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Re: [PATCH 06/24] block: Mark bdrv_filter_or_cow_bs() and callers GRAPH_


From: Eric Blake
Subject: Re: [PATCH 06/24] block: Mark bdrv_filter_or_cow_bs() and callers GRAPH_RDLOCK
Date: Fri, 27 Oct 2023 15:33:25 -0500
User-agent: NeoMutt/20231023

On Fri, Oct 27, 2023 at 05:53:15PM +0200, Kevin Wolf wrote:
> This adds GRAPH_RDLOCK annotations to declare that callers of
> bdrv_filter_or_cow_bs() need to hold a reader lock for the graph because
> it calls bdrv_filter_or_cow_child(), which accesses bs->file/backing.
> 
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>  include/block/block_int-io.h |  3 ++-
>  block.c                      | 31 ++++++++++++++++++-------------
>  block/stream.c               |  4 ++++
>  blockdev.c                   |  2 +-
>  nbd/server.c                 |  6 ++++++
>  5 files changed, 31 insertions(+), 15 deletions(-)
>

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.
Virtualization:  qemu.org | libguestfs.org




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