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Re: [Xen-devel] [PATCH V3 0/3] xen-blkfront/xen-blkback trim support

On Wed, Aug 24, 2011 at 05:23:42PM +0800, Li Dongyang wrote:
> Dear list,
> this is the V3 of the trim support for xen-blkfront/blkback,
> thanks for all your reviews.
> and when I looked back at Owen's patch in Dec 2010,
> http://lists.xensource.com/archives/html/xen-devel/2010-12/msg00299.html
> this patch above also add the trim union to blkif_x86_{32|64}_request,
> and take care of trim request in blkif_get_x86{32|64}_req(),
> however, in the later versions, the part is just gone. I wonder if it is
> needed here? Thanks.

Are you referring to git commit 51de69523ffe1c17994dc2f260369f29dfdce71c
xen: Union the blkif_request request specific fields
    Prepare for extending the block device ring to allow request
    specific fields, by moving the request specific fields for
    reads, writes and barrier requests to a union member.

> Changelog V3:
>     rebased on linus's tree
>     enum backend types in blkif instead of flags in the interface header
>     more reasonable names in xenstore
>     move trim requesting handling to a separate function
>     do not re-enable interrupts unconditionally when handling response
>     set info->feature-trim only when we have all info needed for request queue
> Changelog V2:
>     rebased on Jeremy's tree
>     fixes according to Jan Beulich's comments
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> http://lists.xensource.com/xen-devel

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