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change qemu_iovec_to_buf() to match other to,from_buf functions

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It now allows specifying offset within qiov to start from and
amount of bytes to copy.  Actual implementation is just a call
to iov_to_buf().

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Michael Tokarev
2012-06-07 20:21:06 +04:00
parent 1b093c480a
commit d5e6b1619c
7 changed files with 10 additions and 15 deletions
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2
block.c
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@@ -3408,7 +3408,7 @@ static BlockDriverAIOCB *bdrv_aio_rw_vector(BlockDriverState *bs,
acb->bh = qemu_bh_new(bdrv_aio_bh_cb, acb);
if (is_write) {
qemu_iovec_to_buffer(acb->qiov, acb->bounce);
qemu_iovec_to_buf(acb->qiov, 0, acb->bounce, qiov->size);
acb->ret = bs->drv->bdrv_write(bs, sector_num, acb->bounce, nb_sectors);
} else {
acb->ret = bs->drv->bdrv_read(bs, sector_num, acb->bounce, nb_sectors);