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migration/block: use qemu_iovec_init_buf

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Use new qemu_iovec_init_buf() instead of
qemu_iovec_init_external( ... , 1), which simplifies the code.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190218140926.333779-14-vsementsov@virtuozzo.com
Message-Id: <20190218140926.333779-14-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-02-18 17:09:22 +03:00 committed by Stefan Hajnoczi
parent c075a0af22
commit f556f37b11
1 changed files with 3 additions and 7 deletions
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10
migration/block.c
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@ -83,7 +83,6 @@ typedef struct BlkMigBlock {
BlkMigDevState *bmds;
int64_t sector;
int nr_sectors;
struct iovec iov;
QEMUIOVector qiov;
BlockAIOCB *aiocb;
@ -314,9 +313,7 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds)
blk->sector = cur_sector;
blk->nr_sectors = nr_sectors;
blk->iov.iov_base = blk->buf;
blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
qemu_iovec_init_buf(&blk->qiov, blk->buf, nr_sectors * BDRV_SECTOR_SIZE);
blk_mig_lock();
block_mig_state.submitted++;
@ -556,9 +553,8 @@ static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds,
blk->nr_sectors = nr_sectors;
if (is_async) {
blk->iov.iov_base = blk->buf;
blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
qemu_iovec_init_buf(&blk->qiov, blk->buf,
nr_sectors * BDRV_SECTOR_SIZE);
blk->aiocb = blk_aio_preadv(bmds->blk,
sector * BDRV_SECTOR_SIZE,