8931212d243
author Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> 1570784827 +0300
committer Max Reitz <mreitz@redhat.com> 1572258150 +0100

hbitmap: handle set/reset with zero length

Passing zero length to these functions leads to unpredicted results.
Zero-length set/reset may occur in active-mirror, on zero-length write
(which is unlikely, but not guaranteed to never happen).

Let's just do nothing on zero-length request.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20191011090711.19940-2-vsementsov@virtuozzo.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>