diff options
Diffstat (limited to 'block/io.c')
| -rw-r--r-- | block/io.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c index 7ac9897559..e12f303df5 100644 --- a/block/io.c +++ b/block/io.c @@ -1427,6 +1427,14 @@ int coroutine_fn bdrv_co_pwritev(BlockDriverState *bs, bytes += offset & (align - 1); offset = offset & ~(align - 1); + + /* We have read the tail already if the request is smaller + * than one aligned block. + */ + if (bytes < align) { + qemu_iovec_add(&local_qiov, head_buf + bytes, align - bytes); + bytes = align; + } } if ((offset + bytes) & (align - 1)) { |