Because raw can be seen as a "passthrough" format, its implementation of bdrv_co_map_range is exactly the same as bdrv_co_block_status. The BDRV_REQ_ALLOCATE flag can be ignored because no metadata update is necessary.
Signed-off-by: Fam Zheng <f...@redhat.com> --- block/raw-format.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/block/raw-format.c b/block/raw-format.c index a378547c99..95e81af22d 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -263,6 +263,14 @@ static int coroutine_fn raw_co_block_status(BlockDriverState *bs, return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID; } +static int coroutine_fn raw_co_map_range(BlockDriverState *bs, int64_t offset, + int64_t bytes, int64_t *pnum, int64_t *map, + BlockDriverState **file, + int flags) +{ + return raw_co_block_status(bs, true, offset, bytes, pnum, map, file); +} + static int coroutine_fn raw_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes, BdrvRequestFlags flags) @@ -498,6 +506,7 @@ BlockDriver bdrv_raw = { .bdrv_co_pwrite_zeroes = &raw_co_pwrite_zeroes, .bdrv_co_pdiscard = &raw_co_pdiscard, .bdrv_co_block_status = &raw_co_block_status, + .bdrv_co_map_range = &raw_co_map_range, .bdrv_truncate = &raw_truncate, .bdrv_getlength = &raw_getlength, .has_variable_length = true, -- 2.14.3