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From 707398814bf924b6c430a49897171d1322011bff Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Thu, 26 Sep 2013 19:55:33 +0800
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Subject: [PATCH 18/37] block: use DIV_ROUND_UP in bdrv_co_do_readv
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Message-id: <1392117622-28812-19-git-send-email-kwolf@redhat.com>
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Patchwork-id: 57183
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O-Subject: [RHEL-7.0 qemu-kvm PATCH v2 18/37] block: use DIV_ROUND_UP in bdrv_co_do_readv
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Bugzilla: 748906
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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From: Fam Zheng <famz@redhat.com>
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Signed-off-by: Fam Zheng <famz@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit d055a1fec37ec84fd3e87d48a0e766a9ff8369c4)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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block.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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---
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block.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/block.c b/block.c
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index 645bcd0..feeab4e 100644
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--- a/block.c
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+++ b/block.c
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@@ -2795,7 +2795,7 @@ static int coroutine_fn bdrv_aligned_preadv(BlockDriverState *bs,
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goto out;
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}
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- total_sectors = (len + BDRV_SECTOR_SIZE - 1) >> BDRV_SECTOR_BITS;
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+ total_sectors = DIV_ROUND_UP(len, BDRV_SECTOR_SIZE);
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max_nb_sectors = MAX(0, total_sectors - sector_num);
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if (max_nb_sectors > 0) {
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ret = drv->bdrv_co_readv(bs, sector_num,
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--
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1.7.1
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