From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59134) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7i3i-0000uL-Di for qemu-devel@nongnu.org; Thu, 26 Oct 2017 09:18:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e7i3d-0002Lu-OH for qemu-devel@nongnu.org; Thu, 26 Oct 2017 09:18:54 -0400 From: Kevin Wolf Date: Thu, 26 Oct 2017 15:17:30 +0200 Message-Id: <20171026131741.5059-25-kwolf@redhat.com> In-Reply-To: <20171026131741.5059-1-kwolf@redhat.com> References: <20171026131741.5059-1-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 24/35] block: Reduce bdrv_aligned_preadv() rounding List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, qemu-devel@nongnu.org From: Eric Blake Now that bdrv_is_allocated accepts non-aligned inputs, we can remove the TODO added in commit d6a644bb. Signed-off-by: Eric Blake Reviewed-by: John Snow Signed-off-by: Kevin Wolf --- block/io.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/block/io.c b/block/io.c index d2cb20d872..3d5ef2cabe 100644 --- a/block/io.c +++ b/block/io.c @@ -1124,18 +1124,14 @@ static int coroutine_fn bdrv_aligned_preadv(BdrvChild *child, } if (flags & BDRV_REQ_COPY_ON_READ) { - /* TODO: Simplify further once bdrv_is_allocated no longer - * requires sector alignment */ - int64_t start = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE); - int64_t end = QEMU_ALIGN_UP(offset + bytes, BDRV_SECTOR_SIZE); int64_t pnum; - ret = bdrv_is_allocated(bs, start, end - start, &pnum); + ret = bdrv_is_allocated(bs, offset, bytes, &pnum); if (ret < 0) { goto out; } - if (!ret || pnum != end - start) { + if (!ret || pnum != bytes) { ret = bdrv_co_do_copy_on_readv(child, offset, bytes, qiov); goto out; } -- 2.13.6