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null: Switch to .bdrv_co_block_status()

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We are gradually moving away from sector-based interfaces, towards
byte-based.  Update the null driver accordingly.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2018-02-13 14:26:49 -06:00 committed by Kevin Wolf
parent 92809c3600
commit 05c33f1021
1 changed files with 12 additions and 11 deletions
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23
block/null.c
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@ -223,22 +223,23 @@ static int null_reopen_prepare(BDRVReopenState *reopen_state,
return 0;
}
static int64_t coroutine_fn null_co_get_block_status(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors, int *pnum,
BlockDriverState **file)
static int coroutine_fn null_co_block_status(BlockDriverState *bs,
bool want_zero, int64_t offset,
int64_t bytes, int64_t *pnum,
int64_t *map,
BlockDriverState **file)
{
BDRVNullState *s = bs->opaque;
off_t start = sector_num * BDRV_SECTOR_SIZE;
int ret = BDRV_BLOCK_OFFSET_VALID;
*pnum = nb_sectors;
*pnum = bytes;
*map = offset;
*file = bs;
if (s->read_zeroes) {
return BDRV_BLOCK_OFFSET_VALID | start | BDRV_BLOCK_ZERO;
} else {
return BDRV_BLOCK_OFFSET_VALID | start;
ret |= BDRV_BLOCK_ZERO;
}
return ret;
}
static void null_refresh_filename(BlockDriverState *bs, QDict *opts)
@ -270,7 +271,7 @@ static BlockDriver bdrv_null_co = {
.bdrv_co_flush_to_disk = null_co_flush,
.bdrv_reopen_prepare = null_reopen_prepare,
.bdrv_co_get_block_status = null_co_get_block_status,
.bdrv_co_block_status = null_co_block_status,
.bdrv_refresh_filename = null_refresh_filename,
};
@ -290,7 +291,7 @@ static BlockDriver bdrv_null_aio = {
.bdrv_aio_flush = null_aio_flush,
.bdrv_reopen_prepare = null_reopen_prepare,
.bdrv_co_get_block_status = null_co_get_block_status,
.bdrv_co_block_status = null_co_block_status,
.bdrv_refresh_filename = null_refresh_filename,
};