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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/qcow.c
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@ -569,7 +569,7 @@ static coroutine_fn int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
if (qiov->niov > 1) {
buf = orig_buf = qemu_blockalign(bs, qiov->size);
qemu_iovec_to_buffer(qiov, buf);
qemu_iovec_to_buf(qiov, 0, buf, qiov->size);
} else {
orig_buf = NULL;
buf = (uint8_t *)qiov->iov->iov_base;