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[Qemu-devel] [PATCH 4/4] hw/virtio-blk: add a constant for max number of
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCH 4/4] hw/virtio-blk: add a constant for max number of merged requests |
Date: |
Mon, 20 Oct 2014 16:35:20 +0200 |
As it was not obvious (at least for me) where the 32 comes from
add a constant for it.
Signed-off-by: Peter Lieven <address@hidden>
---
hw/block/virtio-blk.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 6051027..23bc948 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -308,6 +308,8 @@ static bool virtio_blk_sect_range_ok(VirtIOBlock *dev,
return true;
}
+#define MAX_MERGED_REQS 32
+
static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb)
{
BlockRequest *blkreq;
@@ -326,7 +328,7 @@ static void virtio_blk_handle_write(VirtIOBlockReq *req,
MultiReqBuffer *mrb)
block_acct_start(blk_get_stats(req->dev->blk), &req->acct, req->qiov.size,
BLOCK_ACCT_WRITE);
- if (mrb->num_writes == 32) {
+ if (mrb->num_writes == MAX_MERGED_REQS) {
virtio_submit_multiwrite(req->dev->blk, mrb);
}
--
1.7.9.5
- [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Peter Lieven, 2014/10/20
- [Qemu-devel] [PATCH 1/4] block: add accounting for merged requests, Peter Lieven, 2014/10/20
- [Qemu-devel] [PATCH 3/4] block: add a knob to disable multiwrite_merge, Peter Lieven, 2014/10/20
- [Qemu-devel] [PATCH 2/4] block: introduce bdrv_runtime_opts, Peter Lieven, 2014/10/20
- [Qemu-devel] [PATCH 4/4] hw/virtio-blk: add a constant for max number of merged requests,
Peter Lieven <=
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Max Reitz, 2014/10/20
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Peter Lieven, 2014/10/20
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Max Reitz, 2014/10/21
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Peter Lieven, 2014/10/21
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Peter Lieven, 2014/10/21
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Max Reitz, 2014/10/21
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Kevin Wolf, 2014/10/21
- Re: [Qemu-devel] [PATCH 0/4] multiwrite patches for 2.2, Max Reitz, 2014/10/21