Re: [PATCH v5 11/11] net/9p: allocate appropriate reduced message buffers

From: Dominique Martinet
Date: Tue Jul 12 2022 - 15:45:49 EST

Christian Schoenebeck wrote on Tue, Jul 12, 2022 at 04:31:36PM +0200:
> So far 'msize' was simply used for all 9p message types, which is far
> too much and slowed down performance tremendously with large values
> for user configurable 'msize' option.
> Let's stop this waste by using the new p9_msg_buf_size() function for
> allocating more appropriate, smaller buffers according to what is
> actually sent over the wire.
> Only exception: RDMA transport is currently excluded from this, as
> it would not cope with it. [1]
> Link: [1]
> Signed-off-by: Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx>
> ---
> Is the !strcmp(c->trans_mod->name, "rdma") check in this patch maybe a bit
> too hack-ish? Should there rather be transport API extension instead?

hmm yeah that doesn't feel great, let's add a flag to struct