linux-kernel - Re: linux-next: manual merge of the kvm tree with the vfs-brauner tree

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Date:   Wed, 22 Nov 2023 08:10:40 +0100
From:   Christoph Hellwig <hch@....de>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, KVM <kvm@...r.kernel.org>,
        Christian Brauner <brauner@...nel.org>,
        Christoph Hellwig <hch@....de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Sean Christopherson <seanjc@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: Re: linux-next: manual merge of the kvm tree with the vfs-brauner
 tree

On Wed, Nov 22, 2023 at 12:55:39PM +1100, Stephen Rothwell wrote:
> index 06142ff7f9ce,bf2965b01b35..000000000000
> --- a/include/linux/pagemap.h
> +++ b/include/linux/pagemap.h
> @@@ -203,9 -203,8 +203,10 @@@ enum mapping_flags 
>   	/* writeback related tags are not used */
>   	AS_NO_WRITEBACK_TAGS = 5,
>   	AS_LARGE_FOLIO_SUPPORT = 6,
> - 	AS_RELEASE_ALWAYS,	/* Call ->release_folio(), even if no private data */
> + 	AS_RELEASE_ALWAYS = 7,	/* Call ->release_folio(), even if no private data */
> + 	AS_UNMOVABLE	= 8,	/* The mapping cannot be moved, ever */
>  +	AS_STABLE_WRITES,	/* must wait for writeback before modifying
>  +				   folio contents */
>   };

Note that AS_STABLE_WRITES, is a fix for 6.7, so this will probably
end up getting reordered.  It might also be worth to remove all the
explicit number assignments here to make the merge conflict resolution
a bit easier in the future.