From: Stefan Hajnoczi <stefanha@gmail.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] qcow2: Add bdrv_discard support
Date: Fri, 28 Jan 2011 12:46:25 +0000 [thread overview]
Message-ID: <AANLkTiki_0uWjdM+YxDDjoDZ71NS2nq99a3kWNpeV6w=@mail.gmail.com> (raw)
In-Reply-To: <1296214910-5131-1-git-send-email-kwolf@redhat.com>
On Fri, Jan 28, 2011 at 11:41 AM, Kevin Wolf <kwolf@redhat.com> wrote:
> This adds a bdrv_discard function to qcow2 that frees the discarded clusters.
> It does not yet pass the discard on to the underlying file system driver, but
> the space can be reused by future writes to the image.
>
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>
> v2:
> - Added offset > end_offset check
>
> block/qcow2-cluster.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++
> block/qcow2.c | 8 +++++
> block/qcow2.h | 2 +
> 3 files changed, 92 insertions(+), 0 deletions(-)
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
next prev parent reply other threads:[~2011-01-28 12:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-28 11:41 [Qemu-devel] [PATCH v2] qcow2: Add bdrv_discard support Kevin Wolf
2011-01-28 12:46 ` Stefan Hajnoczi [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-08-24 16:38 Jun Li
2014-08-27 14:12 ` Stefan Hajnoczi
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