On 9/15/20 11:44 AM, Vladimir Sementsov-Ogievskiy wrote:
Like for read/write in a previous commit, drop extra indirection layer,
generate directly bdrv_readv_vmstate() and bdrv_writev_vmstate().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
block/coroutines.h | 10 +++----
include/block/block.h | 6 ++--
block/io.c | 67 ++++++++++++++++++++++---------------------
3 files changed, 42 insertions(+), 41 deletions(-)
diff --git a/block/coroutines.h b/block/coroutines.h
int coroutine_fn
-bdrv_co_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos,
- bool is_read)
+bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
{
BlockDriver *drv = bs->drv;
int ret = -ENOTSUP;
+ if (!drv) {
+ return -ENOMEDIUM;
+ }
+
bdrv_inc_in_flight(bs);
- if (!drv) {
- ret = -ENOMEDIUM;
- } else if (drv->bdrv_load_vmstate) {
- if (is_read) {
- ret = drv->bdrv_load_vmstate(bs, qiov, pos);
- } else {
- ret = drv->bdrv_save_vmstate(bs, qiov, pos);
- }
+ if (drv->bdrv_load_vmstate) {
+ ret = drv->bdrv_load_vmstate(bs, qiov, pos);
This one makes sense;
} else if (bs->file) {
- ret = bdrv_co_rw_vmstate(bs->file->bs, qiov, pos, is_read);
+ ret = bdrv_co_readv_vmstate(bs->file->bs, qiov, pos);
}
bdrv_dec_in_flight(bs);
+
return ret;
}
-int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf,
- int64_t pos, int size)
+int coroutine_fn
+bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
{
- QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, size);
- int ret;
+ BlockDriver *drv = bs->drv;
+ int ret = -ENOTSUP;
- ret = bdrv_writev_vmstate(bs, &qiov, pos);
- if (ret < 0) {
- return ret;
+ if (!drv) {
+ return -ENOMEDIUM;
}
- return size;
-}
+ bdrv_inc_in_flight(bs);
-int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
-{
- return bdrv_rw_vmstate(bs, qiov, pos, false);
+ if (drv->bdrv_load_vmstate) {
+ ret = drv->bdrv_save_vmstate(bs, qiov, pos);
but this one looks awkward. It represents the pre-patch logic, but it would be
nicer to check for bdrv_save_vmstate. With that tweak, my R-b still stands.