[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v15 09/14] stream: Use bdrv_drop_intermediate an
From: |
Jeff Cody |
Subject: |
Re: [Qemu-devel] [PATCH v15 09/14] stream: Use bdrv_drop_intermediate and drop close_unused_images |
Date: |
Wed, 26 Feb 2014 15:31:07 -0500 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Sun, Feb 23, 2014 at 09:54:50AM +0800, Fam Zheng wrote:
> This reuses the new bdrv_drop_intermediate.
>
> Signed-off-by: Fam Zheng <address@hidden>
> ---
> block/stream.c | 30 +-----------------------------
> 1 file changed, 1 insertion(+), 29 deletions(-)
>
> diff --git a/block/stream.c b/block/stream.c
> index dd0b4ac..9cdcf0e 100644
> --- a/block/stream.c
> +++ b/block/stream.c
> @@ -51,34 +51,6 @@ static int coroutine_fn stream_populate(BlockDriverState
> *bs,
> return bdrv_co_copy_on_readv(bs, sector_num, nb_sectors, &qiov);
> }
>
> -static void close_unused_images(BlockDriverState *top, BlockDriverState
> *base,
> - const char *base_id)
> -{
> - BlockDriverState *intermediate;
> - intermediate = top->backing_hd;
> -
> - /* Must assign before bdrv_delete() to prevent traversing dangling
> pointer
> - * while we delete backing image instances.
> - */
> - top->backing_hd = base;
> -
> - while (intermediate) {
> - BlockDriverState *unused;
> -
> - /* reached base */
> - if (intermediate == base) {
> - break;
> - }
> -
> - unused = intermediate;
> - intermediate = intermediate->backing_hd;
> - unused->backing_hd = NULL;
> - bdrv_unref(unused);
> - }
> -
> - bdrv_refresh_limits(top);
> -}
> -
> static void coroutine_fn stream_run(void *opaque)
> {
> StreamBlockJob *s = opaque;
> @@ -192,7 +164,7 @@ wait:
> }
> }
> ret = bdrv_change_backing_file(bs, base_id, base_fmt);
This call to bdrv_change_backing_file() should be removed now, as well
as the supporting code above it (not seen in the diff context):
const char *base_id = NULL, *base_fmt = NULL;
if (base) {
base_id = s->backing_file_id;
if (base->drv) {
base_fmt = base->drv->format_name;
}
}
This is (should be) taken care of in bdrv_drop_intermediate().
> - close_unused_images(bs, base, base_id);
> + bdrv_drop_intermediate(bs, bs->backing_hd, base);
> }
>
> qemu_vfree(buf);
> --
> 1.8.5.4
>
>
- [Qemu-devel] [PATCH v15 01/14] block: Add BlockOpType enum, (continued)
- [Qemu-devel] [PATCH v15 01/14] block: Add BlockOpType enum, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 02/14] block: Introduce op_blockers to BlockDriverState, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 03/14] block: Replace in_use with operation blocker, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 04/14] block: Move op_blocker check from block_job_create to its caller, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 05/14] block: Add bdrv_set_backing_hd(), Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 06/14] block: Add backing_blocker in BlockDriverState, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 07/14] block: Parse "backing" option to reference existing BDS, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 08/14] block: Support dropping active in bdrv_drop_intermediate, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 09/14] stream: Use bdrv_drop_intermediate and drop close_unused_images, Fam Zheng, 2014/02/22
- Re: [Qemu-devel] [PATCH v15 09/14] stream: Use bdrv_drop_intermediate and drop close_unused_images,
Jeff Cody <=
- [Qemu-devel] [PATCH v15 10/14] qmp: Add command 'blockdev-backup', Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 11/14] block: Allow backup on referenced named BlockDriverState, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 12/14] block: Add blockdev-backup to transaction, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 13/14] qemu-iotests: Test blockdev-backup in 055, Fam Zheng, 2014/02/22
- [Qemu-devel] [PATCH v15 14/14] qemu-iotests: Image fleecing test case 083, Fam Zheng, 2014/02/22