diff options
| -rw-r--r-- | block/parallels.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/block/parallels.c b/block/parallels.c index 1808029f14..d026ce9e2f 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -582,6 +582,19 @@ done: return ret; } +static int coroutine_fn GRAPH_RDLOCK +parallels_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes, + BdrvRequestFlags flags) +{ + /* + * The zero flag is missed in the Parallels format specification. We can + * resort to discard if we have no backing file (this condition is checked + * inside parallels_co_pdiscard(). + */ + return parallels_co_pdiscard(bs, offset, bytes); +} + + static void parallels_check_unclean(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix) @@ -1463,6 +1476,7 @@ static BlockDriver bdrv_parallels = { .bdrv_co_create_opts = parallels_co_create_opts, .bdrv_co_check = parallels_co_check, .bdrv_co_pdiscard = parallels_co_pdiscard, + .bdrv_co_pwrite_zeroes = parallels_co_pwrite_zeroes, }; static void bdrv_parallels_init(void) |