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Re: [Qemu-devel] [Qemu-block] [PATCH for-2.11 2/2] block: Don't request

From: Alberto Garcia
Subject: Re: [Qemu-devel] [Qemu-block] [PATCH for-2.11 2/2] block: Don't request I/O permission with BDRV_O_NO_IO
Date: Mon, 20 Nov 2017 15:41:59 +0100
User-agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu)

On Mon 20 Nov 2017 03:11:41 PM CET, Kevin Wolf wrote:
> 'qemu-img info' makes sense even when BLK_PERM_CONSISTENT_READ cannot be
> granted because of a block job in a running qemu process. It already
> sets BDRV_O_NO_IO to indicate that it doesn't access the guest visible
> data at all.
> Check the BDRV_O_NO_IO flags in blk_new_open(), so that I/O related
> permissions are not unnecessarily requested and 'qemu-img info' can work
> even if BLK_PERM_CONSISTENT_READ cannot be granted.
> Signed-off-by: Kevin Wolf <address@hidden>

Reviewed-by: Alberto Garcia <address@hidden>


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