Re: [RFC PATCH 00/31] netfs: [WIP] Allow the use of MSG_SPLICE_PAGES and use netmem allocator

[Enzo Matsumiya]

On 08/08, David Howells wrote:
> Hi Enzo,
>
> > >     (d) Compression should be a matter of vmap()'ing these pages to form
> > >     	 the source buffer, allocating a second buffer of pages to form a
> > >     	 dest buffer, also in a bvecq, vmapping that and then doing the
> > >     	 compression.  The first buffer can then just be replaced by the
> > >     	 second.
> >
> > OTOH, compression can't be in-place because SMB2 says that if
> > compression fails, the original uncompressed request must be sent (i.e.
> > src must be left untouched until smb_compress() finishes).
>
> I've got a change which should achieve this, but it seems I can't test it.
> None of ksmbd, samba and azure seem to support it:-/

Yes, Windows 11 or Windows Server 2022+ only.

Compression for ksmbd and samba have been on my TODO list for too long,
I should get back to it :/

Anyway, if you want me to test, just send me the patches.
I have your linux-fs remote as well, if that's easier.


Cheers,

Enzo