Received: from eggs.gnu.org ([2001:4830:134:3::10]:40938) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYdKI-0007sx-Cl for qemu-devel@nongnu.org; Thu, 28 Jun 2018 16:15:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fYdKH-0007YY-Do for qemu-devel@nongnu.org; Thu, 28 Jun 2018 16:15:34 -0400 From: Eric Blake Date: Thu, 28 Jun 2018 15:15:18 -0500 Message-Id: <20180628201525.281787-2-eblake@redhat.com> In-Reply-To: <20180628201525.281787-1-eblake@redhat.com> References: <20180628201525.281787-1-eblake@redhat.com> Subject: [Qemu-devel] [PATCH v3 1/8] parallels: Switch to byte-based calls List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: jcody@redhat.com, kwolf@redhat.com, famz@redhat.com, stefanha@redhat.com, mreitz@redhat.com, qemu-block@nongnu.org, "Denis V. Lunev" We are gradually moving away from sector-based interfaces, towards byte-based. Make the change for the last few sector-based calls into the block layer from the parallels driver. Ideally, the parallels driver should switch to doing everything byte-based, but that's a more invasive change that requires a bit more auditing. Signed-off-by: Eric Blake Reviewed-by: Stefan Hajnoczi Reviewed-by: Denis V. Lunev Reviewed-by: Jeff Cody --- block/parallels.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index fd215e202a5..cc9445879d7 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -227,14 +227,15 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num, }; qemu_iovec_init_external(&qiov, &iov, 1); - ret = bdrv_co_readv(bs->backing, idx * s->tracks, nb_cow_sectors, - &qiov); + ret = bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE, + nb_cow_bytes, &qiov, 0); if (ret < 0) { qemu_vfree(iov.iov_base); return ret; } - ret = bdrv_co_writev(bs->file, s->data_end, nb_cow_sectors, &qiov); + ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE, + nb_cow_bytes, &qiov, 0); qemu_vfree(iov.iov_base); if (ret < 0) { return ret; @@ -340,7 +341,8 @@ static coroutine_fn int parallels_co_writev(BlockDriverState *bs, qemu_iovec_reset(&hd_qiov); qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes); - ret = bdrv_co_writev(bs->file, position, n, &hd_qiov); + ret = bdrv_co_pwritev(bs->file, position * BDRV_SECTOR_SIZE, nbytes, + &hd_qiov, 0); if (ret < 0) { break; } @@ -379,7 +381,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs, if (position < 0) { if (bs->backing) { - ret = bdrv_co_readv(bs->backing, sector_num, n, &hd_qiov); + ret = bdrv_co_preadv(bs->backing, sector_num * BDRV_SECTOR_SIZE, + nbytes, &hd_qiov, 0); if (ret < 0) { break; } @@ -387,7 +390,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs, qemu_iovec_memset(&hd_qiov, 0, 0, nbytes); } } else { - ret = bdrv_co_readv(bs->file, position, n, &hd_qiov); + ret = bdrv_co_preadv(bs->file, position * BDRV_SECTOR_SIZE, nbytes, + &hd_qiov, 0); if (ret < 0) { break; } -- 2.14.4