From: Eric Blake <eblake@redhat.com>
To: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Cc: kwolf@redhat.com, fam@euphon.net, mreitz@redhat.com,
stefanha@redhat.com, den@openvz.org, jsnow@redhat.com
Subject: Re: [Qemu-devel] [PATCH v3 2/3] block/stream: use BDRV_REQ_PREFETCH
Date: Mon, 29 Jul 2019 16:19:28 -0500 [thread overview]
Message-ID: <3916bd0a-561e-637b-1445-76fe19ce5321@redhat.com> (raw)
In-Reply-To: <20190725100550.33801-3-vsementsov@virtuozzo.com>
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On 7/25/19 5:05 AM, Vladimir Sementsov-Ogievskiy wrote:
> This helps to avoid extra io, allocations and memory copying.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
> block/stream.c | 20 +++++++-------------
> 1 file changed, 7 insertions(+), 13 deletions(-)
>
> diff --git a/block/stream.c b/block/stream.c
> index 6ac1e7bec4..170e3b43be 100644
> --- a/block/stream.c
> +++ b/block/stream.c
> @@ -22,11 +22,11 @@
>
> enum {
> /*
> - * Size of data buffer for populating the image file. This should be large
> + * Maximum chunk size to feed it to copy-on-read. This should be large
s/feed it/feed/
Will fix during staging
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
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next prev parent reply other threads:[~2019-07-29 21:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-25 10:05 [Qemu-devel] [PATCH v3 for-4.2 0/3] block: BDRV_REQ_PREFETCH Vladimir Sementsov-Ogievskiy
2019-07-25 10:05 ` [Qemu-devel] [PATCH v3 1/3] block: implement BDRV_REQ_PREFETCH Vladimir Sementsov-Ogievskiy
2019-07-29 21:13 ` Eric Blake
2019-07-25 10:05 ` [Qemu-devel] [PATCH v3 2/3] block/stream: use BDRV_REQ_PREFETCH Vladimir Sementsov-Ogievskiy
2019-07-29 21:19 ` Eric Blake [this message]
2019-07-25 10:05 ` [Qemu-devel] [PATCH v3 3/3] nbd: improve CMD_CACHE: " Vladimir Sementsov-Ogievskiy
2019-07-29 21:24 ` Eric Blake
2019-07-29 15:00 ` [Qemu-devel] [Qemu-block] [PATCH v3 for-4.2 0/3] block: BDRV_REQ_PREFETCH Stefan Hajnoczi
2019-07-29 15:29 ` Vladimir Sementsov-Ogievskiy
2019-07-29 15:38 ` Eric Blake
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