From: Kevin Wolf <kwolf@redhat.com>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: qemu-trivial@nongnu.org, Stefan Weil <weil@mail.berlios.de>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-trivial] [PATCH] Teach block/vdi about "discarded" (no longer allocated) blocks
Date: Thu, 27 Oct 2011 10:53:42 +0200 [thread overview]
Message-ID: <4EA91C16.6050908@redhat.com> (raw)
In-Reply-To: <1319658678-18355-1-git-send-email-sunshine@sunshineco.com>
Am 26.10.2011 21:51, schrieb Eric Sunshine:
> An entry in the VDI block map will hold an offset to the actual block if
> the block is allocated, or one of two specially-interpreted values if
> not allocated. Using VirtualBox terminology, value VDI_IMAGE_BLOCK_FREE
> (0xffffffff) represents a never-allocated block (semantically arbitrary
> content). VDI_IMAGE_BLOCK_ZERO (0xfffffffe) represents a "discarded"
> block (semantically zero-filled). block/vdi knows only about
> VDI_IMAGE_BLOCK_FREE. Teach it about VDI_IMAGE_BLOCK_ZERO.
>
> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Thanks, applied to the block branch.
Kevin
WARNING: multiple messages have this Message-ID (diff)
From: Kevin Wolf <kwolf@redhat.com>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: qemu-trivial@nongnu.org, Stefan Weil <weil@mail.berlios.de>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] Teach block/vdi about "discarded" (no longer allocated) blocks
Date: Thu, 27 Oct 2011 10:53:42 +0200 [thread overview]
Message-ID: <4EA91C16.6050908@redhat.com> (raw)
In-Reply-To: <1319658678-18355-1-git-send-email-sunshine@sunshineco.com>
Am 26.10.2011 21:51, schrieb Eric Sunshine:
> An entry in the VDI block map will hold an offset to the actual block if
> the block is allocated, or one of two specially-interpreted values if
> not allocated. Using VirtualBox terminology, value VDI_IMAGE_BLOCK_FREE
> (0xffffffff) represents a never-allocated block (semantically arbitrary
> content). VDI_IMAGE_BLOCK_ZERO (0xfffffffe) represents a "discarded"
> block (semantically zero-filled). block/vdi knows only about
> VDI_IMAGE_BLOCK_FREE. Teach it about VDI_IMAGE_BLOCK_ZERO.
>
> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Thanks, applied to the block branch.
Kevin
next prev parent reply other threads:[~2011-10-27 8:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-26 19:51 [Qemu-trivial] [PATCH] Teach block/vdi about "discarded" (no longer allocated) blocks Eric Sunshine
2011-10-26 19:51 ` [Qemu-devel] " Eric Sunshine
2011-10-26 20:24 ` [Qemu-trivial] " Stefan Weil
2011-10-26 20:24 ` Stefan Weil
2011-10-26 20:54 ` [Qemu-trivial] " Eric Sunshine
2011-10-26 20:54 ` Eric Sunshine
2011-10-27 7:05 ` [Qemu-trivial] " Stefan Hajnoczi
2011-10-27 7:05 ` [Qemu-devel] " Stefan Hajnoczi
2011-10-27 8:53 ` Kevin Wolf [this message]
2011-10-27 8:53 ` [Qemu-devel] " Kevin Wolf
2011-10-27 16:12 ` [Qemu-trivial] " Stefan Weil
2011-10-27 16:12 ` Stefan Weil
2011-10-27 16:20 ` [Qemu-trivial] " Eric Sunshine
2011-10-27 16:20 ` Eric Sunshine
2011-10-28 8:00 ` [Qemu-trivial] " Kevin Wolf
2011-10-28 8:00 ` Kevin Wolf
2011-10-28 8:15 ` [Qemu-trivial] " Eric Sunshine
2011-10-28 8:15 ` Eric Sunshine
2011-10-28 9:22 ` [Qemu-trivial] " Kevin Wolf
2011-10-28 9:22 ` Kevin Wolf
2011-10-28 14:33 ` Stefan Weil
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