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block: Convert bdrv_co_do_readv/writev to BdrvChild 

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2016-05-30 13:52:34 +02:00
parent 0d1049c7d1
commit adad6496c5
1 changed files with 15 additions and 14 deletions
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29
block/io.c
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@ -33,7 +33,7 @@
#define NOT_DONE 0x7fffffff /* used while emulated sync operation in progress */
static BlockAIOCB *bdrv_co_aio_rw_vector(BlockDriverState *bs,
static BlockAIOCB *bdrv_co_aio_rw_vector(BdrvChild *child,
int64_t sector_num,
QEMUIOVector *qiov,
int nb_sectors,
@ -1129,7 +1129,7 @@ int coroutine_fn bdrv_co_preadv(BlockDriverState *bs,
return ret;
}
static int coroutine_fn bdrv_co_do_readv(BlockDriverState *bs,
static int coroutine_fn bdrv_co_do_readv(BdrvChild *child,
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
@ -1137,7 +1137,7 @@ static int coroutine_fn bdrv_co_do_readv(BlockDriverState *bs,
return -EINVAL;
}
return bdrv_co_preadv(bs, sector_num << BDRV_SECTOR_BITS,
return bdrv_co_preadv(child->bs, sector_num << BDRV_SECTOR_BITS,
nb_sectors << BDRV_SECTOR_BITS, qiov, flags);
}
@ -1146,7 +1146,7 @@ int coroutine_fn bdrv_co_readv(BdrvChild *child, int64_t sector_num,
{
trace_bdrv_co_readv(child->bs, sector_num, nb_sectors);
return bdrv_co_do_readv(child->bs, sector_num, nb_sectors, qiov, 0);
return bdrv_co_do_readv(child, sector_num, nb_sectors, qiov, 0);
}
/* Maximum buffer for write zeroes fallback, in bytes */
@ -1535,7 +1535,7 @@ out:
return ret;
}
static int coroutine_fn bdrv_co_do_writev(BlockDriverState *bs,
static int coroutine_fn bdrv_co_do_writev(BdrvChild *child,
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
@ -1543,7 +1543,7 @@ static int coroutine_fn bdrv_co_do_writev(BlockDriverState *bs,
return -EINVAL;
}
return bdrv_co_pwritev(bs, sector_num << BDRV_SECTOR_BITS,
return bdrv_co_pwritev(child->bs, sector_num << BDRV_SECTOR_BITS,
nb_sectors << BDRV_SECTOR_BITS, qiov, flags);
}
@ -1552,7 +1552,7 @@ int coroutine_fn bdrv_co_writev(BdrvChild *child, int64_t sector_num,
{
trace_bdrv_co_writev(child->bs, sector_num, nb_sectors);
return bdrv_co_do_writev(child->bs, sector_num, nb_sectors, qiov, 0);
return bdrv_co_do_writev(child, sector_num, nb_sectors, qiov, 0);
}
int coroutine_fn bdrv_co_pwrite_zeroes(BlockDriverState *bs,
@ -1968,7 +1968,7 @@ BlockAIOCB *bdrv_aio_readv(BdrvChild *child, int64_t sector_num,
{
trace_bdrv_aio_readv(child->bs, sector_num, nb_sectors, opaque);
return bdrv_co_aio_rw_vector(child->bs, sector_num, qiov, nb_sectors, 0,
return bdrv_co_aio_rw_vector(child, sector_num, qiov, nb_sectors, 0,
cb, opaque, false);
}
@ -1978,7 +1978,7 @@ BlockAIOCB *bdrv_aio_writev(BdrvChild *child, int64_t sector_num,
{
trace_bdrv_aio_writev(child->bs, sector_num, nb_sectors, opaque);
return bdrv_co_aio_rw_vector(child->bs, sector_num, qiov, nb_sectors, 0,
return bdrv_co_aio_rw_vector(child, sector_num, qiov, nb_sectors, 0,
cb, opaque, true);
}
@ -2034,6 +2034,7 @@ typedef struct BlockRequest {
typedef struct BlockAIOCBCoroutine {
BlockAIOCB common;
BdrvChild *child;
BlockRequest req;
bool is_write;
bool need_bh;
@ -2077,20 +2078,19 @@ static void bdrv_co_maybe_schedule_bh(BlockAIOCBCoroutine *acb)
static void coroutine_fn bdrv_co_do_rw(void *opaque)
{
BlockAIOCBCoroutine *acb = opaque;
BlockDriverState *bs = acb->common.bs;
if (!acb->is_write) {
acb->req.error = bdrv_co_do_readv(bs, acb->req.sector,
acb->req.error = bdrv_co_do_readv(acb->child, acb->req.sector,
acb->req.nb_sectors, acb->req.qiov, acb->req.flags);
} else {
acb->req.error = bdrv_co_do_writev(bs, acb->req.sector,
acb->req.error = bdrv_co_do_writev(acb->child, acb->req.sector,
acb->req.nb_sectors, acb->req.qiov, acb->req.flags);
}
bdrv_co_complete(acb);
}
static BlockAIOCB *bdrv_co_aio_rw_vector(BlockDriverState *bs,
static BlockAIOCB *bdrv_co_aio_rw_vector(BdrvChild *child,
int64_t sector_num,
QEMUIOVector *qiov,
int nb_sectors,
@ -2102,7 +2102,8 @@ static BlockAIOCB *bdrv_co_aio_rw_vector(BlockDriverState *bs,
Coroutine *co;
BlockAIOCBCoroutine *acb;
acb = qemu_aio_get(&bdrv_em_co_aiocb_info, bs, cb, opaque);
acb = qemu_aio_get(&bdrv_em_co_aiocb_info, child->bs, cb, opaque);
acb->child = child;
acb->need_bh = true;
acb->req.error = -EINPROGRESS;
acb->req.sector = sector_num;