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From 08530984c8ea08a6e0494e91576ff24917c46e14 Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Fri, 31 Oct 2014 16:29:52 +0100
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Subject: [PATCH 15/19] virtio-blk: Factor common checks out of
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virtio_blk_handle_read/write()
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Message-id: <1414772996-17272-2-git-send-email-armbru@redhat.com>
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Patchwork-id: 62018
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O-Subject: [PATCH RHEL-7.1 qemu-kvm 1/5] virtio-blk: Factor common checks out of virtio_blk_handle_read/write()
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Bugzilla: 1085232
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Reviewed-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit d0e14376eefc40b07c8fb42c132c2202c66dcb0b)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/block/virtio-blk.c | 24 ++++++++++++++----------
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1 file changed, 14 insertions(+), 10 deletions(-)
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diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
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index a96207d..0f1d3ec 100644
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--- a/hw/block/virtio-blk.c
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+++ b/hw/block/virtio-blk.c
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@@ -281,6 +281,18 @@ static void virtio_blk_handle_flush(VirtIOBlockReq *req, MultiReqBuffer *mrb)
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bdrv_aio_flush(req->dev->bs, virtio_blk_flush_complete, req);
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}
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+static bool virtio_blk_sect_range_ok(VirtIOBlock *dev,
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+ uint64_t sector, size_t size)
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+{
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+ if (sector & dev->sector_mask) {
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+ return false;
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+ }
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+ if (size % dev->conf->logical_block_size) {
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+ return false;
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+ }
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+ return true;
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+}
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+
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static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb)
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{
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BlockRequest *blkreq;
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@@ -292,11 +304,7 @@ static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb)
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trace_virtio_blk_handle_write(req, sector, req->qiov.size / 512);
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- if (sector & req->dev->sector_mask) {
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- virtio_blk_rw_complete(req, -EIO);
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- return;
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- }
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- if (req->qiov.size % req->dev->conf->logical_block_size) {
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+ if (!virtio_blk_sect_range_ok(req->dev, sector, req->qiov.size)) {
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virtio_blk_rw_complete(req, -EIO);
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return;
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}
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@@ -326,11 +334,7 @@ static void virtio_blk_handle_read(VirtIOBlockReq *req)
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trace_virtio_blk_handle_read(req, sector, req->qiov.size / 512);
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- if (sector & req->dev->sector_mask) {
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- virtio_blk_rw_complete(req, -EIO);
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- return;
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- }
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- if (req->qiov.size % req->dev->conf->logical_block_size) {
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+ if (!virtio_blk_sect_range_ok(req->dev, sector, req->qiov.size)) {
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virtio_blk_rw_complete(req, -EIO);
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return;
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}
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--
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1.8.3.1
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